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Have a 2000 gmc c6500 with a cat 3126 motor. When I put into
have a 2000 gmc c6500 with a cat 3126 motor . When I put into reverse rpm drops briefly sometimes make ck engine light come on doesn't stay on idle 9000 fast idle on 11,000 runs fine otherwise. ideas … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a boat with 3126 Cats just short of 500 hrs. I
I have a boat with 3126 Cats just short of 500 hrs. I recently had a breakdown with Black smoke and Overheating at same time. Shut down an limped back to marina on 1 engine. There is a Cat mechanic wh… read more
Bradey V
Bradey V
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I am looking for a heavy duty truck mechanic that specify in
i am looking for a heavy duty truck mechanic that specify in caterpillar engine … read more
catmastertech
catmastertech
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Replaced 2 lines.. driver's front rubber lines to caliper
Replaced 2 lines.. driver's front rubber lines to caliper and right rear running to passenger dual. Bled lines repeated, still spongy. Master cylinder was dry. Master cylinder has hydraulic line from … read more
Mike Mcmillan
Mike Mcmillan
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Cat 3126b 450hp 3gs02038 in my boat. Loud knock out of the
Cat 3126b 450hp 3gs02038 in my boat. Loud knock out of the air intake at low rpms. I un-plugged each injector one at a time and it stopped when #6 was in-plugged. I replaced #6 injector and there was … read more
catmastertech
catmastertech
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I have a Cat C 18acert which is only a year old and has been
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Cat Man
Cat Man
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My 2009 gmc topkick is messing up again. we ended up
my 2009 gmc topkick is messing up again. we ended up cleaning the cat and taking it to gm dealer the sent it to a truck shop to have the exaust brake wired and programed. the build sheet by vin said i… read more
Kent Van Wagner
Kent Van Wagner
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07 cummins isx in an international 9200i black smoke and
07 cummins isx in an international 9200i black smoke and soot is coming out of exaust could it be the she valve? Truck has the power … read more
Andy
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Second opinion] I have a 05 gmc C6500 with a C7 motor, Dual
Second opinion] I have a 05 gmc C6500 with a C7 motor … read more
Cat Man
Cat Man
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I have a cat 4160D backhoe engine started smoking and
I have a cat 4160D backhoe engine started smoking and blowing oil out exaust? I have changed injectors … read more
Curtis B.
Curtis B.
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Oil in my coolant. A cat 3054 in a TH83 Telehandler. I have
oil in my coolant. A cat 3054 in a TH83 Telehandler. I have checked the oil cooler for the hydraulic oil and the engine oil. Both pass an air test at 40 psi. Engine runs smooth and starts good. No coo… read more
Curtis B.
Curtis B.
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Water leaking behind the fan hub JA: We'll do all we can to
3126b cat water appear to be coming from around the fan hub assy … read more
Cat Man
Cat Man
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Cat Man What are the specs on oil consumption for 6NZ47912? What is considered normal? What is excessive? Thanks… read more
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I recently inframed a 3406e 2ws engine because of a scored
Hello, i recently inframed a 3406e 2ws engine because of a scored piston and liner. I believe this happened because of wrong trim codes. One injector must of been "hot".. i reset trim codes to 80%. En… read more
Cat Man
Cat Man
Cat Engine Expert
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Hi My name is***** have an issue with a 2001 3126E Cat. It is smoking. I will try to giv
Hi My name is***** have an issue with a 2001 3126E Cat. It is smoking. I will try to give you all necessary information.… read more
Cat Man
Cat Man
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Cat3126 in 1991 gmc c6500...has sat for about 2 months...when
Cat3126 in 2001 gmc c6500...has sat for about 2 months...when I try to start it...the power steering hose gets extremely hot. Any ideas? Im stumped.… read more
Cat Man
Cat Man
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2000 FRTL FL-80 HAS 3126B CAT / 10,000 HRS. / FIRST START
2000 FRTL FL-80 HAS 3126B CAT / 10,000 HRS. / FIRST START UP IN BUILDING AT 50 DEGREES / RUNS ROUGH MISSES AND SMOKE / I HAVE REPLACED 6 INJECTORS , TRANSFER PUMP / AND PRESSURE REGULATOR CK VALVE ON … read more
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Cat Man
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Vocational, Technical or Trade Scho
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2WS Motor 550 Cat, New Injectors - o-rings, new turbo... reman
2WS Motor 550 Cat, New Injectors - o-rings, new turbo... reman head. I am having issues when its sitting idling for a long time 30+ min 1-2 Hours it will blow blue/white smoke after idling for a first… read more
Cat Man
Cat Man
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

10,219 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

Jeremy

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ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

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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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