DODGE 92

before installing my injectors i cleaned my fuel lines and after installed my stock injectors back in smoke cut in half but still was missing and smoking so i went to the local mech that checked my injectors he took a pressure test it kept between 4 and 5 psi so that was good after that he said prob was due to worn pump so he check governor the prob was governor switch he gave it a few taps wit hammer and punch NO MORE MISS NO MORE BLUE SMOKE if ever any u guys have same prob and wonder wat is governor pressure switch just ask and ill post a pic i forgot i also took compression they were between 474 and 500 psi i also torqued my injectors at 44ftlbs. i also changed those horseshoe type copper washers on return line i had a leak there HOPE THIS HELPS SOME OTHER BLUE SMOKERS IN HERE

apwatson50

Where is the governor switch?

wannadiesel

I'm not aware of any governor switch. Maybe he was banging on the KSB solenoid?

apwatson50

or the fuel shut of solenoid? I wasn't aware of a governor solenoid either.

DODGE 92

here is wat he punched just a little that adjust the governor thats wat the rebuilt shop told him to do he gave it 2 taps and that did it go in my gallery for pic

Alec

There is a little pressure regulator that controls the internal pump pressure vs engine speed that is inside the pump up there. If it were stuck open, then you would have low internal pump pressure, excessively retarded timing, etc. I wouldn't feel very comfortable about banging on it to un-stick it, but if it works I suppose it might be better than rebuilding the pump

Hopefully it will last for a while. I am surprised that injector cleaner didn't loosen it up.

Thanks for the info!!

DODGE 92

alec he didnt bang on it in the center of that thing there a punch hole it goes down wen you hit with a punch and it stays there its to unstick was your talking about just some little taps on that thing and it goes down about 1/8

Bushy

Ummmm.....he's talking about the littel spool valve on the front of the pump. It regulates the supply side internal pressure. It can be adjusted, but,,,, it needs to be done carefully and in steps....speaking from experience here guys...
They are set accurately when the pump is on a stand.......
If by chance you push it too far down the way to correct it is simple....pull the pump apart and push it thru all the way, then, reinstall it thru the top and go at it again....not fun..

This is one of those adjustments that alters the high pressure sides' operational pressures on a "downstream" basis.

pb....

edit: there is a numerical value assigned to that setting...the most common values range between 2.6 and 3.6 using the pump stands' instrumentation.
What concerns me is the cause of the original need to make that adjustment in the first place. You may find that you'll have the same problem again...or, it may not occur for some time.

DODGE 92

thanks bushy thats wat mech told me if it happens again he will have to rebuilt he said cost would be about 500 so i dont think its too bad he also told me it may not occur for some time if it does it may not be has bad one way or the other its better than it was