Question about 2003 Audi A4 Cabriolet
The water pump has gone on my car. Can you tell me if this a big job. Am doing timeing belt at same time.
This isn't too bad a job as timing belts and water pumps go, but then I've done so many timing belts and water pumps on so many different vehicles its all just a blur now!!
It is always recommended that if you release the tension from an old timing belt then you should fit a new belt and discard the old one.
I would also urge you not just to fit a timing belt. Buy a whole belt kit. You should change everything the belt touches which runs on a bearing, and apart from the water pump, it will all be included in the belt kit. The water pump is purchased seperately.
If any of the bearing-run components pack up then it will be just as devastating to the engine as a broken timing belt, because the timing will jump several teeth and valves and pistons will collide. The belt may even sheer or snap.
It is for this reason that if I ever get a call out for a routine timing belt change, I always advise the full kit, and the water pump.
It may sound a bit expensive to be replacing items that may not require changing, but if you think its only once every six years or so then its not that bad.
It is also very important to observe the torque settings for the center bolts of any pulley wheels (idlers and tensioner). If you whack them up too tight then the applied forces from the timing belt, instead of being dissipated through the bolt and into the engine, will instead act upon the bolt and it will eventually snap.
Apart from that, the very best of luck with it.
Posted on Jun 09, 2008
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