1997 Buick Lesabre hard starting when engine is hot

Tiny
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
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Thursday, April 30th, 2009 AT 11:52 AM

7 Replies

Tiny
JDL
  • EXPERT
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
Tiny
GENE ZYWICKI
  • MEMBER
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Sunday, May 3rd, 2009 AT 3:34 PM
Tiny
JACK42
  • MEMBER
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
Tiny
GENE ZYWICKI
  • MEMBER
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
Tiny
JACK42
  • MEMBER
Check it and get back to me
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Monday, May 4th, 2009 AT 8:20 PM
Tiny
GENE ZYWICKI
  • MEMBER
I had the problem checked out and the fuel pump that was replaced was defective - they said it it was bleeding off and holding pressure
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Tuesday, May 5th, 2009 AT 3:31 PM
Tiny
JACK42
  • MEMBER
Glad they found the problem
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Tuesday, May 5th, 2009 AT 5:53 PM

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