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Author Topic: 98 Cummins dorkin out  (Read 2822 times)

October 11, 2009, 11:37:11 pm

FoXBoXRaCiNG

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98 Cummins dorkin out
« on: October 11, 2009, 11:37:11 pm »
A buddies truck: 200ish kms, new IP, new fuel tank, added a lift pump to a stock location, no fuel tank vacuuming, free flowing catless stock exhaust, clean air filter, fresh fuel filter, runs and idles fine...

After a couple hundred meters it starts to dork and you lose all power like it's getting the fuel cut off, the more fuel pedal the worse it gets?!?!? All that's listed above has been done try ing to resolve the issue...

Any input anyone?
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Reply #1October 12, 2009, 08:58:50 am

macka

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Re: 98 Cummins dorkin out
« Reply #1 on: October 12, 2009, 08:58:50 am »
is the lift pump restricting flow? Some of the junkie lift pumps can't keep up with the cummins pressure needs.
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Reply #2October 13, 2009, 04:31:20 pm

rabbitman

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Re: 98 Cummins dorkin out
« Reply #2 on: October 13, 2009, 04:31:20 pm »
Definitely sounds like it's not getting enough fuel
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'82 Rabbit, I put on a euro vnt-15, 2.25" DP, 2.5" exhaust, the result.....it whistled.

I removed the turbo, made a toilet bowl 2.5" DP, the result....it was deafening. Now it has a homemade muffler up front and a thrush in the rear, the result.....less loud.
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Reply #3October 14, 2009, 08:51:19 pm

dieselweasel

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Re: 98 Cummins dorkin out
« Reply #3 on: October 14, 2009, 08:51:19 pm »
Yes check the fuel pressure.
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Reply #4October 16, 2009, 05:52:56 pm

Rabbit on Roids

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Re: 98 Cummins dorkin out
« Reply #4 on: October 16, 2009, 05:52:56 pm »
check the fuel suction hose from the tank to see if there are any restrictions. also check all the banjo bolts for cloggs. i had a clogged banjo bolt once and my car would starve for fuel bad.
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Reply #5October 20, 2009, 10:46:11 am

hippiekiller

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Re: 98 Cummins dorkin out
« Reply #5 on: October 20, 2009, 10:46:11 am »
If its a 24V its probably a lift pump, definitely check fuel filter though anyway.....could be gelled allready?
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Reply #6October 22, 2009, 06:47:02 am

topless96

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Re: 98 Cummins dorkin out
« Reply #6 on: October 22, 2009, 06:47:02 am »
My 2001 Cummins will throw a code for behavior like that. Did you read the codes and does it show a CEL.
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