Could be the rod bearings going.
...Art
On Fri, 1 Aug 1997 pokrefke@ocean.st.usm.edu wrote:
> Yesterday I noticed a strange sound from my engine. On hard accleration, the
> engine makes a slight rapping noise. I have not changed the timing or any
>other
> variable with my engine. The only possible explanation I can come up with is
>water
> in my fuel. I filled up Monday with 93 octane - if there was water in the
>gas,
> would it make my engine "ping"?
>
> Thomas James Pokrefke, III (T-minus 7 days and counting until graduation)
> 1970 MGB
> pokrefke@ocean.st.usm.edu
> http://ocean.st.usm.edu/~pokrefke
>
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