Coolant Smell No Visible Leak

To keep coolant from boiling, the cooling system has to be pressurized. If there is no visible leak, then check the engine oil and the transmission oil and see if the oil is black in color or like a milkshake. Jim Grant's Tech Tips. Sometimes you will see dried coolant in this area which could explain the smell you are experiencing. After a few minutes the smell is gone. EGR cooler inspection for coolant loss: If a 6. Can that all be from the overflow reservoir? and if i just leave my car in park/neutral and press the gas will that create smoke; if there is smoke coming out of the muffler? and as far as i know, no sweet smell, but ill check when i drive next time. I thought the water pump was weeping from the vent hole but no evidence of any seepage. looked at other threads about coolant leaks and most of the answers people have been getting is the intake leaking. If there is a smell but you can't find the leak, then it's "most likely" the heater inside the car with a very small leak that will dry before it hits the ground. Hmm, so why is the overflow reservoir still full? Because after removing the battery, I could see the hose behind it running from the reservoir to the radiator was kinked shut from the factory. Where are the typical engine coolant leaks? This is a discussion on Where are the typical engine coolant leaks? within the Maverick Discussions forums, part of the Can-Am Maverick Forums category; Took the machine today for a 70 mile trip. 5L 24 valve engine, and I’m getting a strong coolant smell after short drives [from engine area] losing about a 1/4 inch to 1/2 inch coolant per week. I was a Nissan Tech for many years and I know an antifreeze leak when I smell it. this may not be initially noticed as it will soak into the carpet and the underlying padding. When the car is cool there are no leaks cause there is no pressure You may have a small leak in one of the hoses so it will only leak out when the cooling system is under pressure. If you windshield is all foggy and hard to clear and the right passenger floorboard is wet then your heater core is leaking. long life coolant only sold in pre mixed. There is a small trace amount of coolant/water milkshake on the underside of the oil fill cap, but we don't know if it is a remnant of getting a leaky oil cooler fixed recently. But today when a friend of my dad's (who's been working as a mechanic for several years) stood by my car he said that it smells like it's leaking coolant. Thanks for advice. Low coolant, but no visible leak or overheat? 7 Series - E38 (1995 - 2001) does it smell sweet. Heater core, right? Well, I could not find a leak anywhere. It not inside the car (i sussed that out first) only outside the car there is no leaks that i can see from any of the hoses. Normally you should NOT smell coolant at all. this may not be initially noticed as it will soak into the carpet and the underlying padding. There are no visible leaks anywhere and the coolant bottle is still at the Full line, but it does make me feel uneasy. Well come Friday all I can smell is coolant again - very strong smell from the front of the truck and if the heat is turned on it is noticeable. I smell coolant but see no visible leak in 2003 nissan frontier. drove it again todaysmell is very strongturned off the heating and it went away i can smell it w/ the hood down in the front of the car, so its something up thereopened the hood w/ no visible sign of a leaki have 386 miles and will wait until i hit 500 and take it in for the oil change and have it checked out. Found today - coolant at min level in reservoir. No visable leaks. No puddles and no visible leaks in the engine compartment or anywhere else. The coolant smell has continued but there has been no more smoke or visible drips of coolant. Took car to dealer, they said "pressure test system, everything good, no visible sign of leaks, vapors escaping from overfill tank are normal. Whatever it is, it only does it when it is hot. I have a 1992 Corolla 1. Smiled burn't water smell when I got home checked level and it was the same 1 1/2 inch below full. It's not overheating, and once it sits and cools down a bit, the smell goes away. So if the pressure tester can’t hold pressure AND you see no visible external coolant leak, you might have a head gasket issue internally. Check your coolant line from your turbo, you should be able to see the return from the bottom of the vehicle. I had to refill the coolant pretty often but there was no visible leak. looks for signs of dried coolant. Coolant can only enter the crankcase if the seal on the water pump fails. Hey guys I am losing coolant very slowly, and I can smell coolant from under my hood. My truck started using coolant last winter (about 85,000 km), no visible leaks of any sort, and the dealer diagnosed a leaking EGR cooler. long life coolant only sold in pre mixed. When the engine is warm I can smell a sort of hot/burning coolant. it would run down the font of the engine but not puddle under the car. 6 4afe engine with over 