Head Scratcher

R

ReinBinder

New member
Lets start with the specs: I have a 1970 800a with the 232 i6, 3sp trans 4wd. Binder ran great when I took it into our local IH dealership to have some seals and gaskets changed. While there, mechanic diagnosed fuel pump issues, installed electric fuel pump. He replaced seals and gaskets as requested. Now, as I drive the vehicle, it is losing power and stumbling under acceleration. Idles fine and fires up like normal. As I increase throttle it charges forward until about halfway through the throttle range, then no more go juice. I am assuming it is either timing or fuel. My thought is fuel filter clogged and only so much fuel getting to the system or something to do with the vacuum advanced timing on the distributor? I have a very limited knowledge of these machines and am not quite sure where to start. Any thoughts or pointers in the right direction?

Thanks
 
What seals and gaskets were changed? Normally a low fuel delivery rate will show up when driving up hill when a lot of fuel is needed.
 
Oil pan seal and transfer case seal. I think it has to be something with this new fuel pump he added...it's the only part of the equation that was changed. He didn't mess with the electrical system at all.
 
Mechanic said that in order to install mechanical pump he would need a new cam b/c the lobe had been worn off and if he was going to do a new cam we might as well overhaul the motor. At this point, I was like just put a pump on it and get her running. Starting to wonder if I should have brought it home and done it myself.
 
Isn't the fuel pump driven by a "lobe" bolted to the cam gear? Seems that would have been fairly easy to replace.
 
Codeman the i6 is a lobe near the middle of the cam. I'd start by pulling the fuel line at the carb, put the end of the line in a can and turn on the ignition for 10 seconds and see how much fuel you get.

You know if the thing ran great when it went to the shop something is fishy here. Hook the stock pump back up and see if it runs great again. There is a lever on the pump or a push rod that rides on the cam. Inspect the end of that for roughness. If it's smooth the cam is not messed up.
 
My bad, chappie!!! I've been pulling down a 304 and had sv's on my mind. I guess I looked right past the op's engine spec. Sorry, guys!!
 
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