Timing belt tensioner & spark plug question

[Kneale Brownson]

Audi I5 engines use the water pump to tension the timing belt.  There also
is an idler pulley, but it's in a fixed position.

At 02:57 PM 8/25/2004 -0600, Zsolt wrote:
>I need some maintenance work on my car including timing belt, water pump 
>and lifters, and I was wondering if there is also a separate tensioner on 
>this engine. It's an 88 5ktq. I was told it's part of the water pump which 
>I am changing anyway.
>
>Also, I am getting new spark plugs along with Magnecor cables, and I wanted 
>the W7DTC plugs, but I was advised to get the W7DC instead because they are 
>just as good and much cheaper. Can anyone tell me the difference?
>
>Thanks,
>ZSolt
>
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