208,000 miles. Ignition switch, starter, and accelerator: condition A. I'm thinking it might be the windshield washer fluidit is right there by the driver and probably gets warmed up by the engine enough to vaporize some. She has driven it around and left it running for 45 minutes with no visible leak or coolant smell. Might also be coolant soaked foam in the heater box. Bumping an old thread, my buddies 03 Dodge Caravan van is leaking coolant and when I got there it was dry. Heater core, right? Well, I could not find a leak anywhere. Fill up the res to the max line and monitor over the next several weeks with the cap back on. Be attentive to your oil level. If the oil looks normal, do the test in the radiator cap, not the reservoir following the directions on the kit info. But no leak from what I can find. Coolant Leak. My car is a 2006 Pontiac G6 GTP 3. whenever i stop i can smell the sweet smell of coolant and if i go for a long drive it will steam from the passenger side on top of the engine by the intake manifold. Eventually the radiator and the. The weird thing is is that there is no exhaust smoke, no sign of coolant in the oil, or vice-versa, she runs fine, no smoking from under the hood (I assume no coolant hitting something hot and evaporating for this reason) and no visible dripping onto the ground of coolant. The windshield is not getting greasy no matter how much I run the defroster. Watch this free video to see how to fix minor coolant (antifreeze) leaks in a 2008 Chrysler Town and Country Touring 3. The car doesn't overheat until the coolant is low, so that pretty much rules out a thermostat. You might be getting the coolant smell because a hose (pinhole?) or even the lower intake manifold gasket/s could be just starting to go. But there were no visible leaks and the level never changed. Can smell antifreeze but no leaks visible no heat? If your going through coolant then you have an internal head gasket leak you smell coolant because its getting into cylinder and burning. Just the sweet smell of coolant. It continues to leak even if the car is off. Couldn't see anything at all. the area around the top pulley- that is the pulley attached to the water pump. Worse, allowing the problem to go on often results in a new engine. This compressor is located outdoors on AC split-systems and inside wall-mounted residential units. So, if the pressure is good and the head gasket appears not to be the problem, where is the coolant going?. I filled the coolant and a few days later checked and the level and it was not down by much but still the coolant smell. If i drive for about 75 miles or so the coolant is way low. I have always kept water or a 50/50 mix of antifreeze and water in my cars. Jan 03, 2018 · DETROIT — Ford says it will repair any coolant leaks that might be found in more than 200,000 recalled vehicles that are at risk of catching fire. Just had water pump replaced and mechanic pressure tested it and checked all hoses. Doesn't overheat stays around 196 degrees. It pushed anti-freeze into the bottle like it should. No steam, so it's not hitting anything hot along the way like the exhaust or turbo. When the heater core develops a leak, it begins circulating air with an antifreeze odor and eventually fails altogether. By the time the leak made any evidence on the pavement, it poured out. Water also fills the front passenger foot area during bad rainstorms. I took some pics though. King Dj-Slim 13,515 views. Run the truck to temp and then SLOWLY take the degas cap off. It seems like it is using alot of coolant. I have had the radiator replaced, the radiator cap twice and thermostat twice. When your radiator is full, start the engine and let it get all the way up to "normal" temp. Freon gas leaks can ocurr at the outdoor compressor or indoors as the Freonliquid is pumped into the AC unit. There is NO coolant in the oil, no white smoke coming from the exhaust. no coolant smell. When the heater core develops a leak, it begins circulating air with an antifreeze odor and eventually fails altogether. I had a leak from one of my hoses which recently got fixed. If you feel hot air still pumping inside the vehicle, then chances are that your coolant system is about to fail. hey guys i have a 2001 f150 xlt with the 5. The car doesn't overheat until the coolant is low, so that pretty much rules out a thermostat. Remove the Exhaust Pressure sensor and tube from the EGR cat converter (EGR-OC) pipe. It has 106,000 km (65,000 miles). The smell can be smelt from inside and outside the car. I would appreciate any hints. Cost to repair*:. I was a Nissan Tech for many years and I know an antifreeze leak when I smell it. that is alot of coolant for no visible leak. Maybe someone else can use this info. If the car is hot, a small leak will evaporate before it hits the ground. I can't find the leak. You might also look at your freeze plugs. Losing coolant regularly, but not leaking? Last oil change at 107K did not look milky or smell of coolant. The car does however, have a distinct coolant smell inside the car when I drive. I work at a radiator shop and found that toyota pink coolant used on tacomas is water like and thin and the smell commonly comes from the overflow reservoir. Every time I would park in the garage and get out I would smell coolant. Smelling Coolant and Overheating With No Visible Leaks Problem Description The 1997-2014 Ford Expedition is known for displaying the normal symptoms of a coolant leak, including overheating, especially when the vehicle is idling, the strong smell of coolant from the engine, and illumination of the low engine coolant warning light. I have a 2005 silverado 1/2 ton crew cab z71 with a 5. 