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Re: Engine Pinging and lack of top end
the lack of top end sounds like valve timing to me could easily be a tooth or two off.
but the pinging shouldnt be coming from that and you said it went awap with 93 which is more strange. i say pull the timing cover and set #1 to TDC and see if the cam gear is at the tdc possition.
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Saturn Stealership Technician #331
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