Vapor lock? PLEASE HELP!!!!
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Senior User
Joined: Feb 2010
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From: st cloud, MN
Vapor lock? PLEASE HELP!!!!
Can you please explain the symptoms are and what it is and how I can stop it. The motor is a 390 CID in a 63 merc, 18k miles since new if that makes a difference. Please help!
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Not hot enough for vapor lock, nor have I heard any first hand experience with it in years.
Why don't you describe the symptoms of your issue (in detail please) and lets go from there.
John
Why don't you describe the symptoms of your issue (in detail please) and lets go from there.
John
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Vapor lock is when a part of the fuel system gets so hot that the gas boils, creating an air pocket usually at of near the fuel pump. Then there is no fuel flow. You can't vapor lock a cold engine. Even a warm engine is unlikely to vapor lock until you shut it off and let the temp rise for 15 to 30 minutes, then the engine starts and runs on the gas in the carb (or not if the carb fuel percolates) then dies because there is no additional fuel. There is another thing that happens, but it is also with a hot engine and it is shut off. The fuel in the carb boils and then there is a crank no start. It is called percolation as previously mentioned.
You are assuming you have something you may not have. Describe what is happening rather than assume something you know nothing about by your own admission.
You are assuming you have something you may not have. Describe what is happening rather than assume something you know nothing about by your own admission.
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Senior User
Joined: Feb 2010
Posts: 224
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From: st cloud, MN
Well we thinks that cause back when we drove the car we replaced the whole complete fule dilervry system, rebuilt the carB but I can't remember what types of sounds there was or what it does, thanks a bundle for telling me that wonderful info and it will be put to use.
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