1L and Allison trans. They replaced the motor and it still leaked. Basically there is a coolant overflow spout and if you are traveling up and down step hills and bouncing around the coolant will leak out of the overflow. It must have done something to it because as soon as I put my antifreeze in it goes down to about the 1 inch level you were talking about, but I can see no visible leaks. Re: simple fix 6. what motor? and do you smell coolant inside? check for wet floor in case heater core leaking, and look around hoses for crusty areas. The car is not overheating at all, just drove it for a 3 hour straight drive, no problems. I only drive about 100km per week. I have a 96 chrysler concord 3. 5400 miles since leaving the Volvo shop, I have already added 2. temperature knobs turned to cold). My 84 D-100 needs a core. Just the sweet smell of coolant. Sometimes you will see dried coolant in this area which could explain the smell you are experiencing. It held pressure okay. I have gotten a faint coolant smell in the cabin and around the front end of the car 2-3 times in my two years of ownership, generally after coming in from a long-ish 1-2 hour drive. Losing coolant, but no leak Blazer Car Forums The leak may be just enough to get your smell, but is burning off before you see drips on the ground. I work at a radiator shop and found that toyota pink coolant used on tacomas is water like and thin and the smell commonly comes from the overflow reservoir. Usually the head gasket failure is a symptom of severe overheating, not the cause. will have a sweet smell to it. Could be intake manifold leak too. As long as there is coolant in the reservoir and in the radiator and no visible leaks, no problem. It works by drawing heat out the antifreeze/water mixture and then siphoning it through the cabin. Is there a recall/campaign on this. If engine coolant leaks, boils, or if the cooling system needs to be drained and refilled, the antifreeze's freeze protection will need to be considered. Interesting thread as I too have an "invisible" coolant leak. I have needed to add a quart or more of coolant every week for the past month. Since then the water's been leaking out faster and faster. So, my only problem with the car is the smell of coolant when I open the hood. Please let me know if there are other places to look when no visible oil or leaks around the engine area. Here are the symptoms: Coolant reservoir goes from full line to none visible over a period of 4 days small amount of steam coming from front vents when parked No puddles in the garage or drive where it sits at night/work no visible dripping from pipes or radiator. Best Answer: Most likely you have a small leak in the heater core, and the smell of coolant is coming from there. I sat beside them smelling it and they claimed it wasn't there. Losing coolant, but no leak Blazer Car Forums The leak may be just enough to get your smell, but is burning off before you see drips on the ground. Smiled burn't water smell when I got home checked level and it was the same 1 1/2 inch below full. No loss in coolant, always in the middle of the two lines on the expansion tank (when cool), never runs hot. 93 Dodge Intrepid, Coolant Leak Q: Hi Jim, I have a ‘93 Dodge Intrepid with a 3. Today I noticed a few drops of coolant on the ground under my car. Antifreeze smell after driving | Toyota Nation Forum. I sat beside them smelling it and they claimed it wasn’t there. (1 and 5 in the image) Bought both hoses and no more leak, at least til the valley pan leaked later. I have been underneath it, pulled the airbox, looked at everything that could leak and see no evidence anywhere of coolant leaking. I hope it is just the cold weather. Usually the head gasket failure is a symptom of severe overheating, not the cause. I'm going to check the coolant tank and oil level when the truck cools down a bit more. - Answered by a verified Ford Mechanic. If your leak is minor (can smell coolant when running bunk heat, but are not losing a significant amount of coolant) you may just be able to tighten the bolt on the hose flange on the bunk heater core, the o-rings can shrink and start to leak small amount onto the heater core. Been checking coolant level regularly and it's not losing any. There are no visible leaks in the engine bay or on the ground. The exhaust has no white steam or smell either. Last September 7600 units were recalled due to a cup