1994 p30 Winnebago warrior fuel pressure issue
Just got back from a short trip due to loss of power issue.
1994 Winnebago 454 fuel injected motor.
We had traveled 80+ miles up a couple pretty good inclines with no problems. Had plenty of power and running smooth. We came into a small town where the elivation was about 3500 feet. The engine started acting like it was running out of fuel. If you gave it a little to much throttle it sounded like it was just sucking air and would slow down. If I pumped the gas pedal a couple times it would take off for a few seconds then start bogging again.
I had 3/4 tank of fuel but decided to fill it up just incase. Same thing.
I changed the fuel filter and same thing so I figured it was the fuel pump. I installed a fuel pressure gauge and it showed around 5psi. I installed a new fuel pump and same low pressure so I figured it might be the fuel pressure regulator. I got a rebuild kit and put it in and same problem.
If I blocked off the return line pressure would jump to 50+ psi.
I ended up putting some vice grips on the return line and adjusted them so I had about 20 psi. Took it for a test ride and it ran pretty good so I headed back home and made it.
After I got home I unplugged the fuel pump harness at the tank and connected 12volts and same low fuel pressure.
Any idea why I have such low fuel pressure?
1994 Winnebago 454 fuel injected motor.
We had traveled 80+ miles up a couple pretty good inclines with no problems. Had plenty of power and running smooth. We came into a small town where the elivation was about 3500 feet. The engine started acting like it was running out of fuel. If you gave it a little to much throttle it sounded like it was just sucking air and would slow down. If I pumped the gas pedal a couple times it would take off for a few seconds then start bogging again.
I had 3/4 tank of fuel but decided to fill it up just incase. Same thing.
I changed the fuel filter and same thing so I figured it was the fuel pump. I installed a fuel pressure gauge and it showed around 5psi. I installed a new fuel pump and same low pressure so I figured it might be the fuel pressure regulator. I got a rebuild kit and put it in and same problem.
If I blocked off the return line pressure would jump to 50+ psi.
I ended up putting some vice grips on the return line and adjusted them so I had about 20 psi. Took it for a test ride and it ran pretty good so I headed back home and made it.
After I got home I unplugged the fuel pump harness at the tank and connected 12volts and same low fuel pressure.
Any idea why I have such low fuel pressure?
