Classic Mustangs (Tech)Technical discussions about the Mustangs of yester-year.
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Hi, i bought a 1965 mustang for my girlfriend a few months ago. the previous owner told us about how it had run out of fuel on him at one point but he had since installed a clear in-line filter before the carb in hopes of fixing the problem. i found out the other night that the problem will still arise if the car is driven over a certain speed (45 in this case, but i retuned the carb as it was running rich. now the car can drive at about 55 for a few minutes before the problem arises again) seems to be a fuel starvation issue. the guy at the local parts store told me to check to see if it is vapor locking, but it doesnt seem to be as no part of the fuel line comes remotely close to the block. i have been thinking of putting an aftermarket fuel pump/booster pump on the car to see a weak pump is the problem. car has a bone stock 302 2bbl with a c4 auto trans. car will drive great under 45mph but anything above leaves you at risk of starving it out. any feedback would be appriciated. thanks in advance.
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thanks for the reply. ill test it when i get a chance. i suspected the fuel pump but wasn't sure if there was any way to check since our other cars are EFI. but now i know! anyways thanks again. ill post updates when i get the chance.
I can't remember specifically for the 65 Mustang but on my 64 Fairlane there was a little 3 or 4 inch piece of rubber hose between the fuel tank and the hard line that delivers the fuel to the carb.
In my case the car would run ok up until a certain speed then cough and fart and barely make it home. Turns out that that little rubber hose had basically crystallized inside and was severely restricting the fuel flow.
Just something easy to check while you're 'cooning around looking for the problem.
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Thanks ill take a peek at it. I figured it would be as even my early bronco still has a similar hose to connect the tank to the hard fuel line. Still haven't gotten a chance to take a look around at it since we are currently in OR for a family gathering. I'm posting this from my phone. It wouldn't surprise me if the line was the issue since you can tell the restoration on the car was done on a very tight budget as a lot of things were kind of half ***ed. I wouldnt be surprised if its original from the factory. Anyways thanks again, will take a look when I get chance.
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