plug within the cylinder head that could become dislodged, causing coolant to leak and possibly catch on fire. I need to refill the coolant container every 30 miles or so because the light for "add coolant" goes on. The symptom. Note this is only for Phase 2 engines, and some 1999 models have the Phase 1 engine and are NOT covered by this bulletin. If the pressure on the gauge drops at all, look for. The contact stated that coolant was leaking out of the vehicle. The symptom: Persistent coolant loss may be the only outward symptom. I also replaced the green coolant that the previous owner's mechanics used and replaced it with OAT. No puddles and no visible leaks in the engine compartment or anywhere else. The car is not overheating at all, just drove it for a 3 hour straight drive, no problems. Leakage from the secondary weep passage may give false indications that core plug(s) may be leaking on the back side of the engine. are visible in the. often you can spot a seep like this by the accumulation of discolored dry coolant at the leak point. Even though I smelled it when I dropped off the car. The contact stated that coolant was leaking out of the vehicle. The temp does not get above normal. Lost about 4 gallons in 300 miles. I then bought a new cap for the coolant tank and then my problems stopped. i cannot see any visible leaks anywhere. It has 106,000 km (65,000 miles). I got it for $10,500 in Seattle area. I am very, very, very sure it is NOT leaking coolant when the AC is not used. Battery and cables: condition, secure, load test, free of corrosion. HELP!! 1998 GMC Sierra keeps losing coolant and running hot. There's no visible leak. The leak could be just about anywhere, but the hose ends are a good spot for to to happen. There are NO ODORS or visible leaks at all, at anytime anywhere on the bike!. Coolant Leak. and like I said, pressure tests totally normal. Convoluted hose is chaffed major league. I don't see any visible wet areas under the hood. No steam, so it's not hitting anything hot along the way like the exhaust or turbo. I checked all visible hose clamps and no sign of leakage. It doesn't appear to leak when it's not running. I have 11000 miles on mine and since it's gotten really cold lately, there seems to be a strong smell of coolant every time I get out of the car. Automatic transmissions in certain 2005-2010 Nissan SUVs and Trucks are under attack from their radiators. No visible leaking, no drop or change in pressure. On Thanksgiving day I took out the machine for the trip to my family's house for dinner. Designed as a heat exchanger, your vehicle's radiator uses a liquid-based coolant in the fluid to air cooling process. Often, a small crack or leak in the top plastic tank will allow a little bit of coolant to seep out, but it evaporates before it can drip down the entire length of the cooling tubes. Even though I smelled it when I dropped off the car. - No water in. Had it pressure tested and just recently had it tested for a head gasket leak, but mechanic said there was no issue. The sweet smell of leaking coolant I discovered the smell of coolant tonight after coming back from the store. temp according to guage when warmed up. It doesnt overheat or anything like that either. there are small puddles of green antifreeze puddled on top of the manifold and in small crevasses. Well, that did not help and i continue to top the coolant once in a while. Can't see any gas, no drips, and I'm not getting a check engine light. So there is 1) smell and 2) no visible leak. I took my car to the dealership about 3 weeks ago and they did a pressure test and claimed there was no leak in that they couldn't smell it either. It pushed anti-freeze into the bottle like it should. There are know leaks visible in the engine bay or on the ground. This is usually due to a blown head gasket, leaking coolant into the cylinder. It has 106,000 km (65,000 miles). But where in the world is it coming from?. Be Carefull for hot areas though. Smell coolant but no leak. If it was the upper intake leaking you would have vacuum issues and no smell of coolant as coolant doesn't pass through it. No check engine light, AC works great, NO smell through vents and no leaks under car. The smell is most strongest at the. There was never any leak. BOTH where the radiator hose worm gear clamps, simply retightened and all was good. drove it again todaysmell is very strongturned off the heating and it went away i can smell it w/ the hood down in the front of the car, so its something up thereopened the hood w/ no visible sign of a leaki have 386 miles and will wait until i hit 500 and take it in for the oil change and have it checked out. 0 powerstroke diesel smell for months then a visible leak My 06 has 205,000 and started recently burning coolant badly. But there were no visible leaks and the level never changed. I took apart the center console and got to the heater core, but to my surprise, I didn't find any visible leaks there, nor any traces of spilled or dripping coolant. It's not leaving spots, there's no