Login|Contact Us
Question and Answer

Heavy Equipment

Ask a Heavy Equipment Question, Get an Answer ASAP!

  • Ask A Question
  • Browse Answers
  • Meet The Experts
  • How JustAnswer Works

oil pressure..idle pressure go up at high rpm have manual gauge..block

 
FIX-IT's Avatar
  • Answered by:FIX-IT
  • Technician
  • Positive Feedback: 94.3 %
  • Accepted Answers: 756
Verified Expert
in Heavy Equipment

Recent Feedback

Positive
Made alot of sense. Will check out. Thanks.
Positive
My question was answered and thank you. But, I am not totally satisfied.
Positive
Than you
Positive
I'm not sure if I can fix the problem , as
Positive
Helpful
Positive
answer was very fast thanks again for you help
Positive
i would have never found it. thanks.
Positive
Got the truck out of the bush, saved alot of money, will certainly use your...
Positive
Thanks for the info, I will let you know if I track down the problem.
Positive
Thanks for your help, I totally appreciate it.

Customer Question

Have Detroit just did inframe oil pressure lowe change relief valve pressure down to 7psi hot at idle pressure go up at high rpm have manual gauge in block to compair to dash engine has jakes on it

 

Optional Information:
Make: peterbuilt
Model: 379
Year: 1997
Engine: Detroit

Already Tried:
changed releaf valve & oil pump change oil filters

Submitted: 564 days and 16 hours ago.
Category: Heavy Equipment
Value: $38
Status: CLOSED

Accepted Answer

Picture
Expert:  FIX-IT replied564 days and 16 hours ago.

Hello and welcome to just answer.i can help you with this..

Improper Lubricating Oil Viscosiy, Lubricating Oil Diluted With Fuel Oil or Engine Coolant
2.4 Faulty Oil Pressure Gauge Sensor
2.5 Oil Pressure Gauge Line Obstructed
2.6 Rocker Arm Shaft Plugs Missing (New or Rebuilt Engines Only)
2.7 Restricted Oil Cooler
2.8 Nonfunctional or Sticking Oil Pressure Regulator Valve
2.9 Defective Bypass Valve
2.10 Defective Pressure Relief Valve
2.11 Defective Pickup Screen Tube and Screen Assembly
2.12 Defective Crankshaft Main Bearing Shells
2.13 Defective Oil Pump Assembly
2.14 Detecting Internal Fuel Leaks
here are your possibilities,let me know if you have anymore questions.

FIX-IT40879.2300607639

Expert TypeTechnician
Category: Heavy Equipment
Pos. Feedback: 94.3 %
Accepts: 756
Answered: 12/2/2011

Experience: ENGINES-ELECTRICAL

Ask this Expert a Question >
Customer replied564 days and 16 hours ago.

replaced mains &replaced bypass & relief valve replaced oil pump no fuel in oil can you ck oil cooler on truck

 
Tweet

7 Technicians are Online Right Now

Ask Your Question Now
Heavy Equipment Questions Date Submitted
I have 4900 Massey tractor with a VT903 Cummins. What is the 5/12/2013
Cat Man: I was wondering if you knew what Heavy Equipment 3/29/2013
Hello. I have a Komatsu D-20A Dozer. Late last fall starting 2/4/2013
I'm thinking about buying 1993 70' hi ranger but the upper 11/21/2012
Good day, my name isXXXXX and I am the HSE Manager 7/16/2012
i build scale models and am looking for blue prints of heavy 5/24/2012
I am considering the purchase of a 2004 boat with a single 4/29/2012
Getting water leaking into the oil when water is above the level 4/27/2012
How do you change the hydralic hoses on a 1977 John Deere 410D 4/25/2012
perkins..timing is set up had injectors chekedhas good fuel preasure 4/12/2012
RSS
Next 10 >
Ask A Technician
Type Your Heavy Equipment Question Here...
characters left:

Top Heavy Equipment Experts

See More Technicians

In The News

Nbc
Washington Post
New York Times
Cnn
Learn More

How It Works

  • Ask an Expert
  • Get a Professional Answer
  • Ask Followup Questions
  • 100% Satisfaction Guarantee
Learn More

Ask a Technician

Get a Professional Answer. 100% Satisfaction Guaranteed.
204 Technicians are Online Now
Type Your Heavy Equipment Question Here...
characters left:
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.
Truste
Contact Us | Terms of Service | Privacy & Security | About Us | Our Network
© 2003-2013 JustAnswer LLC
  • Pearl.com
  • JustAnswer UK
  • JustAnswer Germany
  • JustAnswer Spanish
  • JustAnswer Japan