mr bump
Well-Known Member
Hello all, carb problem. Cars running fine but that first pump of the gas there's a terrible flat spot which will not go away. Any ideas on a cure?
Joe...72 cs with twin zeniths.
Joe...72 cs with twin zeniths.
Flat spot on acceleration.
- Thread starter mr bump
- Start date
I had the same symptom with my webers. Spencer at Mesa Performance suggested I replace the gaskets between the carbs and intake manifold, thinking it was an air leak. He also suggested filling in the bottom of the carb spacers. It seems they dont mate well to the manifold. I took his advice and replaced the gaskets and filled in the bottom of the spacers with Bondo. The flat spot is now gone.
Hope that helps.
Before
After
Hope that helps.
Before
After
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check accelerator pumps-they should squirt a good stream into the venturi when throttle activated from idle
+1
plus check the position and direction of the tiny brass hoses that injects the mentioned squirt into the main air stream
The Don
Well-Known Member
Joe, massive thanks for your help in setting my car up on Saturday in getting the engine to run properly.
Flat spot? Are you talking about your tyres after lighting them up in 2nd and 3rd in Solihull town centre to show that your LSD works? :-D :lol:
Flat spot? Are you talking about your tyres after lighting them up in 2nd and 3rd in Solihull town centre to show that your LSD works? :-D :lol:
mr bump
Well-Known Member
Hahaha, those rooster tails can be seen from space so im now told!! It certainly shocked that Bentley driver when he saw a 72 cs coming at him sideways eh!!!
It was my plesure andrew, allways happy to help a cs owner you know that and the car is coming on superb mate, won't be long now eh!!