Well what started as a general investigation, ended up as project.
Decided to have a look into the LPFP to improve the cold starts and suspected I had a tired back flow valve that was bleeding fuel pressure. I also discovered i had an old style pump due to having an early GTI that was prone to overheating and was never changed.
I had already changed the pump controller to a new one as they too were prone to overheating and going pop.....my wife's golf did this on a journey and the car almost set on fire.
The new genuine pump was £270 + VAT so more than i wanted to spend since doing the cam chain job, a new VDO like genuine was out of stock everywhere and far less so went for the next best thing......a genuine secondhand one.
The new part number is 1K0919051DB and got one off a 1.4TSI Scirroco 2018, so a lot newer than mine and far less miles done on it too for £31 BARGIN!
Disconnect the pump fuse. 15 amp number 27 started the car until it died, then disconnected the negative battery lead.
Removed the back seat and was amazed how dirty the top of the pump was
Removed the ring, pump and seal of which I noticed was pinched from factory. Old pump ended in AE so definitely original
New elring pump seal and also the new to me pump back in
While I was there i also changed the fuel filter
Fuse back in and started the car
