Odd hesitation

[350runner]

Haaaa!

Sent from the dust in front of you!

 

[Boone83K10]

You must be registered for see images attach

 

[350runner]

You must be registered for see images attach

Sent from the dust in front of you!

 

[yeol1]

Cat as in catalytic converter. You shouldn't have one on a 73 but since the PO did an engine swap it wouldn't hurt to check.
Also check the gaskets for the fuel pump if you have a mechanical fuel pump. My truck would have a similar issue because it would blow out the gasket on the fuel pump. It would idle fine but when I gave it gas it would suck more air the gas and bog down and die

 

[73K20]

My trans is new just put in. It was getting around 12mpg and the worse the problem got the worse my mileage seemed to get and my test drive last night was maybe 15 miles and it drank almost a quarter tank.

Anyone think a coil could give these symptoms?


1993 F250 3k in the 460-my 1st truck
1973 K20 6" lift-bright future
1967 F250 2x4-diesel swap in its future

 

[73K20]

Oh and no cat


1993 F250 3k in the 460-my 1st truck
1973 K20 6" lift-bright future
1967 F250 2x4-diesel swap in its future

 

[350runner]

Trans fluid level?

Sent from the dust in front of you!

 

[73K20]

It's full and all new


1993 F250 3k in the 460-my 1st truck
1973 K20 6" lift-bright future
1967 F250 2x4-diesel swap in its future

 

[350runner]

Good. Where is your timing set at and are you using vac advance?

Sent from the dust in front of you!

 

[73K20]

Good. Where is your timing set at and are you using vac advance?

Sent from the dust in front of you!

Timing no clue. Where it's been since it ran perfect havnt touched it. Just replaced the coil, the readings on the old one were off a bit. Helped alittle, drivable but still not better


1993 F250 3k in the 460-my 1st truck
1973 K20 6" lift-bright future
1967 F250 2x4-diesel swap in its future

 

[73K20]

Any chance it's a lifter sticking?


1993 F250 3k in the 460-my 1st truck
1973 K20 6" lift-bright future
1967 F250 2x4-diesel swap in its future

 

[350runner]

Lifter sticking would run real bad. I'd start with the timing. Try removing the vac advance hose and plug it then go for a drive.

Sent from the dust in front of you!

 

[73K20]

Ok it started doing it really bad again. plugged the vac advance gonna try and drive it again.


1993 F250 3k in the 460-my 1st truck
1973 K20 6" lift-bright future
1967 F250 2x4-diesel swap in its future

 

[73K20]

Same thing started bogging down about 40 in 2nd. Up to 3rd. Difference this time was if I kept my foot in the gas a bit I could still speed up slowly. Before I lost all power completely.
Evens out about 60 and now on the freeway it stopped bogging down. Very intermittent.


1993 F250 3k in the 460-my 1st truck
1973 K20 6" lift-bright future
1967 F250 2x4-diesel swap in its future

 

[350runner]

Timing gun you should check the timing

Sent from the dust in front of you!