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Related Medium and Heavy Trucks Questions
2003 western star with Mercedes motor.customer complains
2003 western star with Mercedes motor.customer complains truck looses power randomly. HE changed tranfer pump primary fuel lines and check valve on the back of head and also changed fuel filters.truck… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
I have a 2000 CAT 3126 that idles @ 70 psi fuel pressure but
I have a 2000 CAT 3126 that idles @ 70 psi fuel pressure but when you come off idle it begins to drop and it will actually go to 0 psi under a load and the engine still runs ok at psi till it eventual… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I've got something that sounds like a fuel issue. I had my
Hi. I've got something that sounds like a fuel issue. I had my B7100 sitting on a slight angle for a few minutes, running just a bit above idle. All the sudden it died. it would start but not go to fu… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
I have c7 cat hook putuer to it I show no fuel pressure
I have c7 cat hook putuer to it I show no fuel pressure while cra king … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Fuel pressure at compucheck jumping around from 50 to 58 psi
fuel pressure at compucheck jumping around from 50 to 58 psi at any rpm … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I got a 2009 c15 sdp19638 When you start it cold kind of
Hi. I got a 2009 c15 sdp19638 When you start it cold kind of runs rough for a little bit and lots of blueish white smoke. Then once truck is warm doesnt smoke at all. Winding what could be causing it.… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
5,115 satisfied customers
I have a 2006 Motorhome with Cat C7 engine. MH broke down
I have a 2006 Motorhome with Cat C7 engine. MH broke down after long trip and it was found to have algae in the fuel tank. Tank was sent out and cleaned and 6 new injectors were installed, just took M… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Mbn c15 no power fuel psi at wot 90 psi at idle 80 psi gauge
Mbn c15 no power fuel psi at wot 90 psi at idle 80 psi gauge bounces … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
Cat C15 mbn prefix.. steel fuel line that runs from the fuel
Cat C15 mbn prefix.. steel fuel line that runs from the fuel transfer pump to secondary filter housing is pulsating and buzzing loud like its restricted or under to much pressure.. Truck is sluggish &… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I'am working on a 1999 CAT 3406E in a freightliner truck,
Hi, I'am working on a 1999 CAT 3406E in a freightliner truck, the truck has been sitting for 4 months and now it will not start. I scanned the engine there are no active fault codes, I'm almost certai… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a dt466e school bus rear engine the motor doesn't
hello I have a dt466e school bus rear engine the motor doesn't have power, what can I do, the fuel pressure is between 40psi and 60psi at idle, when I running it on the road the fuel pressure drops an… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Ron I have a Ford F250 Super Duty 6.4 Diesel. I believe I'm
Hello RonI have a Ford F250 Super Duty 6.4 Diesel. I believe I'm having a fuel issue. When you turn the key to start the truck, it immediately starts and dies. You have to place your foot on the accel… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,947 satisfied customers
I have 01 Volvo with ved 12 engine keeps losing prime even
i have 01 Volvo with ved 12 engine keeps losing prime even running at idle it will lose prime and die you open the bleeder valve and pump the primer and pure fuel comes out you crank on the engine wit… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
There are two spin on fuel filters on my 03 387 my truck is
There are two spin on fuel filters on my 03 387 my truck is sucking air into fuel system. I have a o3 Pete with a 3406e cat. One filter is located below hand pump the other filter is on frame and has … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
3406e, I was driving along truck was running fine. Full of
3406e, I was driving along truck was running fine. Full of fuel,about 90 miles into trip, engine started to sputter, got off road, checked water seperator, little water came out. Took filters off both… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
I have a 6nz c15 cat in a 2002 western star. I loose prime
I have a 6nz c15 cat in a 2002 western star. I loose prime when my tanks are not full. I have changed the steel line from the transfer pump to the filter housing. Changed the filter housing, all fuel … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
this 3116 I have only has 10 lbs of fuel pressure Has a new
this 3116 I have only has 10 lbs of fuel pressure Has a new pump and new filters, inlet lines are good, and not sucking air Is there supposed to be some sort of regulating check in the back of the hea… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
I have a 1995 Peterbilt with a 3406E Cat in it. fuel pressure
I have a 1995 Peterbilt with a 3406E Cat in it. fuel pressure is running 70-75 psi at idle and 95-100 psi under load going down the highway. pressure will randomly drop to 45-50 psi when shifting thro… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,344 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

6,062 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

10,344 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

5,115 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,756 satisfied customers

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

Curtis B.

Curtis B.

Technician

1,947 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,886 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 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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