1997 Buick Lesabre hard starting when engine is hot

GENE ZYWICKI

MEMBER
1997 BUICK LESABRE

Engine Mechanical problem
1997 Buick Lesabre 6 cyl Front Wheel Drive Automatic

when starting my car hot it cranks fast but it takes a while before it starts and after that it runs normally. The fuel pump is new, the injectors have been cleaned, new battery. DO YOU HAVE ANY SUGGESTIONS

7 Replies

JDL

MECHANIC
16,098 POSTS

Hello, I do the basic tests, even if the vehicle is brand new. Have a helper crank it, while you check for spark at the plugs and injector pulse. Use a gage check fuel pressure. Any codes?

Do the testing when the vehicle refuses to start. Go from there.

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Thursday, April 30th, 2009 AT 12:06 PM

GENE ZYWICKI

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Sunday, May 3rd, 2009 AT 3:34 PM

2CARPRO JACK

MECHANIC
11,533 POSTS

Was the fuel filter replaced at the same time? Even with anew pump, it sounds like it may have a pressure problem, have a manual gauge put on it to verify pressure goes up and stays up (no bleed down). Also check the fuel pressure regulator to be sure there is no fuel in the vacuum line, that can cause a rich condition that will cause hard hot starting. Has the tune up been done? If so be sure OE plugs/wires were used

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Monday, May 4th, 2009 AT 12:31 PM

GENE ZYWICKI

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4 POSTS

I replaced the fuel filter, spark plugs, ignition wires, fuel pump before this problem started so I hope that the fuel pressure regulator may be the problem. The maintenance on my car is always 100% up to date

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Monday, May 4th, 2009 AT 6:20 PM

2CARPRO JACK