Made it out to SB Sunday, stayed a couple days, saw lots of Studes, bought some parts at the swap meet, went all through that really neat museum, made it back home (had a prior committment), the Hawk ran flawlessly for the most part, with the following exception.
It seemed that it was constantly "surging", as if it was momentarily losing power and then getting it right back in a matter of seconds.
Since getting back, I checked the fuel flow in the carb and it is nice and smooth (no spitting), checked the condition of the plugs (perfect), checked for air/vacuum leaks (found none), points and plug wires all ok, distributor contacts clean.
I'm at a loss as to what to check next. At idle, you can hear the rpms begin to pick up speed for a while (about 50 rpm or so), then drop back down.
Occasionally, the motor seems to 'miss a beat', like one spark plug simply chose not to fire, just one time, but only once in a while.
While driving at steady highway speeds, this surging I speak of "feels" like a plug loads up momentarily and then cleans itself off and it does it constantly, on and off, on and off, but no plugs show any signs of oil fouling.
At idle, it "seems" like it has a vacuum leak that just comes and goes.
Please, someone help me out here and give me a clue what I should be looking for.
1962 GT Hawk 4sp
It seemed that it was constantly "surging", as if it was momentarily losing power and then getting it right back in a matter of seconds.
Since getting back, I checked the fuel flow in the carb and it is nice and smooth (no spitting), checked the condition of the plugs (perfect), checked for air/vacuum leaks (found none), points and plug wires all ok, distributor contacts clean.
I'm at a loss as to what to check next. At idle, you can hear the rpms begin to pick up speed for a while (about 50 rpm or so), then drop back down.
Occasionally, the motor seems to 'miss a beat', like one spark plug simply chose not to fire, just one time, but only once in a while.
While driving at steady highway speeds, this surging I speak of "feels" like a plug loads up momentarily and then cleans itself off and it does it constantly, on and off, on and off, but no plugs show any signs of oil fouling.
At idle, it "seems" like it has a vacuum leak that just comes and goes.
Please, someone help me out here and give me a clue what I should be looking for.
1962 GT Hawk 4sp
Comment