smoke, and the heater works fine, blows very hot. It's a pretty steady leak. Slow coolant loss with no signs on the engine can also be a slowly leaking heater core. I put a gallon of the Motorcraft Orange coolant in 2 weeks ago to fill the reservoir back to the line. However, there are no visible leaks. I have been living with this invisible leak (coolant smell when engine hot but no visible coolant leaking) for a long while and was just think of putting RadWeld in a couple of weeks ago as now I can see steam coming from the grill on a cold day when the car stopped. If you notice a puddle that is a light color and has a sweet smell, then you likely have a coolant leak. I was getting a antifreeze smell, looked through the whole system and no leaks. Losing Antifreeze With No Apparent Leak by Chris Stevenson Whenever a vehicle loses antifreeze, also known as coolant, the usual expectation leads the owner to check for evidence of leaks at all the coolant connections and components. Hi, I have a 2012 pro star and I am loosing a gallon of coolant a day. It continues to leak even if the car is off. I have been underneath it, pulled the airbox, looked at everything that could leak and see no evidence anywhere of coolant leaking. Yet there are no leaks, no holes in the radiator, no head gasket issues (specific dye in water). Inadequate cooling capacity: This condition can be the result of misapplication of one or. After a few minutes the smell is gone. I have always kept water or a 50/50 mix of antifreeze and water in my cars. Oil that is old and in need of replacing can also cause leaks. Oct 31 2012, 9:41pm Hi everyone I've got a question about my truck, I recently started smelling coolant outside my truck (very strong odor of it) and I can't seem to find any leaks, I've put rags down under it and no wet spots. Check your oil to see if there's any coolant traces in there, and if not well the only other choice is the combustion chamber meaning yes a bad head gasket. Nothing else happen, no visible leaks or anything. If engine coolant leaks, boils, or if the cooling system needs to be drained and refilled, the antifreeze's freeze protection will need to be considered. I have had the radiator replaced, the radiator cap twice and thermostat twice. I was sure it was the heater core since there seemed to be nothing else it could be. Or, you can look at the coolant connections with the engine hot and running, preferabley by revving it in neutral. I have looked all over the motor and cannot see even a wet spot. If you feel hot air still pumping inside the vehicle, then chances are that your coolant system is about to fail. hey guys i have a 2001 f150 xlt with the 5. But where in the world is it coming from?. When we turn on the air it continues to smell strongly of coolant. It's a pretty steady leak. Im stumped. The reservior drops a couple inches every week, and there is always some steam coming out of the exhuast. looked at other threads about coolant leaks and most of the answers people have been getting is the intake leaking. This compressor is located outdoors on AC split-systems and inside wall-mounted residential units. The next step for me is a dye test but to be honest it is not worth my time, yet. If there absolutely no visible sign of an external leak (even with a pressure tester like gp06gto mentioned), then the only other place it could go is into the combustion chamber or oil. the area around the top pulley- that is the pulley attached to the water pump. Beneath the water pump, there is a small hole, less than 1mm in diameter. It's been pressure checked hot and cold,no leaks to be found. Said to keep an eye on it for a week or two to see how slow or fast the coolant is disappearing. Convoluted hose is chaffed major league. No smell in the engine compartment. The oil looks fine and I don't smell anything inside the cab. A year ago I sealed an external leak where the heater core mated up to the in an out lines. If you have read my sig, you will see a few of the problems I am dealing with at the moment, and yes, I'm sure my foot contributed to a few. I took apart the center console and got to the heater core, but to my surprise, I didn't find any visible leaks there, nor any traces of spilled or dripping coolant. After the truck is warmed up I can smell antifreeze in the front of the truck. I have checked all hoses and clamps, thermostat, water pump, freeze plugs, and the radiator has no leaks. Or does your. Vehicle is free of odor or scents to mask odor no visible leaks/damage Radiator, cap and cooling fan operation, no visible damage Coolant recovery tank. I decided to have an EGR delete and added a chip to turn off the check engine light. Nothing on the garage floor, no visible leaks around radiator, overflow, coolant lines, etc. Coolant smell. Depending on your particular model, though, the water pump may be out of sight under a cover. Its possible its leaking slowly- where it evaporates with the hot engine block- but never leaks enough to drip on floor. But where in the world is it coming