I last winter I replaced the carb of my Ford Mustang GT 1966 with a rebuild Autolite 4100 from Pony Carburetors (I sent them an email too). I also replaced some fuel lines and filters. Everything worked perfect. I installed the carb with "factory" settings and I was ready to drive. The car was runing smooth and the fuel consumption was considerably lower.
Two weeks ago I woke up my pony from his winter sleep and suddenly I have the following problem (and it's getting worse):
When I drive the car on a flat and straight road at higher RPMs at about 40-50 mph and take the foot from the gas for 5-10 seconds and then press the gas pedal again the engine starts to stutter and almost dies. It's like a big "hole" - no power just a shaking.
When I keep the gas pedal pressed, the car will not accelerate. I have to take the foot from the gas and *gently, gently* press it again to speed up.
It only happens on a warm engine. The choke seems to work well. Outside temperature here is about 60°F at the moment.
First the problem only occurred 1-2 times every drive but now it seems it is getting worse. The stalling is longer and sometimes I have to depress and press the gas pedal 3-4 times to accelerate again. And today the engine died on a flat road!
Could this be a timing problem? (I have an Pertronix system installed). I didn't check the timing till now.
What could have changed over the winter time? Gaskets? Vacuum?
As everything was working marvelous last summer, I guess it can't be a floating level problem. The accelerator pump?
Is there a way to determine if the engine is getting to much or to less fuel?
As I am new to carburetors please excuse my (maybe) stupid questions.
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