Thanks for the reply.

I called a friend that had the some thing happen to his 325i 2 years ago. He used engine flush followed by adding 1 quart of Rislone Engine cleaner from AutoZone. He told me it has not made a tapping sound yet. I did the flush and Rislone yesterday so will have to wait to see if is did the trick.

If it happens again I will be using your advice MrCjames.

Thanks.

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2Boris
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90 Mercedes 190E 2. 6
98 Dodge Stratus
94 Jeep Grand Cherokee
84 Toyota 4 Runner
85 Cutlass Supreme
85 BMW 318i
80 Monte Carlo
77 BMW 320i
69 Chev Malibu

(Old School Rules)