1990 Buick Lesabre plz help!!!!!!!

1990 BUICK LESABRE
Avatar
CARRIE-LYN
  • MEMBER
  • 1 POST
Engine Mechanical problem
1990 Buick Lesabre 6 cyl Front Wheel Drive Automatic 84.464 miles

my buick lasabre is having problems starting in the morning and its not cold out ( I am the second owner@ 84,000 clicks the first lady serviced it all the time ) i try to turn it over and it just hesitates and eventually back fires it takes awhile but will start but i definatley know somethings up! not sure where to go from here i have replaced fuel filtre,air filtre and went a got a fuel injection cleaning
any suggestions plzz
Oct 21, 2009 at 12:19 PM
Advertisement
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
If it doesn't wanna start when its cranking over? Do below

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine -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
Oct 21, 2009 at 1:17 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
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.

Ask a new question

Frequently Asked Problems for This Vehicle