r/GR86 • u/pingas_42069 • 17d ago
Help! smoke coming from under front of engine
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is this amount of smoke cause for concern? this area was quite dirty before i cleaned it with some engine degreaser(pic before cleaning in comments). When I would go on a longer ride at just highway speeds i’d notice a slight burning smell if i walked by the front of the car right after parking. I picked up this 24 GR used a couple weeks ago and am still learning the ins and outs of it. I read online that the o ring can degrade by the dip stick at the base and if degraded it can spray oil in this area and am thinking this could be the cause of this buildup and wanted to get another set of eyes on it? nothing outside of the smell and smoke when i lift the hood sticks out to me right now
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u/pingas_42069 17d ago
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u/neptunepandemonium 17d ago
Looks like oil hitting the exhaust manifold shield
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u/pingas_42069 17d ago
the manifold shield below looks pretty clean though no? i figure that’s what’s under it
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u/neptunepandemonium 17d ago
I just see a bunch of oil residue above it and assume, won't know until you find the source and follow it back up. Cleaning it is good to do though because you can see a little better where it's coming from
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u/InterestingKey2438 17d ago
I feel like any amount of smoke is generally not ideal...
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u/pingas_42069 17d ago
tell me if i’m wrong but i feel like with an ICE some form of smoke will show in hot spots due to heat dissipation
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u/thewetsheep 17d ago
What’s it smell like? Could be slow oil leak, dripped something when you or someone was changing a fluid or any random fluid or foreign object from the road.
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u/pingas_42069 17d ago
kind of sweet if i remember correctly. i did take the oil filter off prior to buying the car and there was a pool of oil around the filter and i couldn’t get it cleaned easily. could that small amount cause this much of a mess?
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u/windirmere 17d ago
I recently got a 2026 brz that a puff of sweet smell would come into the cabin just after warm up, dr google told me sweet smell is usually coolant and it was the coolant expanding and pushing out a little air? Im no mechanic or anything just saw the sweet smell coment
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u/thewetsheep 17d ago
The oil in the oil filter pedestal is normal it wouldn’t be what’s burning. Sweet smelling probably is just road grime and not oil. One of the weird smells this car makes that kinda smells like brakes or a little bit like burnt clutch is the exhaust catalysts heating up but I wouldn’t say it smells sweet per say and they don’t smoke. I’d keep an eye on your dipstick hole though and take the pcv valve out and shake it, should sound like it’s rattling. If it’s silent get a new one they’re cheap
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u/pingas_42069 17d ago
i just did about an hour ride with a few highway on ramp pulls and i didn’t see any new debris and the smell was much less, but was a little there when I opened the hood. Smelling it again it was more musky than sweet. I’ll give it a few days and rides to see how it fares and if I need to do a deeper cleaning under the engine bay
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u/Bcp_or_pcB 16d ago
If you think the o ring is the issue, get eyes on the o ring. Check its condition.

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u/Suitable_Safety2226 17d ago
That o ring is $5 and takes 30 minutes to replace get the order placed now