Golf Gti Mk3 Misfire

[BazMK1]

Hi

I have a Golf Gti MK3 GTi 2.0 8V that has a misfire problem.

I have had it on the diagnostic machine at work and its come up with the following error:

01252 - Injector Cylinder 4 - N33 Short with Ground

I Have done a Ohms test on the injector which off auto data says it should be 14 - 18.  The injector on the car is 14.9.

Also have checked the supply voltage and that is 12.4V which it should be 11-14V when cranking the engine.

On the autodata it says you can check the signal,  Says you put an LED between terminals 1 & 2 in the wiring to the injector,  and says the LED should flash....  I have done this but the LEd doesnt flash when cranking the engine,  it just stays illuminated. 

Does this mean that there is a problem with the signal to the injector?

Thanks for your time

Baz

[Gti Gerbil]

not sure if the injectors on the golf are "earth switching" or "live switching"

but if they are earth switching and it has a short to earth then the led will be constantly on.

is fuel getting up to the cylinders at all ?

[Gti Gerbil]

have you checked all the injectors, or just one ?