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1980 6v92 losing primewhile runningand sitting. 6v92 losing
Fill filters and it will run but have to keep revs up and smokes white … read more
Curtis B.
Curtis B.
Technician
Associate Degree
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My cat 3126 won't start. It's a 2001 gmc t series truck with
It's a 2001 gmc t series truck with a cat 3126 engine … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
I have a 99 Freightliner FL 80 with a cat 3126. It is acting
Hi, I have a 99 Freightliner FL 80 with a cat 3126. It is acting like it is running out of fuel. I have replaced the filter, and have checked it several times. One time, the filter was only half full.… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
784 satisfied customers
I have a 1998 gmc top kick with a cat 3126 motor will not
I have a 1998 gmc top kick with a cat 3126 motor will not start unless I manually prime then runs and stalls after the primed fuel runs out sometimes stays running driving tell you take a corner or go… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
784 satisfied customers
Have a 06 freight liner with cat 3126 won't start in am unless
Have a 06 freight liner with cat 3126 won't start in am unless using starting fluid with wd40 replaced pickup pump checked all lines no visible leaks losing prime somehow runs fine after it starts… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
I have a 2000 GMC c8500 with a 3126 cat I can hand pump the
I have a 2000 GMC c8500 with a 3126 cat I can hand pump the primer and it will run then cut off check the filter and its almost empty… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
I have a 3126 cat that I can pump up fuel pressure with hand
I have a 3126 cat that I can pump up fuel pressure with hand primer pump but will lose pressure if it is running or not?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
We have a 2003 Freightliner FL80 w/ CAT 3126. It has been
We have a 2003 Freightliner FL80 w/ CAT 3126. It has been having an intermittent sputtering or cutting out problem when seeing a load. It doesn't throw any codes for this. Dealer changed fuel pressure… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
Cat Man; I have a 1999 38 Ft RV, with a 1998 3126 Caterpiller
Cat Man; I have a 1999 38 Ft RV, with a 1998 3126 Caterpiller diesel pusher. The Serial # XXXXX XXXXX & the Family # XXXXX XXXXX The problem is it will not start. I run the engine every month during t… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
Hi Cat Man, Iam working on a 1999 Peterbilt 379 with a 3406E
Hi Cat Man, I'am working on a 1999 Peterbilt 379 with a 3406E CAT in it, after sitting for a couple of days it will start up right away like usual but after about 10 seconds it will stall out.To get i… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
I have a 2000 Chevy C6500 with a Cat 3126. It will fire right
I have a 2000 Chevy C6500 with a Cat 3126. It will fire right up after I shut it off naturally, even after sitting overnight. However, when I drive it around after a few minutes it just shuts off afte… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
I have a Cat 936f loader. The fuel system will not stay charged,
I have a Cat 936f loader. The fuel system will not stay charged, If the loader is stopped for more then a coulpe minutes it will not start. I remove the Primary filter and it's almost empty. But the s… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
I have a 2005 chevy kodiac 7500 dump truck with an auto. transmission.
I have a 2005 chevy kodiac 7500 dump truck with an auto. transmission. The engine is a Cat. C7 #3126. One of my workers ran the truck out of fuel and I can not get it started. I have fuel at the water… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
2006 international 9400i with Cat C15 (MXS83461) Have to bleed
2006 international 9400i with Cat C15 (MXS83461) Have to bleed fuel system just about every time to start. Runs great all day but burps and farts on start up if not bled.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
Have 2002 gmc truck model c7500 with cat 3126. It runs for
Have 2002 gmc truck model c7500 with cat 3126. It runs for ten minutes and runs out of fuel. Have to fill fuel filter and blead air and runs for ten minutes again.Have changed fuel filter and replaced… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
HI, I have a 2010 Peterbilt with a Paccarr mx engine. The
HI, I have a 2010 Peterbilt with a Paccarr mx engine. The problem I am having is, there is a no start after a few days of sitting over night, say like a weekend. I let the pick up pump cycle, then it … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
i have a 2002 Caterpillar engine model 3126 in a motorhome,
i have a 2002 Caterpillar engine model 3126 in a motorhome, how do i drain air in fuel line, or prime it?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
I am still having problems with my 3126 losing prime where
I am still having problems with my 3126 losing prime where is the lift pump located on the huie pump and do you have a picture of it. Is it hard to replace? I have a 02 6500 with a 3126 cat engine… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,510 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

2,803 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

9,510 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

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worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

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cumminsdr

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Curtis B.

Curtis B.

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dieseldan55

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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