Car won't start?

Tiny
TIMWELTY
  • MEMBER
  • 1 POST
  • 1997 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 145,000 MILES
My Buick LeSabre is a little hard to start when cold. When it does start, it usually runs ok but when it is driven for about 30 minutes and you shut it off, sometimes it will start, run really rough, then die and it wont restart for about an hour.
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Tuesday, August 4th, 2020 AT 4:25 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do not wait, do below to determine if it's fuel or spark problem:

Cranks and w/n start

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 3/16 away from ground -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it
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Tuesday, August 4th, 2020 AT 4:25 PM (Merged)
Tiny
HENRYMOORE
  • MEMBER
  • 1 POST
  • 1997 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 150,000 MILES
I CAN START MY CAR DRIVE IT FOR A HOUR, COME BACK AND IT WILL JUST TRUN OVER BUT WOULD NOT START, AFTER ABOUT TWO OR THREE TRYS IT WILL START, WHAT IS WRONG
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Tuesday, August 4th, 2020 AT 4:25 PM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check fuel pump and fuel pressure
check for spark
check key and security system
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Tuesday, August 4th, 2020 AT 4:25 PM (Merged)

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