Okay so the issue is as described in the title.
At low loads/idle/low rpms, usually its fine but sometimes limps like it's running out of gas.
At high loads/rpms it cuts out like its hitting a rev limiter.
I've put a fuel pressure gauge on, but obviously I can't look it when I'm driving.
Odd behaviour:
At idle, if I blip the trottle quickly, the pressure drops immediately to zero, then gets right back up to just under 3 bar (not quite 3 bar). Maybe the fuel pump is shutting off?
When car is off, I prime the fuel pump, the pressure builds up then drops to zero. I pinched the return line and pressure still goes to zero. This means the fuel pump (walbro 255) does not have a check valve.
Behavior:
What troubleshooting steps should I take?
At low loads/idle/low rpms, usually its fine but sometimes limps like it's running out of gas.
At high loads/rpms it cuts out like its hitting a rev limiter.
I've put a fuel pressure gauge on, but obviously I can't look it when I'm driving.
Odd behaviour:
At idle, if I blip the trottle quickly, the pressure drops immediately to zero, then gets right back up to just under 3 bar (not quite 3 bar). Maybe the fuel pump is shutting off?
When car is off, I prime the fuel pump, the pressure builds up then drops to zero. I pinched the return line and pressure still goes to zero. This means the fuel pump (walbro 255) does not have a check valve.
Behavior:
What troubleshooting steps should I take?
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