Hi Folks,
This is my first post for my newly acquired C27 with an A4. Quick background. The PO had no trouble with the engine for many years until this past year when it started running on 3 cylinders. He had a mechanic go through the engine and in fact the engine looks like it has been out of the boat because the motor mounts look brand new. After the overhaul it was still running on three cylinders and he gave up, and now I have it.
I've been able to confirm with the thumb test (I have the Moyer manual) that there is strong compression on all but number 4. After reading a lot of posts on this, I've poured some MMO in the plug hole and have been also spraying WD40 toward the valves. I'm only about three hours into this and no progress yet. I'll keep this up but I have a couple of questions from what I've read so far.
I've been trying to use an Allen wrench to tap on the valve but I don't know what I'm supposed to be feeling for. I'm assuming that its the exhaust valve stuck open, since that seems to be the usual culprit.
How do I use the Allen wrench to feel the valve and how do I try to tap it down?
Is the exhaust valve toward the front or the back of the engine?
Is WD40 ok or should I try something else?
One more problem is that I'm only with the boat until Monday then I won't be able to get back to it until July. If I can't get it unstuck, will it be any worse when I come back?
This is my first post for my newly acquired C27 with an A4. Quick background. The PO had no trouble with the engine for many years until this past year when it started running on 3 cylinders. He had a mechanic go through the engine and in fact the engine looks like it has been out of the boat because the motor mounts look brand new. After the overhaul it was still running on three cylinders and he gave up, and now I have it.
I've been able to confirm with the thumb test (I have the Moyer manual) that there is strong compression on all but number 4. After reading a lot of posts on this, I've poured some MMO in the plug hole and have been also spraying WD40 toward the valves. I'm only about three hours into this and no progress yet. I'll keep this up but I have a couple of questions from what I've read so far.
I've been trying to use an Allen wrench to tap on the valve but I don't know what I'm supposed to be feeling for. I'm assuming that its the exhaust valve stuck open, since that seems to be the usual culprit.
How do I use the Allen wrench to feel the valve and how do I try to tap it down?
Is the exhaust valve toward the front or the back of the engine?
Is WD40 ok or should I try something else?
One more problem is that I'm only with the boat until Monday then I won't be able to get back to it until July. If I can't get it unstuck, will it be any worse when I come back?
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