Question about 1998 Buick LeSabre

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Fuel system Our 98 buick lesabre has an occassional problem. Some times it will not start, if you let it stand for a while  no problems. Other times you may be driving and it starts to backfire and nopower. We've taken it to the dealer fuel filter , fuel pump changed . sometimes nothing . Last year I drove to new york from tn. When I got to virginia it started, I got off the interstate and babied it for 200 miles filled up with gas and after a while no problems for the rest of the trip.It happens more times at low fuel but has happened at ahalf tank. I read now about a recall of the fuel regulator 04v090000 could this be the problem,any other suggestions. thank you

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The fuel pressure regulator does have a history of leaking allowing fuel to be sucked into the engine causing a flooding concern. This can be checked by getting the vehicle up to normal temp, turning it off and removing the rubber hose that goes to the regulator ( located on the fuel rail closest to the front of the vehicle). While watching the nipple on the side of the regulator you should see fuel begin to come out of it. I have seen it pour out so be carefull, it is a possible fire hazard.

Posted on Aug 20, 2008

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