Will turn over but will not start

Tiny
KRYS228
  • MEMBER
  • 2002 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 174,127 MILES
I have the GT model that will turn over but will not start. I have changed the fuel pump, fuel filter, spark plugs, wires, alternator, map sensor, MAF sensor, check fuel relay, ignition relay, and all fuse under hood. What could be my problem?
Saturday, January 20th, 2018 AT 5:12 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning.

You need spark, fuel and compression to run.
I know you replaced the fuel pump but does it have pressure? You will need to rent a gauge and test the pressure at the test port on the fuel rail.

You need to check for spark. Remove a wire from a plug and insert an old plug into the wire and lay it on the manifold. Crank the engine and see if you have spark.

Roy
Was this
answer
helpful?
Yes
No
Sunday, January 21st, 2018 AT 4:47 AM

Please login or register to post a reply.

Sponsored links