Medium and Heavy Trucks

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Cat Man, I'm having an issue with a 2002 6nz where I'm
Hello Cat Man,I'm having an issue with a 2002 6nz where I'm losing quite a bit of coolant throughout a days worth of work (350 miles)… read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
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Have c15 9nz coolant is pressurising back out the radiator
Have c15 9nz coolant is pressurising back out the radiator cap blowing plenty of white smoke and missing … read more
james Roberts
james Roberts
Maintenance assistant
Vocational, Technical or Trade School
3 satisfied customers
1995 International 4900 DT 466 Vin# ***************** It has
1995 International 4900 DT 466 Vin# ***** It has a lot of coolant in the oil. It's almost half way up the stick so that's probably about 4 gallons too much on the stick. I pressurized the coolant syst… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
We have a 6nz c15 caterpillar in the shop we rebuilt it
We have a 6nz c15 caterpillar in the shop we rebuilt it because it gaulded a piston. But when we had it apart we found the front cam bearing spun. We cleaned cam etc and put a new head in it. We start… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 satisfied customers
Got a problem with a c15 6nz. Engine was rebuilt couple
Got a problem with a c15 6nz. Engine was rebuilt couple years ago. Came in with the coolant milky. Full of oil. So we did the cooler and flushed the system. Now came back in after about 20,000km coola… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 satisfied customers
Catman 6nz rebuilt using cat parts and head on 3/2017..
catman 6nz rebuilt using cat parts and head on 3/2017.. yesterday going down the road, gave no signs, engine started making a clanking noise and smoked like a freight train light grey color... egine c… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 satisfied customers
PLEASE READ MY POST THOROUGHLY BEFORE RESPONDING AND ANSWER
Hello, PLEASE READ MY POST THOROUGHLY BEFORE RESPONDING AND ANSWER THE QUESTIONS IN YOUR FIRST REPLY!: I am a professional technician and just finished an in-frame rebuild (all new liners, pistons/rin… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
Catman I have a couple motors we have done inframes on or
catman I have a couple motors we have done inframes on or upper ends and we seem to blow head gaskets within a year or less. We measure liner protrusion. The one is a 6nz and it is was turned up a bit… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 satisfied customers
Catman I have a 6nz cat and it seems to be pushing coolant.
catman I have a 6nz cat and it seems to be pushing coolant. I just pressure tested it and it reached 19psi. It took a while to get there so I am assuming the air compressor is not the culprit. we have… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 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
10,288 satisfied customers
My 2007 Freightliner century detroit 60 is building pressure
My 2007 Freightliner century detroit 60 is building pressure in the coolant system. The mechanic changed the air compressor but it still does it. It put a hole in the coolant reservoir, bust a bunch o… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,747 satisfied customers
catman I have a 6nz that was making some mechanical noises.
catman I have a 6nz that was making some mechanical noises. We pulled the valve covers and cyl Number 2 exhaust rocker was broken. I replaced that and gapped it. Now when it run it there is a ton of b… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 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
10,288 satisfied customers
I want to put a 6nz engine in a 1981 Peterbilt that has an
I want to put a 6nz engine in a 1981 Peterbilt that has an A model cat engine in it Would you happen to know how much difference there is in the mounting brackets… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 satisfied customers
catman when guys take a newer accert motor c15 and change the
catman when guys take a newer accert motor c15 and change the ecm back to a 70 pin pre accert and change the turbo and all that. The ivas don't hold the intakes open and the compression is increased t… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 satisfied customers
Cat c15 6nz rebuild kit: Keeps blowing fire rings around exhuast valve
Catman I have a 6nz that I put a bxs crank and a rebuild kit for it, a bxs in. It has been running good but the head gasket won't stay in it. I keep blowing or burning the fire rings around the exhaus… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 satisfied customers
I have a 6NZ and blowing blue smoke, we have changed the #4
I have a 6NZ and blowing blue smoke, we have changed the #4 injector, we did change this injector because of performing a cut out test on each cylinder. After replacing the injector setting the valves… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,288 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
10,288 satisfied customers
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