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Originally Posted by i3litzace
I am having similar problems with my s14 sr20det. Keep me posted i want to know how this gets resolved. The only difference is that i would get back-fire through the exhaust when i upshift.
when i checked the factory service manual it said to check spark plugs first then check the heated O2 sensor and canister purge whatever that is. last step is to check for air intake leaks. i just got my spark plugs and while i go in there im going to check my coil packs for problems and check for leaks and the type of fouling im getting.
If the spark plugs and coil packs are good then im going to check my injectors and o rings for leaks...
If anyone has had similar problems or solutions let me know
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I get backfire when I drive around too. I've spit hardcore flames before just granny shifting and on rare occasions sounds like a weak gunshot. It has happened to me at night before and I see a flash of light behind me which basically told me that the car is running rich.
My guess is spark plugs are fucked, weak spark = late ignition which could shoot not fully burnt fuel out of the motor which could cause the flames. Gonna stick some ngk iridiums in there when I get the chance. I haven't driven the car much but in all honesty my best guess would be a combination of BOV and fouled plugs. BOV not fully closed pre-boost (which makes sense since when I mash on it at like 2100 and hit 2-3psi it stops hesitating) and the spark plugs causing the hesitation once I hit WOT/full boost (haven't done it much after it started happening).