Fabia vrs problem non start

[p-mwrx]

Hi

I have a 04 fabia vrs and it won't start.

I have tried a few thing as main code I was getting was cam sensor.

I have changed this, checked timing, checked fuses and wiring. I have tested pump under seat and working. New filter filter, got fuel at filter in and out.

Just done a pressure test at tandem pump and got 10 psi about 0.68 bar.

I believe it should be 3.5 min bar, can anyone confirm pls

[freelanderman]

Tandem pump should be 3-5 bar at idling, tank pump about 15 psi and a delivery of about one litre a minute.

[p-mwrx]

I can't get it to idle so only got crank pressure

[freelanderman]

Even crank pressure should be much higher than the reading you are getting, is the in tank pump delivery up to spec.

[p-mwrx]

Yes

[freelanderman]

If your satisfied that tank pump is ok then tandem pump is faulty

[p-mwrx]

Tried 2 second hand tested tandem pumps and still nothing.

[freelanderman]

What other codes are you getting, does the engine start with easy start, is the fuel contaminated with water, are compression reading up to spec. Is the crank sensor working.

[Andymod]

Have you noticed if the rubber boost hoses collapse whilst cranking. Once had a VRS fabia non start, turned out turbo shaft was seized. Noticed the hoses collapsing due to vacuum produced. Removed boost hose from inlet manifold and it ran for a few seconds.

[p-mwrx]

Only codes I am getting is comfort can bus working on one wire and steering angle sensor.

Easy it works whist spraying but when you stop it cuts out and compressions good. Diesel ok

[p-mwrx]

Crank showing ok on live data

[p-mwrx]

Got another head going on tomo with different set of injectors in from working pd Engine now as been told might be a couple of injectors leaking so No pressure building up

[p-mwrx]

Second hand head on and now starts, lumpy and smokes though. Are injectors needed to be adjusted or do I have another problem

[freelanderman]

Injectors are adjustable, but they require a dti to set up, I would give it time to settlle down first and check all other sensors for correct readings first.

[p-mwrx]

Vcds code read now and got cylinder 1 misfire

[freelanderman]

I find that strange, not aware that pd engine has misfire detection, what's the code number

[p-mwrx]

P0301 misfire detected cylinder 1

[freelanderman]

You could check the injecter wiring harness, If it where mine I would use a oscilloscope to test injector solenoids, crank and cam sensor readings, also use a impulse sensor with the scope to check intake and exhaust readings.

[p-mwrx]

I have changed to harness as well. I have also move injector from 1 to 2 and misfire stayed on number 1

[freelanderman]

Only a scope would be able to tell you if number one inj.fuel solenoid was operating correctly allowing the inj.to fire instead of returning the fuel to tank.

[James@RRG_Skoda_Rochdale]

This sounds like you originally had a leak within the integral fuel rail and now you possibly have a bent rod or some compression anomie on cylinder 1. did you check the cam and followers on the substitute head?