Thread: Brake Bleeding - D1 with ABS

300tdis can have this problem when the vacuum pump is on the way out...


is yours a 300tdi ???????????

Originally Posted by 87County

Is yours a 300tdi ???????????

Yep certainly is. Pedal doesn't get rock hard even with the engine turned off. The pedal is spongy and it's slow stopping.

I might try bleeding the master cylinder seperately.

If you're not qualified or have knowledge of how to service ABS brakes, take it to a qualifed brake specialist and have it done, don't **** with brakes, you could kill yourself or others, Regards Frank.

They are notorious for getting air in the master cylinder and very hard to bleed. I have been advised that it is best to take the master cylinder and bench bleed it to get the air out. If you are worried about the ABS, find a dirt road and do an emergency stop or two to ensure that the ABS is working. If the bench bleed of the MC doesn't work, try a pressure bleed.


Tom.

Originally Posted by Tank

If you're not qualified

I've been a "qualified" mechanic for 38 years. I was just looking for any tricks that are special to the 300TDI D1.

Best place to start at if you have a rubbish pedal is wheel bearing adjustments, then bleeding, I don't have any trouble at all bleeding these, they do however have a rubbish pedal feel from new. The non ABS model however was fantastic.

This issue continued through the D2 also until 2002, the brake modulator must have had a bit of a going over as the brake pedal feel in the later D2 and D2a is way better.

JC

Did you bleed both nipples?. Pat

Originally Posted by PAT303

Did you bleed both nipples?. Pat

Both nipples???