randy
Registered User
Is there anyone who has tried to take a 7.3 injector pump apart to see if the metering rod is stuck? how hard can it be???
takeing injector pump apart
- Thread starter randy
- Start date
It is nuts, bolts and a lot of small springs, shims and washers with precise fits and clearances. The magic of pump building becomes apparent when the pump is reassembled and the settings must be calibrated. I don't know of any way to do this without a flow or test bench.
I suppose you could keep impeccable notes during the disassembly process pertaining to how many turns you rotated the associated adjustments...still, it is a crap shoot and you would have no imperical data as to whether or not your pump is developing the proper flow rates and pressures.
If you get it back together and the engine starts and runs well then you were mostly successful.
I suppose you could keep impeccable notes during the disassembly process pertaining to how many turns you rotated the associated adjustments...still, it is a crap shoot and you would have no imperical data as to whether or not your pump is developing the proper flow rates and pressures.
If you get it back together and the engine starts and runs well then you were mostly successful.
riotwarrior
Full Access Member
check with Mel at www.conestogadiesel.com I'm sure he can answer that question...PM him he goes by Agnem
79jasper
Chickenhawk
Not to mention, a single spec of dirt could ruin the whole pump......
texcl
Full Access Member
I re sealed a vw injector pump, it was very nerve wracking not really knowing what I was doing. I marked parts where they lined up so I could put them back that way. It worked and savedme a ton of money. the worse thing that could have happened is havimg to have it professionally redone. good luck!
gandalf
Senior Member
Taking an injector pump apart isn't too bad. Putting it back together so that it runs? Now that is a real *****!!!
You will want to try this just after you order a new IP, so that your truck won't be down too long. Be sure to take lots of pictures for us.
Ugly Moosling
Full Access Member
The only disassembly required to check for a stuck metering valve is removing the governor cover. The question then becomes why was the valve stuck (if indeed it was). It is usually indicative of a fuel contamination issue or other problems. Sometimes you can get away with freeing a stuck valve reinstalling the governor cover/solenoid (carefully and properly) and you're good to go for awhile. Usually it's not the case and you need to go deeper.
Trust me, that's not the worst that could have happened... If you screw something up you can spend 3 times what it would've cost to just have it rebuilt/exchanged in the first place. I'm not saying don't try it, I'm just saying think it over and be very, very careful. I'd rather see you stop halfway and take it to a shop in a box, than seize a head or have your engine run away.
Trust me, that's not the worst that could have happened... If you screw something up you can spend 3 times what it would've cost to just have it rebuilt/exchanged in the first place. I'm not saying don't try it, I'm just saying think it over and be very, very careful. I'd rather see you stop halfway and take it to a shop in a box, than seize a head or have your engine run away.
jaluhn83
Full Access Member
Moreover than that, it's possible to screw up and cause a runaway engine......
I've done pump work on Bosch rotary pumps and it's not that difficult, just requires a very high degree of attention to detail and finesse along with a certain amount of guess and pray for settings. The bosch pumps have fewer adjustments to mess up though.
Also as mentioned, you need to be surgically clean if you do internal pump work.
Not saying it couldn't be done, but I certainly wouldn't mess with the pump on an engine I cared too much about. For a ranch/farm truck that never really goes anywhere sure, but not for a daily driver.
I've done pump work on Bosch rotary pumps and it's not that difficult, just requires a very high degree of attention to detail and finesse along with a certain amount of guess and pray for settings. The bosch pumps have fewer adjustments to mess up though.
Also as mentioned, you need to be surgically clean if you do internal pump work.
Not saying it couldn't be done, but I certainly wouldn't mess with the pump on an engine I cared too much about. For a ranch/farm truck that never really goes anywhere sure, but not for a daily driver.
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