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:mad2:need help bad

D

duramaxdude

Member
Messages
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Location
Carberry, Manitoa, Canada
My friend has a 1993 k3500 6.5l turbo diesel. This weekend me and him put brand new injectors in it a new injection pump, Lift pump, and OPS sensor.

When you go to start the truck it seems to start OK but the truck has no
power.
hardly any at all. The liftpump puts out 6PSI at Idle. Also the truck will not rev up over 2500 rpm. Is it possible that we couldve maybe skipped a tooth on the injection pump sprocket or is that impossible. We need to get it going because he needs it for work.

Thanks in advance for any help
 
are there any codes? It is nearly impossible to install the IP to the cam wrong because there is the little pin that must go through the hole in the cam. If you didn't get the pin in then IP wouldn't sit flush against the cam housing, thus the truck wouldn't start. There could be some air in the fuel system still.
 
Rodd said:
are there any codes? It is nearly impossible to install the IP to the cam wrong because there is the little pin that must go through the hole in the cam. If you didn't get the pin in then IP wouldn't sit flush against the cam housing, thus the truck wouldn't start. There could be some air in the fuel system still.
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The engine light isnt on. Is it possible to move the sprocket a tooth or so when the pump is out. We had it running for a while I'm sure most of the air would have been out of there by then. It is a 93 so could you hook a scanner up to check the timing of the pump.
 
duramaxdude said:
The engine light isnt on. Is it possible to move the sprocket a tooth or so when the pump is out. We had it running for a while I'm sure most of the air would have been out of there by then. It is a 93 so could you hook a scanner up to check the timing of the pump.
Click to expand...

Computer is only for the trans, only thing off the engine you'll read is throttle position and rpm.

IIRC, the pump gear cant jump a tooth as long as the front cover stayed on.
 
duramaxdude said:
how can you get 13 PSI out of your liftpump. Also the truck should be able to run above 2500 RPM with that amount.
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I dont know, but thats what it runs. Pretty sure its an AC-Delco pump. My gauge is @ the IP feed. My IP feed is machined to 1/4" pipe thread(enstead of 1/4" inverted flare) , filter is 1/4" pipe, 3/8" fuel line, its not restricted.

Yea, it should run past 2500rpm if it has flow. It still has 6psi there also?
 
It dorps down a bit but not under 4PSI. That should still be enough to get it to a higher RPM. Is there a certain way to time the IP or do you just put the pin in the sprocket and line it up with the mark on the block.
 
If it went together without forcing it, it should be right.

Yea, 4psi is plenty.

Where is the pressure gauge attached?

Pull the codes, just jump the "A"&"B" terminals like an old gasser. Wonder if the converter is coming apart loading the engine @ higher rpm's.
 
midniteplowboyy said:
If it went together without forcing it, it should be right.

Yea, 4psi is plenty.

Where is the pressure gauge attached?

Pull the codes, just jump the "A"&"B" terminals like an old gasser. Wonder if the converter is coming apart loading the engine @ higher rpm's.
Click to expand...

The gauge is attached at the fuel filter T handle. The truck is a standered but would there even be codes for a 93.
 
The reason I asked where I got a bad one from an oufit in AZ. They were a poor place to do business cut every corner they could I had a shop test the 2nd one they sent me and they said it looked like a running take off not a rebuilt.
 
Mebby the IP timing is off a bit,are the timing marks lined up?
You could turn the IP a mm or so to the pass side to advance it a bit.

Fuel flow is plenty IMO,but you should measure it at the IP inlet,there is where it counts

Where did the squirts come from,what brand?
Are you sure you did'nt get a IP for a 6.2 instead.
 
I think it was diesel injection services in Pheniox. He also used to be hector with injectors on ebay I think he changed his ebay name becuase of feedback
 
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