Ford 4600 sudiesel runs poorly

janc · Mar 19, 2015

I am helping work on a mid 70s Ford 4600 diesel that runs very poorly. It is hard starting, when it does start, it smokes bad, clouds of raw diesel smoke, runs rough and never really clears up, even when warm, really obnoxious to drive or be around.
On the other hand it appears to have good compression, very little to no blow by, and uses no oil, anyone work on one of these or have any ideas?

Thanks
janc

sunbeam · Mar 19, 2015

Have the injectors checked

Bern · Mar 19, 2015

Check injectors. I would also suspect an inoperative advance mechanism on the injection pump.

FordTractorMan · Mar 20, 2015

Sounds like pump and injectors need to be checked out. Had a similar problem w/my 9600 years ago. Wouldn't start and had no power. Pump and injector rebuild brought it back to life.

souNdguy · Mar 20, 2015

Do make sure the air filter is not plugged and make sure it is
dumping return fuel back to the tank too.

sotxbill · Mar 22, 2015

pin hole block will do that as well... obnoxious and burn the crap out of the eyes... lots of white smoke, not black...

janc · Mar 23, 2015

I ordered a set of injectors, I hate to just start replacing parts to try and fix a problem, but in this case by the time I got done with fooling around with getting them tested etc. I might as well just try a set of new ones. Will check out the other suggestions as well and report back after installing the injectors.

Thanks janc

Ford 4600 sudiesel runs poorly

janc

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sunbeam

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Bern

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souNdguy

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sotxbill

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janc

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