hi peps . ive just recently brought my wife a 2001 (Y) golf tdi 5 speed its got a problem with the diesel you drive it and it looses power and dies, when checking under bonnet when this happens the clear pipe from fuel filter shows no diesel but there is plenty on tank it has bubbles flowing through so makes me think its Air is the problem ... when car dies if you leave it for few mins spin it over and diesel pumps up again but sometimes will be ok but another time will just cough and splutter and loose power .. ive changed diesel filter but still doing it can ANYONE PLZ HELP

If you take off fuel filler cap -do you have a vacuum in the tank?I had this on a peugeot-vent pipe was blocked,and when you stopped vacuum pulled all the fuel out of the I/P-Does it still happen if you run engine with the filler cap off or loose?-otherwise you have air in your system and it needs further bleeding-or something more serious

Sounds like you have a fuel restriction in the line.
Lots of troubleshooting info at tdiclub.com. Look for 'How to troubleshoot low power" specifically fuel related. Many times it's the fuel tank sender/pickup is clogged in the fuel tank.


If you see air bubbles in the line all the time, it would be an air leak, usually the O-ring at the "T" valve on the fuel filter.