warm engine stumble - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

heyitsmesmitty · 08-01-2007, 18:00

hi ford guys and gals, got a problem, i have a 66' fairlane, put a lae model 302 in it w/ gt-40p heads, car ran great for about 1500 miles, but now everytime the engine warms up (180-190), the engine begins to stumble or virbrate on light acceleration. i have no idea what the problem could be, i've changed my plugs, wires, coil, timed it, all just leaving me disappointed. any one have any ideas of what it could be?
thanks
sean

rgv500 · 08-03-2007, 19:49

Just an idea but I run a 302 in a jet boat and found after installing a holley carb and new HE dizzy that the motor would miss fire once warm and when revs were applied. Turned out to be float level on carb was set way to high

jackdaniels · 08-23-2007, 11:06

On my other ford pickup case it was doing the same thing,
i started messing with it and even was backfireing..
The problem was in the carburetor once it warmed..
Took it to a place and they rebuilt it and the problem was gone..
It would be good to check it....

rgv500 · 08-26-2007, 22:22

Yip check the carb. I good check is to look down the carb throat with the engine running fuel should be atomised and not just pouring into the throat

heyitsmesmitty · 09-04-2007, 10:29

thanks guys, i think it is the carb, i'm gonna rebuild it, or rather have someone else who knows how to rebuild it do it. that should do the trick, i hope
thanks again

zaneabel · 09-27-2007, 06:03

Maybe fuel injectors? New engine into old car fuel system. Just a suggestion, have the fuel injectors cleaned and install a new fuel filter. Hope all goes well.