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Help please - new member

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Gary75

Freshman Member
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'75 Roadster. Got the Weber kit installed, new exhaust, timing set, new dizzy internal parts, cap rotor wires plugs, chassis wiring sorted out. Starts great, runs smooth in all gears, accelerates, no hesitation, etc.

It idles nice, but will start to die out after a few minutes. Turn it off and it will NOT start again. Acts like timing is off - checked that. Plugs are a bit rich, but not to the point that it deters re-start -- I don't think. New fuel pump - good delivery.

Do you think the heater routing thru the manifold has an effect?

After all this hard work, I am at wit's end. Gotta be something SIMPLE, huh?

Help please - - all recommendations welcome.

Thanks in advance, Gary
 
Good fuel delivery? How much fuel pressure? Plumb in a fuel pressure gauge and check real psi. Have you got a vacuum gauge? Plumb in a vacuum gauge. If fuel pressure is good and steady watch the vacuum and lean or richen carb until you have maximum vacuum ( 17 lbs. would be nice ) then see if it dies and recheck plugs for rich and/or wet. I figure you just need to dial in the carb for final set, since timing and dwell are on the money. Without dwell,timing, fuel and vacuum stats, as close as I can get. Keep posting so more will chime in and we'll cap this thing.

Also: Welcome aboard!
 
Welcome, Gary.

A suggestion: remove the carb after it has exhibited the problem. My bet is you will find a pool of fuel in the intake under the carb. Heat expands the fuel in the bowl, raising the level. Then it then "dribbles" thru the jets into the manifold (Cannon is my guess). Heat shielding helps, you can lower the float a MM, too (tho that can cause other problems). Fuel pressure should be no more than 3~4 PSI max.
 
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