1964.5 Mustang Convt 289 V8 fuel issues
04-29-2016, 02:27 PM
#1
Thread Starter
Join Date: Apr 2016
Location: sc
Posts: 2
1964.5 Mustang Convt 289 V8 fuel issues
I'm new to this and am hoping I can get some help here. Is there a way to tell if my fuel pump is going bad? The car is mostly original. She just purrs one day and then, when I go to drive her the next day, she acts like she is gasping for gas. I installed a new fuel line because the original rusted out and I removed the air filter just to see if she ran any differently, but noooo. Replaced the air filter. Now the car starts but stalls out going down the road. sinking feeling when you are stepping on the gas and she is faltering. Any help would be appreciated
04-29-2016, 03:08 PM
#2
4th Gear Member
Join Date: Nov 2013
Location: arizona
Posts: 1,398
might have rust in the tank that slowly gets sucked up around the filter eventually cutting gas flow off . engine dis, suction stops, enough rut falls off to start and run the engine for a few more miles.
remove the fuel line from the carb.
place the end of it into a container
disconnect the coil wire
turn the engine over
if the gas hurls out at 200 mph, your pump is good . if it trickles out, the pump is weak and/or the fuel filter in the tan is getting plugged.
if you have an air hose, you can remove the gas cap then blow 90 psi of air into the metal hose at the fender apron and this will blow the fuel filter apart or off . then install a tiny clear plastic filter between the fender apron and fuel pump and try it . you can then see if rust is getting sucked into the filter.
put a dash pot on the carb.
set the fuel mix screws properly.
take to aspirin and call us in the morning.
remove the fuel line from the carb.
place the end of it into a container
disconnect the coil wire
turn the engine over
if the gas hurls out at 200 mph, your pump is good . if it trickles out, the pump is weak and/or the fuel filter in the tan is getting plugged.
if you have an air hose, you can remove the gas cap then blow 90 psi of air into the metal hose at the fender apron and this will blow the fuel filter apart or off . then install a tiny clear plastic filter between the fender apron and fuel pump and try it . you can then see if rust is getting sucked into the filter.
put a dash pot on the carb.
set the fuel mix screws properly.
take to aspirin and call us in the morning.
04-29-2016, 03:16 PM
#3
3rd Gear Member
Join Date: May 2015
Location: Ohio
Posts: 578
Sounds like it could be a sticking float in the carb also...when she's running bad, just tap the carb where the float is with the back side of a screwdriver and see if she doesn't instantly perk up. Easy enough check.
04-30-2016, 02:35 PM
#4
Foghorn Leghorn
Join Date: Dec 2006
Location: I reside in a near constant state of amazment.
Posts: 2,923
An oldie but a goodie but I don't think it would apply to you because you replaced your fuel line but here it is none the less...
On a lot of old Fords there is about a 4" piece of rubber hose between the gas tank and the hard line. I had an old Fairlane that exhibited symptoms similar to yours and it turned out that the inside of that little rubber hose had crystalized to the point of starving the engine for gas.
On a lot of old Fords there is about a 4" piece of rubber hose between the gas tank and the hard line. I had an old Fairlane that exhibited symptoms similar to yours and it turned out that the inside of that little rubber hose had crystalized to the point of starving the engine for gas.
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