LSJBalt

Let me start by saying thank you for any input,ideas,or suggestions.. Ok I recently bought a 2010 cobalt ss from Car Vision in king of pussia Pa got what I thought was a hell of a deal the only downside was the car had 137400 miles got the car home did a oil change. The next day got some oem plugs to replace the current ones started changing the plugs I pulled I think number 2 plug??(second from the left passenger side) the plug had oil on it and I'm like f#%k so my first thought was rings or valve seals so after doing a compression test all four cylinders at or around 150psi so must be the valve seals?? So the other day I get a cel P2187 running lean at idle and now the car won't boost past 5psi!! So could my CEL be related to my oil problem or not?? Like I said any idea suggestions would be greatly appreciated
By the way the car is stock I think except for the stupid ebay intercooler

Snail_SS

iTrader: (3)

Well on compression it shouldn't be lower than 100psi so compression wise your good. Have you tried taking out the new plugs and see if they have oil?

LSJBalt

Yes the same cylinder had oil on the plug... Also I have the GM performance tags ( little silver tag) was that standard on the LNF??? Cause the LSJ they came with stage kits right

Snail_SS

iTrader: (3)

If i know what your talking about yeah my lnf has it.

LSJBalt

Bump

ECaulk

iTrader: (6)

Well I'd start with figuring out if there is a boost leak and find someone near you with HPTuners or Trifecta to see if you have something other than a stock tune.

SSlobalt

We need address these issues one at a time. For the 2187 code, if you have the stock intake piping, check the connection of the braided hose to the intake piping. People break that thing all the time and it causes this code.

LSJBalt

Yes it's good I checked both side of that line... Today I decided to go fill my gas tank so on the ride to the gas station the car decided to run right( build full boost) and after filling the tank with 93 tried starting the car and nothing it took 3 times of turning the key over to start and everything seemed fine so I drove it home. Tomorrow I think I'm going to put the old plugs back in it and see if that makes difference cause the cel light boost problem didn't happen until I put new plugs in it.

LSJBalt

So this morning I put the autolites back in the car which those are the ones that came in the car when I bought it the cel went out and no more boost problem!!! I'm confused

SSlobalt

Hmm. I wonder if you have some kind of EVAP issue. You can check the EVAP purge solenoid on the intake.
You could also have a vent valve issue. It's number 26. I don't know how to test that one.