from?. Check the coolant hoses and heater hoses for any leaks. Or, you can look at the coolant connections with the engine hot and running, preferabley by revving it in neutral. The coolant will eventually run out the back side of the engine. Can smell antifreeze but no leaks visible no heat? If your going through coolant then you have an internal head gasket leak you smell coolant because its getting into cylinder and burning. Any sign of leak such as visible coolant leak, low coolant levels, or rusting of the radiator, should not be neglected. My water pump has only 20k miles on it so hopefully it's not bad already, but I didn't see anything coming out of the weep hole. After, being the rad. Coolant smell everytime but. 0 powerstroke diesel smell for months then a visible leak My 06 has 205,000 and started recently burning coolant badly. They said they saw no evidence of coolant leaking in the obvious places, and filled it back up to full for me. and like I said, pressure tests totally normal. losing coolant. I had no overheating, or any problems with the engine for that matterjust the occasional burning smell. Added coolant, heat came back on & the car made it 20 miles back to the house without overheating. Normally you should NOT smell coolant at all. It's a pain to remove this pan (use ramps), but you need to bite the bullet and have a look under theresooner rather than later. Watch this free video to see how to fix minor coolant (antifreeze) leaks in a 2008 Chrysler Town and Country Touring 3. Slow coolant loss with no signs on the engine can also be a slowly leaking heater core. I've been having a persistent loss of small amount of coolant (like 2 ounces every 1,000 miles) visible from a gradually dropping coolant level in the radiator. Can smell antifreeze but no leaks visible no heat? If your going through coolant then you have an internal head gasket leak you smell coolant because its getting into cylinder and burning. This may sound a bit weird, but I had the same issue and it ended up being a leaking battery. No visible leaks or indication of a leak. The next step for me is a dye test but to be honest it is not worth my time, yet. i cannot see any visible leaks anywhere. Low Coolant May Not Always Indicate a Leak in Your Radiator How to Test Antifreeze Chrome Data makes no guarantee or warranty, either expressed or implied. my oil was changed last week and the old oil was fine so it isnt the gasket. - Hoses are in good shape. Coolant has a tendency to have a sweet smell to it. The challenge is locating the part of the car in which the leak is located. The coolant level never dropped and my engine temp was normal. So your car only leaks going down the road. I smell it at the drivers door when, I shut off the car and get out. Losing coolant, no visible leaks, over heating. I drove it for about 30 minutes, stopped it, and no leak. I have been all around the motor with a light, nothing. Can the radiator have a slight crack and be leaking? I'm stumped. So I took my new to me 2000 LC (104k miles) to the dealer for a coolant leak. Found today - coolant at min level in reservoir. I have a 2005 silverado 1/2 ton crew cab z71 with a 5. Have the cooling system pressure tested, to be sure, but I would say that your problem is the heater core. 0 came into the shop with a complaint of a coolant leak. The oil is fine no foam. Summer is here in full force! As the temperatures continue to rise, you’ll likely be staying indoors to keep cool. I thought maybe a hose collapsing once in awhile? Dexcool does not have a smell like normal green. 3 but no visible leak until after pressure test it showed at upper hose or External Coolant Leak. Nothing on the garage floor, no visible leaks around radiator, overflow, coolant lines, etc. Low coolant in chevy truck 5. My 84 D-100 needs a core. Don't hesitate and get this done. Could be intake manifold leak too. You're starting to see lots of customers complain about problems and symptoms stemming from a low coolant situation. coolant by: Anonymous could be a freeze plug. So, my only problem with the car is the smell of coolant when I open the hood. Had similar symptoms on my B4 (now Abacus') before pulling the dash and replacing it a few years back. It held pressure okay. This is usually due to a blown head gasket, leaking coolant into the cylinder. There is no coolant in my oil, my truck is not overheating, and no visible leaks on hoses or seals. Under constant pressure it developed into a nice stream. It not inside the car (i sussed that out first) only outside the car there is no leaks that i can see from any of the hoses. Why Does Your Car Need Antifreeze? Antifreeze is a chemical that lowers the freezing point of water. 3 but no visible leak until after pressure test it showed at upper hose or External Coolant Leak. the only place that even looks like it could be from is the 2 hoses going to the oil cooler,ther is crystalisation on them both but no water leakes visible. My sunroof leaks during bad rainstorms. then inspect the the engine bay with a black light.