440 won't start until it cools down about 30min?
07-31-2011, 11:12 AM
#1
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440 won't start until it cools down about 30min?
Timing set to 10* BTDC Runs Great until I shut it down and let it sit about 5-10 minutes then it won't fire until is sit another 30mins.
What do you thik might cause this?
What do you thik might cause this?
07-31-2011, 03:12 PM
#3
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Vapor Lock
Funny you should say that. I've noticed that the upper will have a pocket of air in it occassionally.
The main line from the pump to the carb is very close to the block and exhaust manafold.
How far awy does it need to be?
The main line from the pump to the carb is very close to the block and exhaust manafold.
How far awy does it need to be?
08-01-2011, 09:45 PM
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my 360 does the same thing does great when motor is cold after it warms up w in 5mins of shuttin it off it ll start w just a bump but after that it takes a min to crank my fuel lines are away from heat as much as possible
08-02-2011, 03:11 PM
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Not an expert by far, but
From reading through other forums. I found some comments on timing and if it was not right your ignition spark could be affected after the engine gets hot. You might try there. I would think you would want to advance the timing closer to TDC, but I'm not sure. Maybe someone else has some better advice.
08-02-2011, 08:17 PM
#7
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08-03-2011, 11:29 AM
#8
From reading through other forums. I found some comments on timing and if it was not right your ignition spark could be affected after the engine gets hot. You might try there. I would think you would want to advance the timing closer to TDC, but I'm not sure. Maybe someone else has some better advice.
Retard would make it closer to TDC.
Retard more and you get After top dead center. ATDC
Timing can indeed cause this if it is advanced too far it will try to start but kick back from flame front hitting the piston as it tries to come up against it.
10* btdc is about right.
By the way he fixed it read up a few posts. It was the fuel line getting hot.
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