All Things Mk5 > Mk5 General Area
Fuel pressure problems
pudding:
I tried a Loba one years ago but they chew through cam followers. The VIS motorsport internals are a safer bet as it retains the factory piston spring, therefore no additional load on the follower.
Uncleben:
Would it be worth checking what the injectors are doing? I spoke to a mechanic who suggested reading the injector values, or if possible, removing the fuel rail with the injectors (leaving everything connected) turn it around and see if the injectors all squirt equally when turning engine over. I would have thought any injector problems would throw a fault code? I suppose it wouldnt hurt to read the injector data, are you able to compare specified vs actual on the injectors, or is it pointless?
pudding:
Injectors aren't monitored in terms of ECU control, only whether they are physically connected or not. The ECU instead relies on MAF readings and 02 sensors to monitor the burn, but even then, only 1 sensor is shared across 4 cylinders, so it's all a bit crap really.
Anyway...... removing the intake to watch the injectors during cranking isn't practical due to the hard lines. They won't be the cause of your fuel supply problems anyway. If the engine starts and runs, it's not them.
Uncleben:
Well thats good news, at least they can be ruled out.
I've decided to try a new HPFP, If I got rid of the car without trying one I'd always wonder if that was the cause, or regret not spending £150 to possibly fix the issue!
pudding:
I agree. It seems like you've exhausted all other avenues, so why not!
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