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naa won't start warm

M

mike/holly jones

Member
jubilee starts very well when cold-will not start when at warm operation temp. in the past i have changed points-condenser-dist cap-rotor-coil...still wouldn't start when warm.

installed electronic ignition...still no warm start
installed after market carb...engine runs great but won't restart when warm

engine does not use oil between changes...oil pressure is 45 max at operating rpm's and 25 at idle.

need to check for spark next...any ideas, mike
 
Sounds like you threw enough parts at it. Are the plugs wet when it wont start? What is the compression? is the gas tank building up pressure, gas cap plugged.
 
pull the drain plug on carb. Catch fuel in white paper towel.
The brass elbow that connects gas like to carb has a screen.
Remove the elbow and look at screen.

I had to replace tank on my Jubilee. The coating inside tank looked like gray primer, it was flaking off.

Don't use a paper inline filter. Screen only.
My paper filter would vapor lock when gas warmed to 155 degrees.
 
Does it still have the heat shield under the gas tank?? Do you have the correct fuel line?? Common to have the fuel lien get hot and boil the gas in the line and cause a problem like you have
 
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