dick hiebert Posted on Feb 04, 2010

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94 buick lesabre 3800 auto. misses and sputters at idle and in gear. new plugs, wires, good coils, injectors test good. driver side back hole is only 90 psi comp. the rest at 120psi. do i need a valve job or upper engine cleanout or what do u think. torque converter lockup is messed up i know but i can use drive instead of od. 135,000 miles and been driven easy. 4 speed auto tranny.

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Ronny Bennett Sr.

Buick Master 6,988 Answers
Posted on Feb 04, 2010

Ronny Bennett Sr.

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Joined: Feb 28, 2009

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Try some Lucas fuel treatment,with a less fuel as possible so it can work better,it will be stronger,it will clean the injectors,and it will help if carbon is on the valves,it will burn it off the valves.Also check the fuel pump pressure.

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