1994 Buick Lesabre Help plz!

KRISSAND

MEMBER
1994 BUICK LESABRE
6 CYL
FWD
AUTOMATIC
189,000 MILES

When I started my car and gave it gas it did not rev up I shut it of an then it wouldnt start. We changed the fuel pump, fuel filter, did a tune up. Then the pump would not work found out the wire was bad. Fixed that. An the car still wont start it trys to though. Was told the coils might be bad had them checked an was told there is no spark but then I was also told its uncommon for all 3 to go at once. I have spent about $300 in parts and tools. What else can I do?

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Cranking over and will not start do basic stuffs below

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 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, If you can hear the fuel pump come On- check the fuel pressure with a fuel pressure tester designed for your fuel system to rule out the fuel filter/fuel pick-up strainer/fuel pump/pressure regulator and also listen to the injector/s are they pulsing or hook up a noid light and see if it flashing, If you don't hear the fuel pump, check the fuel pump fuse and fuel pump relay-Depends on what type ignition system is yours, 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, camshaft and crankshaft position sensors and computer Note: If it doesn't apply to your vehicle disregard it meaning if it doesn't come with one ignore it and continue testing