Last post on Sep 11, 2012 at 4:19 PM
You are in the Saturn S-Series
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Saturn S-Series, Sedan
#1416 of 1418 Re: 1994 SL2 No compression in #2 Cylinder [renomike]
Aug 03, 2012 (3:22 pm)
When there is 0 psi reading on compression test of #2 cylinder, cyl #2 is completely vented. A burnt valve would still have some compression. The rough driving sounds to the result of operating on 3 cylinders. Not sure why the coolant temperature rose on you, probably normal for slow grind up the hill with load. My guess is that the electrode of spark plug failed and the broken electrode served as hard debris that may have scored up your cylinders and vented the cylinder compression that way. Search Richpin videos on Youtube for removing valve cover. Easy job, but that only helps you confirm valve motion. I am afraid the damage could be in your block, piston, its rings after driving so far with debris in cylinder. Good would be the electrode hung up in your valves to mess up the head instead of the bore. If your plugs are original, that would suggest failure of a plug from excessive age/use. Major engine job either way I am afraid.
#1417 of 1418 Re: 1994 SL2 No compression in #2 Cylinder [renomike]
Aug 03, 2012 (4:25 pm)
You may want to pull the oil pan off. This won't fix anything but it may give you some clues. You may find some debris in the bottom of the pan or with a good flash light you may be able to see the cylinder or piston from below.
Sep 11, 2012 (4:19 pm)
I am getting codes 11, 25, 71, 77 can anyone help me with what there are and how best to get them fixed?