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evo IV big misfire and sputtle.

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Old Mar 25, 2016, 10:21 AM
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evo IV big misfire and sputtle.
All starts then gas tank vent was stuck, at cold start sputtlering and heavy misfire then driving low rpms then engine get warm the problem was smaller. For now i haved changed the spark plugs and fixsed gas tank vent, yesterday was big big bang at 2nd gear WOT and engine dead, restart it and runs only high rpms, drived rough 30km to home and now its no difference of cold or warm.


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Old Apr 2, 2016, 01:38 AM
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For now i have changed temp sensor, MAF, cleaned throttle body/CPS/CAS, changed ignitions coils, elminated BOV for bypass. need HELP.
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Old Apr 4, 2016, 11:36 PM
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Changed the iac now and at cold start it idle at 2000krpm and sputtle at driving, WOT over 1bar is rough.
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