2007 Ion – Cylinder 3 Misfire
#11
Thanks for the reply. It would really suck if it's a bad piston/cylinder.
So I just took off the valve cover. I didn't see anything that was obviously wrong. Is there anything I can do at this point before removing the cylinder head? Is there a way to check if a valve spring (or valve guide) is weak or broken?
So I just took off the valve cover. I didn't see anything that was obviously wrong. Is there anything I can do at this point before removing the cylinder head? Is there a way to check if a valve spring (or valve guide) is weak or broken?
#12
A wet and dry compression test is very good at determining where the problem lies. If the compression does not change with oil it is a valve issue. If the compression changes for the better it is piston and or ring related. The car only smokes if it is burning the oil but that cylinder doesn’t have enough compression to fire. I would just tear into it. A borescope down the plug hole will let you look around, but I have never bought one.
#18
Update:
I did a compression leak test on Cylinder #3. I heard air when I put my ear up to the tail pipe.
I pulled off the cylinder head. As you can see in these photos, one of the exhaust valves for cylinder #3 is burnt:
https://www.dropbox.com/sh/xv5b56lt5...adgq3eu0a?dl=0
I'm thinking the best thing is to purchase a refurbished cylinder head. Thoughts? If you agree this is a good idea, are there vendors you would recommend, and/or vendors I should stay away from?
I did a compression leak test on Cylinder #3. I heard air when I put my ear up to the tail pipe.
I pulled off the cylinder head. As you can see in these photos, one of the exhaust valves for cylinder #3 is burnt:
https://www.dropbox.com/sh/xv5b56lt5...adgq3eu0a?dl=0
I'm thinking the best thing is to purchase a refurbished cylinder head. Thoughts? If you agree this is a good idea, are there vendors you would recommend, and/or vendors I should stay away from?
#19
Honestly, id either find one at a junk yard.
or if youre on facebook, look up category v portworx.
His work is phenomenal. His main focus is porting but he also does rebuild.
Other option would be TJPerformance. He does anything motor related.
They have both been building Ecotecs for 10+ years
or if youre on facebook, look up category v portworx.
His work is phenomenal. His main focus is porting but he also does rebuild.
Other option would be TJPerformance. He does anything motor related.
They have both been building Ecotecs for 10+ years
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