How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask FIX-IT Your Own Question
FIX-IT, Technician
Category: Heavy Equipment
Satisfied Customers: 1207
Type Your Heavy Equipment Question Here...
FIX-IT is online now
A new question is answered every 9 seconds

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

Resolved 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
Submitted: 5 years ago.
Category: Heavy Equipment
Expert:  FIX-IT replied 5 years 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-IT and other Heavy Equipment Specialists are ready to help you
Customer: replied 5 years ago.
replaced mains &replaced bypass & relief valve replaced oil pump no fuel in oil can you ck oil cooler on truck