Re: Bucking Slightly at Cruising Speeds

Posted by Joe On 2024/8/16 21:06:16

Ugh, hate to bring this back up to the top, but my issue has reared it's head. I ended up both adjusting the metering rods and adding a shim to vacuum piston. Initially, it was phenomenal, average daily driver acceleration and cruise. Was so happy I decided to extend my drive. Well... after about 25 minutes, started bucking slightly, then after a 3 minute stop light, vapor locked. Kicked on my electric pump and it came back around. Still... heat is a problem.

I'm working on potential problem areas for the vapor lock. I have a rubber line that goes right under the radiator to the original brass block on the frame, then to the inlet hose. To me, it looked like the hose might be prone to kinking/collapsing when it warms up, too. I also noticed my inlet hose is a 1/4" ID (shouldn't it be 5/16?")

For the inlet hose, should be at a different angle to help prevent collapse of the hose?

Just to reiterate, heat riser valve functions, and the insulator is in place between the manifold and carburetor. The exhaust is somewhat of a question mark, and I'm not sure there isn't some sort of blockage keeping extra heat at the manifold. Any additional thoughts would be very welcome.

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