Originally Posted by one eyed *****

it idles just like stock, revvs just like stock, i have low compression on the 2 rear cylinders, 150 and 120 and all the rest i have 175-180.

im not 100% dead set on what the actual issue is, ill tear it apart this weekend to inspect the cam phasers and cams.

ill do a leak down test also.

Originally Posted by 07 S197

when you did the compression test, did you also do a wet test?

Originally Posted by 07 S197

when you did the compression test, did you also do a wet test?

Originally Posted by moosestang

Well hopefully it is just the cam phasers on those cylinders causing the low compression, but I do not know exactly how the VCT on these cars work. Lets hope you can just replace those phasers and be back to normal.

Originally Posted by one eyed *****

not yet, could i just use a funnel to pour some oil down in the cylinder? how much oil should i pour in there? ive never done a wet test before.

Originally Posted by moosestang

By wet test, you mean pouring some oil in the cylinder to see if compression increases?

Originally Posted by one eyed *****

not yet, could i just use a funnel to pour some oil down in the cylinder? how much oil should i pour in there? ive never done a wet test before.

Originally Posted by moosestang

Well hopefully it is just the cam phasers on those cylinders causing the low compression, but I do not know exactly how the VCT on these cars work. Lets hope you can just replace those phasers and be back to normal.

Originally Posted by 07 S197

VCT controls the cam timing by oil pressure. It wouldnt be able to affect just 2 cylinders on that bank, it would affect all 4. pretty much VCT is just a hydraulic controlled adjustable cam gear. It would be nice if his problem was that small, but i dont think it is