What should fuel pressure be at low idle?
At low idle, fuel pressure should be about 400 to 435 kPa (58 to 63 psi). If fuel pressure is zero then check to see that the cam/timing gear is turning the fuel pump. If fuel pressure is low then check fuel filters, fuel lines, etc. for restrictions. Check fuel transfer pump, valves and bypass.
Why does my truck engine not start when I replace the ECM?
NOTE: A new ECM comes with an unprogrammed Personality Module in it. If the ECM has been replaced, the ECM WILL NOT COMMUNICATE and the ENGINE WILL NOT START until the integral Personality Module has had software flashed into it. 4.
What causes a truck engine to not start?
If the ECM has been replaced, the ECM WILL NOT COMMUNICATE and the ENGINE WILL NOT START until the integral Personality Module has had software flashed into it. 4. No Speed/Timing Signal: a.
(7) Fuel outlet port. Fuel pressure at the inlet to the secondary fuel filter (8) should read between 400 and 525 kPa (58 to 76 psi) during normal operating conditions under load. At low idle, fuel pressure at the filter inlet (8) should read from 400 to 435 kPa (581 to 63 psi).
Why does my cat 3126 have low power?
Connect a clear plastic hose to the return to fuel tank hose on discharge end of fuel pressure regulator for clear stream of fuel coming from engine while engine at idle and high idle. If you have lot of air or foam in fuel clear line returning to fuel tank than that would cause low power.
Where does the oil go in a cat 3126 engine?
Cliff note version; engine oil is pressurized to around 3000 psi and sent to the fuel injectors (via HEUI pump) it uses that high pressure oil to push a piston inside the fuel injector (oil on top, fuel on bottom of piston) to atomize the fuel, the injectors are controlled by a solenoid on top of each.
Why does the cat 3126 have one solenoid?
The CAT design only has one solenoid where the Later Navistar design in the video has two. engine oil consumption via leaking piston sealing inside injectors. low power, oil breaks down and cannot be pressurized any more or is aerated. injector o-ring failure, causing cross contamation of fuel and oil, usually oil ends up in the fuel tank.