There really is no hard rule for when to replace a fuel filter. It depends on where you live, fuel condition, weather condition, etc.
If you live in a place with lots of dust in the air or a place where the fuel you get may be dirty right from the pump then you should probably at least back-flush the inline type filter once every few months and replace it once a year. If they are readily available and not too expensive just forget the back-flush and replace it once every 6 months. If the place you live is less dusty then replacing once a year is probably good. As a general rule, if you have to crawl under there to get a good look at it, you may as well replace it while you're down there. They cost about USD $2 each over here. I just bought a 1970 Campmobile and I have no idea what kind of crud is in the fuel tank so I bought 5 of the filters and tossed them in the glove box. G2 On Tue, 2 Feb 2010 09:59:28 +0000 asad ishaque <[email protected]> wrote: > > Thanks for the detailed explanation, > I think I have sounded as if I had not changed the fuel filter > for years (!!).....while that is not true, I must admit I am not very > regular too. How often should a change be?? How many miles/km? I did > tackle the problem today. Here is what I found.......... I took the > in line disposable kind Bosch fuel filter off the hard line exiting > the body.....and could not believe what I found......a 2cm long plug > of what looked like a dust bunny!! Drat!! Pulled it out and felt it > good......fibres mixed with a bit of rusty crap. The fuel flow was > not too great too so I aspirated the line a bit and then pushed air > back towards the tank till I heard bubbles. I know the right thing > would have been to clean the tank and the line as suggested but > running short on time it was not possible. Being my daily ride, I had > to prepare for going off to work this afternoon. I know I must have > simply pushed more crap back into the tank for it to act up later. I > do have a fuel tank swap on the cards so I might do that sooner. > Anyway. Proceeded to replace the old filter. It really was not too > dirty and would have lasted more especially if I cleaned it as > described. But I decided to put in a new one as it may have to deal > with more crap coming its way. Now what remains is to test the > bug......the drive to work should reveal any problems.....I doubt > there would be any....fingers crossed! Asad. _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
