s2kNORcali

Last week I pumped gas at shell. Most of the time I go to Chevorns. A days later my CEL popped up (P01399 and P0301) Random Misfire. I thought it was bad gas. I pumped a full tank of Chevorns gas the next few days. CEL still popped up with same code. My car is fully stock nothing done to it.

Last NOV i had the same CEL but i had a valve adjusted and it fixed the problem until NOW.

symptoms: It idles pretty low <500rpm sometimes and it wants to die when I'm at a full stop but doesnt. I clear the code but after 3 starts it will pop up again.


Things I done so far is: Change sparks plugs, switch around the coil packs, MAP SENSOR (did the map wack with the old one didn't do anything)and that's about it. Same CEL PO1399 and P0301.

I want to take it to the Mistlin HOnda in Modesto. But I know they are going to charge me a grip. Do you guys know anyplace I can take my car diagnose and to get it fix? Thanks guys.

J_inDA_s2k

i had a similar problem awhile back it was a bad knock sensor.

crazysupratt

it could be a number of things...check coil pack and spark plugs

s2kNORcali

well i just installed some used coil packs and injectors with <25K on them from a running s2k. And still the same problem. Still P01399 and P0301. Don't know what do next.

Could it be the Knock sensor?! Does anyone here have a spare one lying around or just let me borrow one.

s2kNORcali

well, i finally took my car to a shop in hanford called Kenshi.

They did a compression testing: (95, 210, 215,215).
My compression in cylinder 1 was really low. Then they did a leak down testing found out my my exhaust valve are leaking in cylinder 1.

What they said next was to take out the head and inspect it more. I would probably need to do a valve job. They quoted me $2,000 for the job.

How much does it usually cost? I remember some people updated the valves and retainers with AP2. I'm not sure. Is their a shop you guys recommend to take my car for a valve job?

What should i do next? Thanks

yms2k

for $2000.... your better off buying a new head. Replacing the valve guides and exhaust valves shouldn't cost that much.

rob.ok

Yeah... that is a little high. I don't know how good you are with tools but it's not that hard to pull the head.

Your retainers probably don't have nothing to do with the leak. It might be a bent valve. Usually the intake valves get damaged if there is a mechanical over rev.

You can definitely get a good used head for way less than that though. You just have to look around.

Let us know if you need any hep.

I posted a good machine shop here in Fresno. It's just down a few thread from this one.

-Rob

s2kNORcali

Where is a good machine shop in fresno? I'll also look around for a used head

rob.ok

https://www.s2ki.com/forums/index.php?showtopic=768656