help

[marT350T]

Yesterday my car was running fine. Today went to start it and it would just run for about 4 secs and cut out. I have been trying to solve the problem all day but still cant get it to run. I have fuel pressure the injectors are firing , tried new plugs and the coil packs seem ok as the plugs are sparking etc. The crank trigger is ok.

The engine is a vw 1.8 20v turbo

[stevieturbo]

Getting stable rpm signal ? ( ie, confirmed good crank and cam signal )

Confirmed good spark at all 4 cylinders, at an appropriate time ? ( check with strobe light )

Are plugs wet or dry ?

Has ecu map changed from when it was running ?

When it does start...assume engine is cold ? how does it run ? fast, slow, rough ?

Have you confirmed power to fuel pump throughout ?

[marT350T]

stevieturbo said:

Getting stable rpm signal ? ( ie, confirmed good crank and cam signal )

Confirmed good spark at all 4 cylinders, at an appropriate time ? ( check with strobe light )

Are plugs wet or dry ?

Has ecu map changed from when it was running ?

When it does start...assume engine is cold ? how does it run ? fast, slow, rough ?

Have you confirmed power to fuel pump throughout ?

Yes

Yes

Map the same

Plugs dry

When the engine runs for a few secs I would say it runs ok but a little rich ( tried backing the fuel off on the laptop)

I havent confirmed power but I have got good fuel pressure.

[stevieturbo]

fuel pressure sounds fine.

Confirm power is maintained to coils and injectors etc throughout ?

I assume ecu maintains comms throughout ?

You did have it running ok with the larger injectors ??

[marT350T]

comms good all the time and have had it running with the new injectors.

[marT350T]

after 4 days of pulling my hair out I finally go her going. The problem was down to a faulty MAP sensor.