Working out some kinks UPDATE (Bogging, jerking, hesitating at low ks)

[Jib05]

Ive installed and wired a brand new transfer pump over the weekend, and still no change. I must be missing something.

[Jib05]

So on m50s the crank pos sensor controls the ignition timing and the cam pos sensor controls the fuel injector timing? mine measure within tolerance but maybe i should try getting brand new ones?

[pandaboo911]

Again. Check fuel pressure before throwing money at it

[Jib05]

well blew the headgasket today, don't know how or why... GGWP. Game over.


EDIT

Apparently condensation? thats what a mechanic said. After checking fuel pressure ill be giving it to a mechanic to sort out as i think i've exhausted my knowledge/abilities.

[Jib05]

Just to update this thread, the issues were

1) Crack in insulation in coil pack #4. just happened to start my car one night for no apparent reason and saw the spark jumping from the coil to the rocker cover.

2) Ecu/tune. Either the ecu or chip tune in my original ecu was kaka. Bought another NV ecu.

3) Vacuum leak at the PCV valve. Although I smoke tested 3-4 times, it wasn't enough to show this leak. The O-ring was brand new but i must've done something weird to cause it to not seat properly.

Complementary to this I did install a fuel pressure gauge. The fuel pressure did come up fine, but i feel for the price and ease of installation its worth having that extra thing to help me with this car.

Again thanks to pandaboo911 for your help! Also R3v! Churr.