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C15 cat 2005 high pressure pushing fluid out of resavoir
C15 cat 2005 high pressure pushing fluid out of resavoir heating the motor to 200 only does this with a load on and no bubbles in the bottle test … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
17 satisfied customers
Have a c15 cat 2006 using anti frz in oil checked head Buble
Have a c15 cat 2006 using anti frz in oil checked head Buble test r&r pan pressure test can't find leak … read more
NicholasM1019
NicholasM1019
Diesel Technician
Vocational, Technical or Trade School
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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
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Vocational, Technical or Trade School
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I have a C15 cat 05 peterbilt I've lost 5 to 8 lb of oil
I have a C15 cat 05 peterbilt I've lost 5 to 8 lb of oil pressure and can't find it put a new oil sending unit and tried to put a manual gauge to see if it was right can't find the right pass used to … read more
NicholasM1019
NicholasM1019
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Vocational, Technical or Trade School
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Not a truck, a boat, it has a 12ltr cat engine, just had a
not a truck, a boat, it has a 12ltr cat engine, just had a new head, engine has not been started yet, because the coolant seems to finding its way into the sump. about 3 gallons in a day … read more
NicholasM1019
NicholasM1019
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Vocational, Technical or Trade School
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9400i cat c15 overheating new thermostat and sensor
9400i cat c15 overheating new thermostat and sensor sometimes it get hot empty and you can raditor cap off and no pressure on it so i dont know whats the problem … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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1999 c-15 6nz cat engine with 100k on a rebuild. My question
1999 c-15 6nz cat engine with 100k on a rebuild. My question is with oil flow in head. I just ran the over head and at 1100 rpm with valve cover removed hardly any oil seems to be splashing around. I … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,291 satisfied customers
I have a cat C15 6NZ it has an intermittent noise coming
I have a cat C15 6NZ it has an intermittent noise coming from secondary filter base when the noise accuses the fuel Presure drops about 4 lbs ? … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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2005 Cat C7 Getting fuel in oil. Resealed and tested
2005 Cat C7 Getting fuel in oil. Resealed and tested injectors. Put dye in fuel filter ran a while check top end took of valve cover found no dye. Pulled fuel pump and hpop pump and look for leak. I't… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Sequence for replacement of cylinder head gasket c15 cat
Sequence for replacement of cylinder head gasket c15 cat nxso5571. Torq spec.s over head adjustment. Jake adjustment. Reason for replacement anti freeze in oil no pressure in cooling system with bottl… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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C15 Cat in a 4900 Western Star losing 2to3 gallons coolant
C15 Cat in a 4900 Western Star losing 2to3 gallons coolant per day. No visible leaks, exhaust not white,not skipping,not blowing out overflow. Help me.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
How did I get water in oil on a cat 6nz. I have to go look
how did I get water in oil on a cat 6nz JA: What is the complete model and serial number of your machine? Customer: i have to go look it up give me a min JA: Are you fixing this yourself? What have yo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a two part question on my Cat C13 SN: KCB81769. 1. I
I have a two part question on my Cat C13 SN: KCB81769.1. I recently started getting oil into the coolant reservoir so we replaced the oil cooler and water pump. The system was flushed a few times and … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,291 satisfied customers
I have a 2011 peterbilt with c15 cat it's losing coolant
I have a 2011 peterbilt with c15 cat it's losing coolant about 1 gallon per 100 miles it has no leaks it's not getting in the oil and not smoking … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,291 satisfied customers
Cat man, 2002 international with C15 have to add some
Cat man, 2002 international with C15 have to add some coolant every so often , can not find external leaks. Engine oil is fine. Where else to check. Also, water drips off the blow by hose and it has m… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,291 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
10,291 satisfied customers
I noticed on my 3406E cat out of the breather thick oil with
I noticed on my 3406E cat out of the breather thick oil with whitish stuff coming out.the coolant in the reservoir is also thick and the reservoir cap has a white substance forming on it.Has oil mixed… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,291 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
5,454 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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