Mechanics

WHAT'S WRONG WITH MY ENGINE PERFORMANCE?

1993 Chevrolet Truck • 220,000 miles

I own a 1993 chevrolet truck. The engine loses power at 70mph and bogs down to about 50mph. Eventually it seems to clear and start running normally again. Have replaced a timing chain, tuned up the motor, added fuel system cleaner, replaced fuel filter, and replaced some exhaust pipes.
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Jwa1949
August 11, 2012.




Are there any trouble codes?

KHLow2008
Aug 11, 2012.


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