Medium and Heavy Trucks

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My truck is cranking but not starting. We believe the spark
we believe the spark plugs are working because it'll start with starting fluid but won't stay on. We checked all the fuses and relays and they're all intact. We did change the fuel pump and it didn't help … read more
Chris (aka-Moose)
Chris (aka-Moose)
Technician
Vocational, Technical or Trade School
353 satisfied customers
Jcb backhoe loader wont stay running. I will have to go and
I will have to go and retrieve that info take about ten minutes … read more
Curtis B.
Curtis B.
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Associate Degree
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Have Volvo bl60 backhoe blew a line on backhoe fixed it
Have Volvo bl60 backhoe blew a line on backhoe fixed it backhoe works fine now loader doesn't respond at all … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
06 Freightliner C7. Takes a time to start when cranking.
takes a long time to start when cranking. Most times wont start on first cycle. Turn key off and restart. Kinda chugs to life. Other times starts right up. Only when sitting overnight. During day will usually will start in 3 or 4 seconds of cranking. Also has intermittent skip. Happens at all times. Hot or cold. Engine sound will change, runs like that for a while then changes again. Has a definite miss or skip. Under load can feel it when letting off throttle or getting on it. Feels smooth under steady acceleration. No Check engine light. Hooked up to ET and no codes. … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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Starts perfect when cold but needs an extra cycle to start
Starts perfect when cold but needs an extra cycle to start after sitting an hour. It runs perfectly, full power and all. If I shut it off and start with 5 min it's fine. … read more
Chris (aka-Moose)
Chris (aka-Moose)
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Vocational, Technical or Trade School
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I have a 3126 in o2 FL70 dump truck 7 yarder. Lately I have
I have a 3126 in o2 FL70 dump truck 7 yarder. Lately I have to crank the engine longer for it to start like 15 to 25 seconds. Battery ate good and I plug it in on over night for it to trickle charge. … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I got a 416C caterpillar backhoe, it starts fine in the
i got a 416C caterpillar backhoe, it starts fine in the mornings, only one time, if i close the key and try to restart it, it wont start the second time … read more
catmastertech
catmastertech
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Vocational, Technical or Trade Scho
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C15 in a Kenworth SAR T404 it blew a the 1inch hose going to
C15 in a Kenworth SAR T404 it blew a the 1inch hose going to header tank and because none of the temp gauges or sensors worked at the time I'm uncertain of how hot she got. The mechanic (poor excuse f… read more
Curtis B.
Curtis B.
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Associate Degree
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I have an 2008 Sterling MBE 4000 that wont start on the
Hi. I have an 2008 Sterling MBE 4000 that wont start on the first crank attempt. ive been all over this vehicle and what Im experiencing is no injector pulse on the first attempt to start. let off the… read more
Daniel Wilson
Daniel Wilson
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My Cummins ISX motor is causing a problem. I get an engine
My Cummins ISX motor is causing a problem. I get an engine warning light that comes on and it'll go on and off intermittently period occasionally it will shut the turbo off completely or at least it w… read more
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I have a t190 Bob Cat and it cranks fine and then after
I have a t190 Bob Cat and it cranks fine and then after about 5 to 25 seconds it shuts down. This is the first time this has happened and I have tried everything that I know and it will not stay crank… read more
DDG
DDG
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Associate Degree
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2009 60 series Detroit. Changed filters, primed filter, wont
2009 60 series Detroit. Changed filters, primed filter, wont start. No codes, no smoke. Manually pumped fuel through the system until fuel returned from the head. Still no smoke.… read more
spankyjr1
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Ford LCF: Hi, I am hoping someone can help me with our 2006
Hi, I am hoping someone can help me with our 2006 Ford LCF. When you start it up it takes roughly 7-12 seconds to start. It was put in the Ford shop and they could not figure out what was causing this… read more
Matt
Matt
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Bachelor's Degree
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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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07 pete with c13 wont start gauge shows no oil press. how can I test sensor before throwing 150 bucks at it for new one?… read more
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I have a 2001 isc cummins engine in a freightliner chassis
I have a 2001 isc cummins engine in a freightliner chassis that misses at 1600 rpm and when you apply alot of gas pedal, even in neutral… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
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Hey andy hows it going , you helped me out befor and im looking
Hey andy hows it going , you helped me out befor and im looking for help again. I have a 2007 international 3200 limo bus with a long crank time in morning when its cold. Some times it takes 3-5 mins … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
My ken worth take more fuel and loose power after valve set
My ken worth take more fuel and loose power after valve set .it is 2006 c15 with 1.2 million kilometre.it has 3.55 ratio with 13 speed tyranny. i pull gross weight not more than 50,000 to 60,000 lbs a… read more
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Steve
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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

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

14,892 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

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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