Spark Plug Condition Question
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Joined: Jun 2007
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Spark Plug Condition Question
I changed out all the major components of the electrical system and the spark plugs had oil deposits on the plugs. Its a 79 460 and had sat for 5 years. It ran before I changed everything. It runs good now other than needing carb rebuild and great oil pressure. Could the oil deposits be from poor electric system needing replaced and didnt have good spark or from sitting and the valves had leaked from sitting? Anything I can add to clean the top end?
Post Fiend
Joined: Jan 2003
Posts: 10,323
Likes: 2
From: Montana Territory
Oil on the plugs typically indicates poor piston ring seal. That would be very common after sitting for so long. If possible, get out on a frontage road or a long stretch and give it a chance to breathe and stretch its legs. Let it get warm and see how they look after that. Make sure to watch your oil level if it smokes a lot.
Also, you can have bad valve stem seals, also common after sitting for so long. This is a little more in depth repair that requires disassembly of the valve train.
Also, you can have bad valve stem seals, also common after sitting for so long. This is a little more in depth repair that requires disassembly of the valve train.
Post Fiend
Joined: Jan 2003
Posts: 10,323
Likes: 2
From: Montana Territory
If you have even one hole in your exhaust system you may never see much blue smoke from the tailpipe.
Hopefully blowing the snot out of it will clear things up, give it a good hour or so run to get everything nice and warm.
Hopefully blowing the snot out of it will clear things up, give it a good hour or so run to get everything nice and warm.
