Hey guys i know i'm very new, but i've been browsing for the last few years anf now i need some advise. here is a link to another thread i've started if you want to see it from the beginning..
http://forum.efilive.com/showthread....sfire-problems

the lowdown is that i'm having a misfire code p0300 (random misfire) when i'm driving with throttle position 50% or greater it flashes the light at me. i have almost no power and i can barely reach 4000 rpm. through scanning i find cylinder 4 and 6 to be the culprits

so far i have new plugs, wires, fuel filter, switched coil packs around and replaced my intake gasket. still the same misfire on 4 and 6.

i just did a compression test and came up with
#2-165 PSI
#4-150 PSI
#6-155 PSI
#8-170 PSI

#1-170 PSI
#3-165 PSI
#5-175 PSI
#7-130 PSI <--i rechecked this one a few times and it really is 130 psi

tomorrow i'm going to switch around the fuel injectors to see if the problems follows..i'm really running out of things to check anyone have any input? Thanks!

 

I read your EFI link;the left bank cat was the problem?

 

I was about to mention, usually when you have random multiple misfires and the engine won't rev above 4k a cat is clogged...

 

Thanks;how do you like your new transmission?

 

I love the trans, still getting used to how hard the lockup in the converter is...if I had a new belt on there that wasn't squealing every time it goes into lockup I'm sure that I'd like it more...just moved so I haven't really had any time or money to mess with it, plus, Justin is still ironing out a few things with the tune, and I'd like to rework the exhaust as soon as some spare scratch becomes available...thanks for asking

 

Sounds good.