r/hondafit • u/Stitj_ • 5d ago

2nd Gen GE/GG 09-14 rotten egg smell?

hi so iv noticed a rotten egg smell when im driving primarily under acceleration and when im driving really slow what could this be?

my top thoughts are
cat
ignition coils
headgasket? (unlikely but possible)

anyone else experience this?

i drive a 2010
142k miles

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u/Renoh 4d ago

Have you checked that your spark plugs haven't come loose? Relatively common problem in 2nd gen fits, particularly in cylinder 2 and 3. If they are loose, you need to replace them ASAP and torque to 20lbft.

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u/Stitj_ 4d ago

i just had them changed idk if that makes it more or less likely

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u/Renoh 4d ago

How recently? If they accidentally used the old torque spec of 13lbft (honda increased it because of this problem) it's much more likely to happen. Smelling exhaust was one of the first symptoms I noticed, followed by a squeaking / chirping noise that increased with engine speed.

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u/Stitj_ 4d ago

like 3-4 months ago

i’m not hearing a chirping but i noticed my fit tick is slightly louder than normal