Originally posted by Raf99
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Plugs are perfectly fine. Good lord. Why does the fuel pressure shoot up 2.5 psi a half second after sputtering(misfire) happens. Answer that if you can. Video i will try maybe later to take and upload. It isn't going to be a eureka moment or anything.
I really need to answer if the misfire is coming from injector side or spark. So am going to do that somehow. The misfire is at certain conditions so not sure how i am going to test injector side but testing spark side is easy enough.
Would also be helpful in knowing the cycles the ecm goes thru when engine is cold and hot.
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