ArielAtom300

68k mile car..check engine light is on,so won't pass state inspection.Car starts and runs fine..slight shake at idle. On road,pulls fine..will spin tires from a stop. NO hint of a skip while driving, BUT at idle,when cold it will toss the skip code and flash the check engine light. Compression test shows 125psi cyl #1,all others 200psi. Skip code is for cyl #1. New plugs,new coil. No difference. Do these 2.2s have valve issues or head cracks on the valve seats? I could pull the head,but I can get a used motor for less than it will cost to replace the head..so that is how I am leaning. Does anyone know what the issues are on these 2.2s that die at such a low mileage due to low compression? Glad I have an LSJ in my Atom..

Slowbalt2000

iTrader: (1)

It could be the rings.

I found number 2 cyl rings in my intake manifold, 125psi on that cylinder. Car runs and drives fine.

Superbolt

That was rings after ?

Snail_SS

iTrader: (3)

I had that problem on my 2.2 but mine was cyl 4 and had to replace the valves but that balt was at 170k miles

ArielAtom300

I am wondering if I should keep the motor I remove from the car..is the 2.2L block the same as the LSJ or the 2.4L? I know the LSJ has piston oil squirters,but if I were building a performance engine,I would not care about that feature. If the Ecotec blocks are all the same,maybe I could use the core as a 2.4L build project. Hmm…I do have a spare LSJ head as well..

Slowbalt2000

iTrader: (1)

2.2 and lsj are the same block. 2.4 is 88mm

ArielAtom300

^ Good to know. Is the 2.4 block the same as well, just bigger diameter liners/sleeves? I do have the tool to remove/install new liners..and have done it with success in the past..but only on an LSJ.

Slowbalt2000

iTrader: (1)

Everything is the same except the bore correct

ArielAtom300

Is the crank trigger wheel the same on the 2.2,2.4 and 2.0 engines?

Slowbalt2000

iTrader: (1)

Depends on the years.

ArielAtom300

If the lsj is a 2007 and so is the 2.2,same crank wheel?

Slowbalt2000

iTrader: (1)

Nope. Lsj is different from all the others. It has a different orientation. Zzp may be able to fix that for you though depending on what you wanna do.