Question about 1994 Buick LeSabre

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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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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.

Posted on Feb 04, 2010

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Posted on Jan 02, 2017

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