hesitation on take off - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 4 (permalink) Old 12-06-2010, 01:21 AM Thread Starter
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hesitation on take off

I have a friend who has a 1993 2500 dodge, bone stock 12 valve with 80,000 miles. He said it just started to hesitate on take off, once the truck gets moving it runs just fine. It is worse when pulling his 5th wheel. It does not burn oil, and the engine does not rev up to indicate the transmission is slipping. Would anybody have any suggestions, he is a retired man and takes good cares of his vehicles. I just dont want him to take it somewhere and be ripped off at times like these. Thanx

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post #2 of 4 (permalink) Old 12-06-2010, 02:21 AM
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The first thing you want to do is, I take it you have a p7100 Bosch pump, the return line comes of the Injection pump at the front inside trace it back to a place you can get to the hose. With the truck idling, take a pair of pliers and squeeze the return hose, you should hear the transfer pump rattling, then release the pliers. that will flush out the preasure regulator check valve. If you have access to a fuel preasure gauge check it, also the air filter and change the fuel filter. Just a thought!

1988 ford van fresh overhaul, 1991 nissan pick-up 1993 Caprice 2000 GMC S10 Blaser 2007 nbs 3500 GMC 4x4 crew-cab long box 17 inch single wheels Duramax Alison. BW turnover Ball. Furakawa FL35 loader. Retired, HD mechanic, worked on engines all my life. Fabricator welder. electrician. in the process of finishing my new shop. Live in Rock Creek B.C. Wife has a fruit stand.
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post #3 of 4 (permalink) Old 12-06-2010, 02:37 AM Thread Starter
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I am not sure what pump he has, he said it was a round pump instead of the inline pump. i will check with him to be sure. I know he has never had a problem with this truck or had anything replaced except for regualar maintenance

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post #4 of 4 (permalink) Old 12-06-2010, 06:48 PM
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if its a 93 it has the rotary VE pump. I would check the Fuel filter, alot of times they are neglected.

1992 W250-P-pump and some extra air, gone, but not forgotten.

2003 SVT Cobra

1984 Chevy K10

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