Wildbunch02
Senior Member
Hello everyone, I recently purchased a 1975 NYB and I am having some drive-ability issues that I hope I can resolve with everyone's help. I consider myself a little bit more than a novice, more of a parts changer. I really would like to be able to diagnose better since guessing at what to buy next is hit or miss and becomes expensive.
The car has a 440 with a Carter TQ. It is fairly easy to start, but when its warm it hesitates when I put it in gear and try to take off. I have to pedal the gas to keep from stalling, and she takes off fine. When cruising if I accelerate it will bog then take off, sometimes I hear a slight backfire before she accelerates.
The car was represented as having been collector owned and driven very infrequently. The mileage shows 47000, although I suspect that is not correct.
The engine sounds good, and the car definitely has been maintained.
The TQ has a tag on it which states that it has been rebuilt 10/14, I don't know by which company.
Things I have done, New cap, Rotor, Plugs. all seemed fine, plugs were rj14yc and the tips looked tan.
I checked for arching wires by spraying them with water and looking for archs at night, none found, wires look fairly new anyway.
I checked timing, its at 8b.
I replaced metal fuel filter with clear one, no dirt observed.
I checked fuel stream going into carb by pumping accelerator linkage and looking into primaries, engine had not been started yet, and I had two strong streams.
I fiilled fuel bowl through fuel vents with carb cleaner, seafoam, and techron while engine running, no change.
I did a smoke test through line from power booster, and I also sprayed intake and all vacuum lines with soapy water while engine was running, no leaks found.
Any help would be appreciated, Thanks, Eric
The car has a 440 with a Carter TQ. It is fairly easy to start, but when its warm it hesitates when I put it in gear and try to take off. I have to pedal the gas to keep from stalling, and she takes off fine. When cruising if I accelerate it will bog then take off, sometimes I hear a slight backfire before she accelerates.
The car was represented as having been collector owned and driven very infrequently. The mileage shows 47000, although I suspect that is not correct.
The engine sounds good, and the car definitely has been maintained.
The TQ has a tag on it which states that it has been rebuilt 10/14, I don't know by which company.
Things I have done, New cap, Rotor, Plugs. all seemed fine, plugs were rj14yc and the tips looked tan.
I checked for arching wires by spraying them with water and looking for archs at night, none found, wires look fairly new anyway.
I checked timing, its at 8b.
I replaced metal fuel filter with clear one, no dirt observed.
I checked fuel stream going into carb by pumping accelerator linkage and looking into primaries, engine had not been started yet, and I had two strong streams.
I fiilled fuel bowl through fuel vents with carb cleaner, seafoam, and techron while engine running, no change.
I did a smoke test through line from power booster, and I also sprayed intake and all vacuum lines with soapy water while engine was running, no leaks found.
Any help would be appreciated, Thanks, Eric