Fuel problem or not ? 1.4 tdi vw polo

Honest John Back Room » Technical matters
What is life like with your car? Let us know and win £500 in John Lewis vouchers | No thanks
View Threaded
Tue 7 Nov 2006 14:24
Fuel problem or not ? 1.4 tdi vw polo - alan kearn
Any one with an idea of the cause of these symptoms
I have a 1.4 tdi pd (turbo diesel) Polo I should also emphasis it has 3 cylinders .and this fault appeared. when I was out in the car yesterday, the car suffered a dramatic loss of power in that when I was on on level ground I could not get the engine above 2500 rpm and the engine was jerking slightly as though the fuel was being shut off and on. when I reached an incline in the road I was left wondering if the car was going to manage to reach the top. If I pressed the accelerator further down to try to compensate for the loss of power on the incline I could here a hiss or a sucking of air sound from the engine compartment on the passenger side. As I have pointed out it has 3 cylinders and if one was not doing its share of load this could account for this large drop in power. When the car is not moving I can rev the engine right up to maximum rpm without any delay or hesitation, but this is when the engine is not under load. I have my doubts that it could be the turbo charger but I know could be wrong. To me it sounds as though one cylinder is not getting fuel to it. I am not totally sure but one day last week this same symptom appeared to happen momentarily when floored the accelerator there was a definite flat spot that then vanished as quick as it appeared (I have since done 150 miles) and at the time I though thats strange.

Thanks
Reply | Report as offensive | Link
Tue 7 Nov 2006 15:00
Fuel problem or not ? - 659FBE
Have a very careful look at the air hoses on the tubocharger and intercooler. You may well find one is leaking or adrift - well worth a look before delving too deeply here. Other than the MAF sensor, which generally produces different symptoms, the PD diesels are reliable.

659.
Reply | Report as offensive | Link
Wed 8 Nov 2006 16:57
Fuel problem or not ? - cottontop
Could it be that you've air getting into the fuel lines ?? Ive recently had a similar problem with my Golf Turbo Diesel. If youve a clear pipe going into the engine from the fuel filter you may beable the air stuck in the lines stopping the diesel getting into the engine.

Just an idea...

Richard
Reply | Report as offensive | Link
Thu 9 Nov 2006 06:19
Fuel problem or not ? - alan kearn
659FBE
your diagnosis was correct it was a disconnected hose

Thanks for the replies to my post
Reply | Report as offensive | Link
Thu 9 Nov 2006 08:18
Fuel problem or not ? - Xileno {P}
If only they were all that simple...
Reply | Report as offensive | Link