92 302 dead hole
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Senior User
Joined: Sep 2010
Posts: 183
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From: Oregon City
92 302 dead hole
Hi folks,
I picked up a 92 f150 with no compression in the rear drivers side hole. Thinking that I will pull the engine and remove head. If the cylinder wall looks ok, I am thinking of just honing and replacing the one piston. If things don't look good, gonna swap in a wrecking yard motor.
Any thoughts or suggestions on this little project, anything I should watch out for?
Any thoughts would be appreciated. Thanks
I picked up a 92 f150 with no compression in the rear drivers side hole. Thinking that I will pull the engine and remove head. If the cylinder wall looks ok, I am thinking of just honing and replacing the one piston. If things don't look good, gonna swap in a wrecking yard motor.
Any thoughts or suggestions on this little project, anything I should watch out for?
Any thoughts would be appreciated. Thanks
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Senior User
Joined: Sep 2010
Posts: 183
Likes: 7
From: Oregon City
Originally Posted by '89F2urd
Leak down tells you where the compression is going...a bad valve or seat can result in 0 compression as well.
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Senior User
Joined: Sep 2010
Posts: 183
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From: Oregon City
Originally Posted by Lead Head
It's probably a melted piston. Somewhat common for that piston to melt down. Leading theory is PCV gasses cause detonation in that cylinder.
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Methanoholic
Joined: Mar 2009
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From: Maine (NorCal Native)
It's pretty easy to tell if it's a burnt piston. Crankcase pressure and the Spark Plug will likely have aluminum on it.
-Enjoy
fh : )_~
-Enjoy
fh : )_~
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Thread Starter
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Senior User
Joined: Sep 2010
Posts: 183
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From: Oregon City
Started the process of pulling the engine yesterday. We have everything disconnected and are ready to come out. We decided that it will be easiest to pick and maneuver that engine with a plate that bolts on the manifold, so I am going to build one this morning.
Only other stuff we found was a crack in the exhaust manifold, and the egr line was broke in half. Thinking about trying to weld that manifold. Anyone had any luck with that?
Only other stuff we found was a crack in the exhaust manifold, and the egr line was broke in half. Thinking about trying to weld that manifold. Anyone had any luck with that?
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Senior User
Joined: Sep 2010
Posts: 183
Likes: 7
From: Oregon City
Well the engine is out and we pulled the head off. Looks like it will be more than just a piston. The wall is scored pretty bad. Will be fine for rebuilding, but we are looking at another that we can just swap in there.
