Question about Mitsubishi Diamante

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Bogging while heavy accelration.

Heavy acceleration engine boggs. Cat converter been replaced, full tune up plugs wires cap and rotor. Idle has slight misfire. No trouble codes in ecm. Fuel pressure at 45 psi fuel pump been replaced. Spark on all cylinders check at distributor okay. Applying throttle slow engine okay wont bogg. Only slam throttle to floor boggs big time. Car has 134500 miles.

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Vacuum advance working ? do manuel check with cap and rotor button off and see if it's moving. chris

Posted on May 08, 2009

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