Missing Heat Shield Causing Oil Fouling?
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CF Beginner
Joined: Mar 2012
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Missing Heat Shield Causing Oil Fouling?
This is for a 1991 Chevy G10 Van with a 5.7L (350cu.in.) engine.
The engine has been missing at an idle. The warmer it gets the more it misses.
The number 1 and 3 spark plugs are oil fouled.
The spark plug heat shield for the number 1 and 3 plugs is missing. I bought this van 30,000 miles ago. I was told that this engine was new and only had 40,000 miles on it. The guy who sold me the van put the engine in himself.
The engine oil is clean.
I can't help thinking that the missing heat shields have something to do with the missing. Has anyone ever heard of a missing heat shield causing oil fouling and missing?
The engine has been missing at an idle. The warmer it gets the more it misses.
The number 1 and 3 spark plugs are oil fouled.
The spark plug heat shield for the number 1 and 3 plugs is missing. I bought this van 30,000 miles ago. I was told that this engine was new and only had 40,000 miles on it. The guy who sold me the van put the engine in himself.
The engine oil is clean.
I can't help thinking that the missing heat shields have something to do with the missing. Has anyone ever heard of a missing heat shield causing oil fouling and missing?
CF Monarch
Joined: Jul 2011
Posts: 5,920
Likes: 140
From: kevinkpk
This is for a 1991 Chevy G10 Van with a 5.7L (350cu.in.) engine.
The engine has been missing at an idle. The warmer it gets the more it misses.
The number 1 and 3 spark plugs are oil fouled.
The spark plug heat shield for the number 1 and 3 plugs is missing. I bought this van 30,000 miles ago. I was told that this engine was new and only had 40,000 miles on it. The guy who sold me the van put the engine in himself.
The engine oil is clean.
I can't help thinking that the missing heat shields have something to do with the missing. Has anyone ever heard of a missing heat shield causing oil fouling and missing?
The engine has been missing at an idle. The warmer it gets the more it misses.
The number 1 and 3 spark plugs are oil fouled.
The spark plug heat shield for the number 1 and 3 plugs is missing. I bought this van 30,000 miles ago. I was told that this engine was new and only had 40,000 miles on it. The guy who sold me the van put the engine in himself.
The engine oil is clean.
I can't help thinking that the missing heat shields have something to do with the missing. Has anyone ever heard of a missing heat shield causing oil fouling and missing?
Thread Starter
CF Beginner
Joined: Mar 2012
Posts: 8
Likes: 0
It turns out that the number 1 and 3 spark plug cables were switched. I switched them back and I have noticeably more power. Later on down the road I will take a look at the plugs and see if they are still fouled.
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