P0301 CEL question?

[b_h_87]

I got a CEL and went to a shop and they got the code P0301 which i found out is cylinder 1 misfire....but i have questions?

1. How do i know if a sparkplug is defected?

2. Does a boost controller have anything to do w/ a cylinder misfire?

thanks

[Legacy05]

Not sure about the boost controller, but when I got that code it meant my fuel injector was going bad ... you could have them switch 1 and 2 around to see if you throw a P0302 code ... if you car is idling rough, more than likely your injector has gone to ish! I have had 3 go bad.

[scoobydrew]

Easiest start is: get rid of the BC, then swap coil packs and wait for it to come back. If the same cyl. shows, you know it's not the coil. Then swap injectors.

[b_h_87]

Well i could get rid of the BC ...but its an EBC...so its not even on?...so should that still matter than?...and also is checking/replacing an fuel injector a garage prjoect? or is it to complicated for it?

[Opie]

Cylinder misfire codes can be caused by a mulitude of things, plug, coil, injector, bad ring land, bad valve spring, timing off, etc.

 

Boost controllers can cause bad ring lands (overboosted)....take it off...then start simple, swap coils if code returns on the same cylinder swap plugs and so on until you isolate the problem.

[friviz68]

i had the same cod po 301 had 2 bad injectors the dealership put all new ones in. runs good but now lots of black smoke. due to bad turbo said the dealership.