Today I noticed that when I start my SK I see water with black stains in floor where the end of exhaust is. Is there something I should clean inside, its just water from humidity? but what about the black stain? is just dirt?
nothing to worry about, condensation will build up in your exhaust when it cools down and exit the exhaust when it warms up. this is what causes most muffler's to rust from the inside out. The black stain is the water mixing with the carbon stains in your exaust pipe.
Well I am just saying its a possible sign, it's probably ok but depending on the motor the carb may need to be re jetted or if EFI the O2 sensor might be shot.
Yes, I actually reading about it right now and says exactly about the O2S. At least the check engine light is still Off, but when cold the exhaust smell is sort of strong and the water with stains in floor. RPMs are about 1500 and later start to normalize. Dont know yet if when engine is hot keeps doing it. I recently bought it; a 95 Sidekick (japan made) 1.6 - 8valve and still in replacing old things and stuffs.
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water in floor thru exhaust
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