hey guys.

so its been long time that my fabia mk2 suffers from hard start when cold.

i live in israel so our temperatures do not go that low. the engine is 1.9 tdi pd BSW code.

the vcds throws camshaft sensor error - signal intermittent signal. ordered a new sensor, waiting for it.

ive read on other forum about leaking tandem pump. i replaced a pump with used one with low milage, but the problem still there.

also ive read that lift pump should pump 3 litre diesel a minute, my does only 2 litre. could the lift pump cause the problem?

torsion value/synchro angle is set to 0.0 but its might be wrong because the sensor is probably bad.

no blown fuses, fuel lines replaced with new ones, fuel filter was done 20k mile ago, also ordered one, soon will replace to new one.

when car wouldnt start, i disconnect the hose from the inlet maifold and give a sparay of brake cleaner to start the car( i know the brake cleaner isnt good idea) then the car would start , but sometimes when driving first 5-10 minutes the acceleration pedal stops responding . i press the pedal but car wont accelerate till i go to idle rpm(like the injectors dont get command). sometimes it just cuts out after first minutes of driving and then again there's an hard start.

injectors seem to be good, block 4 deviasion for all 4 is between -0.5 and 0.5.

the car has new bosch MAF. car doesnt smoke

fuel consumption also is high, around 33 mpg combined, i dont drive hard anyway

timing belt was replaced like 12k miles ago, using vag related locking tools, since then ive opened the timing again to check if everything is alright and it was okay.

the car is with 310k miles on it, i drove 20k miles on it already.

any ideas whats going on?

Cam timing is out, torsion value will show zero when the angle is outside of the limits that it can display, now it could be that yours is 100% spot on but I know that its such a fine adjustment that it takes 5 or 6 attempts to get it to a true zero reading.

 

One sure fire way of knowing is to look at the measuring blocks in VCDS, if the engine is revved to say 4k RPM you should see the torsion value reduce by 0.5 - 1.0 degrees, - might have got that backwards, the VCDS measuring units are not intuitive.

 

Everything else that you have said points to cam timing being out.

 

Been there done that got the T shirt. 😞

18 minutes ago, J.R. said:

Cam timing is out, torsion value will show zero when the angle is outside of the limits that it can display, now it could be that yours is 100% spot on but I know that its such a fine adjustment that it takes 5 or 6 attempts to get it to a true zero reading.

 

One sure fire way of knowing is to look at the measuring blocks in VCDS, if the engine is revved to say 4k RPM you should see the torsion value reduce by 0.5 - 1.0 degrees, - might have got that backwards, the VCDS measuring units are not intuitive.

 

Everything else that you have said points to cam timing being out.

 

Been there done that got the T shirt. 😞

The torsion value is alright, it moves between 0.0-0.6 . I set it to this measurement.