1996 Pontiac Bonneville starting real hard

185,000 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
MARKO 127 127
  • MEMBER
  • 2 POSTS
I have a 1996 pontiact bonneville and have just replaced the iridium spark plugs and spark plug wires, but it is still starting real hard. It takes 2 to 3 times for it to finally start and and it will run ruff for about 1 to 2 minutes and then it will start to smoth out. While I'mdriving it right after it starts does not seem to have the pick-up it use to have. If you have any ideas i would really appecciate to no end thank you very much. Mark B in Toledo Ohio
May 27, 2009 at 7:01 AM
Avatar
JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Have you checked fuel pump pressure? It may be dropping off and taking a few seconds to build back up enough to start.

Here is a how to video for checking it.

https://www.2carpros.com/dia/test_fuel_pressure.htm

Let me know what you find.

Joe
May 29, 2009 at 12:14 AM
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Frequently Asked Problems for This Vehicle