Hi guys,
Well im rollin, more like was rollin in a lush H reg mk2 gti 8v (Digifant)
Latley it decided to have a nice flat spot on the mid range of revs, any gear or in neutral. From experience with bikes, classic minis and other things it sounded like starvation of fuel but that doen not seem to be the case as of late.
Parts replaced trying to solve issue : In tank pump, external pump, MAF, Dizzy cap, rotor, leads, fuel regulator, vac leads, breather pipes, any gasket relating to inlet parts
tests done:
#Fuel pressure - though reads 8bar? way to high? yet regulator is sweet and it goes against the physiscs of fuel stavation
#Voltage on the MAF climbs nice and steady with no breaks up to 4.75v, so that fine.
#WOT switch and return to idle switch resistance chek, tehy switch and operate fine
#Voltage chek on the injector rail, 12.7-14v when raving and a drop to 4v when flat spot occures on onf of the wires, teh otehr stays at 12.7-14v.
#timing is set
#cO2 is set correct
#all earths are sweet with a clean ground point
#rev gently (very gently) and it will pick up all teh way through the range, but in regular throtal motion it just bogs mid to top range. Yet if you vback of a touch and go slow will then pick up.
I just dont get it
PLEASEE HELPPP i am now lost on what could be cutting the fuel when reving.
Two things left i supose could be
1- ECU is screwed
2- Knock sensor
Would any of these cause this issue?
I love this car soo much and hate it not being driven and adored by VW fans in my area.
Stoke on trent area if any mk2 guru's aint too far away.
Thanks
Matt
