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I have a c15 cat 6nz I'm getting back pressure at the
I have a c15 cat 6nz I'm getting back pressure at the coolant reservoir tank … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
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
Field service technician
Vocational, Technical or Trade Scho
1,297 satisfied customers
CATMAN does the 6TS Engine 3406. does it come with that oil
CATMAN does the 6TS Engine 3406. does it come with that oil seal on the left rear of the engine. between head and block? the one that goes through the spacer plate.? looks like a weird shape rectangle… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
I have a C15 6NZ no start. Getting fuel with pressure.
I have a C15 6NZ no start. Getting fuel with pressure. Checked with Cat ET and no codes. R&RAY primary and secondary engine speed timing sensors. Both were sized to wiring harness. Saved secondary wir… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
I have a 3306 c (9TL1) cat engine in a dump truck. Head
I have a 3306 c (9TL1) cat engine in a dump truck. Head gasket blew at fire ring back in feburary replaced at that time. When I replaced I checked very thourally the liner protrusion and followed cat … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
Mr. Cat Man, Can you tell me when it is necessary to use an
Mr. Cat Man, Can you tell me when it is necessary to use an undersizer spacer plate on a c15 engine. I have two different accert engines with reoccuring head gasket problems. Both of these engine have… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
Cat 6nz had block redone deck been machined new cat liners
cat 6nz had block redone deck been machined new cat liners new cat deck plate but all 6 liners below deck plate block cut and new sleeves put in top for seal ring then machined my only thoughts is lin… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
Cat Man, I have a 2002 KW with a Cat... I can't find the ESN
Cat Man, I have a 2002 KW with a Cat... I can't find the ESN on it but I assume its a 6nz. When we start the truck after about 2 seconds with the radiator cap off coolant shoots up and out of the tank… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
I have a 2009 peterbilt,it is wanting to build pressure in
I have a 2009 peterbilt,it is wanting to build pressure in the overflow tank.I changed the radiator cap,the hose between the radiator and reservoir is not plugged,I bypassed the precooler between the … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
Catman i have a 6nz and the coolant is pressurizing. There
catman i have a 6nz and the coolant is pressurizing. There are no typical signs of head gasket failure, no water in oil, oil in water, no external leaks, no white at exhaust joints, no hydrolocking do… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
Hello - I replaced one injector in my Cat C15 6nz and now it idles rough but I am still ge
Hello - I replaced one injector in my Cat C15 6nz and now it idles rough but I am still getting 25 - 30 lbs manifold pressure and power is good. Also my air compressor has a blown head gasket does tha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
I have a 2002 6NZ 550 CAT put new head on it 2 months ago newer oil co
I have a 2002 6NZ 550 CAT put new head on it 2 months ago newer oil cooler and air compressor. I have run it 30000 miles last week it started puffing steam out of dipstick. No antifreeze in oil. I als… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
catman I have a 6nz with a crank out of a spd maybe its a newer
catman I have a 6nz with a crank out of a spd maybe its a newer emmision motor. I have had trouble with it in the past blowing head gaskets. I took the tuned exhuast off and cut back the injectors and… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
Hi Ive got a cat c15 6nz 28000 hrs , been great , just started
Hi I've got a cat c15 6nz 28000 hrs , been great , just started to be slower to start and a bit of pressure through to rad causing the rad to over flow , the coolant is agitated with air or combustion… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
2003 cat 6nz has 130000 miles on total overhaul and I have
2003 cat 6nz has 130000 miles on total overhaul and I have never been able to get it run warm uasually runs round 170 degrees I have changed thermostats to 190 degree and couple days ago it was pullin… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
I have an 07 kw w900 with cats latest model motor the c15
I have an 07 kw w900 with cat's latest model motor the c15 475 6nz with the twin turbo and automatic regeneration system. It appears to have an increase of crankcase pressure due to it seemingly tryin… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
Have a c15 6nz rebuilt 1 month ago because putting antifreeze
Have a c15 6nz rebuilt 1 month ago because putting antifreeze in base around bottom of #2 liner because o rings bad. Liner protusion good and block deck good, first rebuild. After 3 weeks starting put… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
Hi i got 03 peterbilt with cat c15 6nz serial number had oil
Hi i got 03 peterbilt with cat c15 6nz serial number had oil in coolant changed water pump and thermostat by than we saw oil cooler is dirty so i changed that to after 2 weeks i see again little oil i… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,012 satisfied customers
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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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