1999 SABLE WAGON STARTING PROBLEM

  • Tiny
  • Doug14
  • 1999 MERCURY STATION WAGON
  • 70,000 MILES

1999 sable wagon 24V DOHC 70000km Engine cranks for 30 seconds or so before it will start and then runs rough for 10 seconds. After that it is fine. Runs great, idles. Accelerates. No issues. Will restart fine. After sitting an hour or more hard to start again. Have changed fuel fitler, air filter, ran hi-octane fuel, tried injector cleaner. No change. Could this be a fuel pump problem? Could plugs and/or wires be getting tired? Seems worse first thing in the morning. Any suggestions?THX doug

Do you
have the same problem?
Yes
No
Monday, October 10th, 2011 AT 6:03 PM

5 Replies

  • Tiny
  • Jacobandnickolas
  • EXPERT
  • 68,402 POSTS

I recommend that you check fuel pump pressure. It sounds like you have a weak pump or the pressure bleeds off.

Was this
answer
helpful?
Yes
No
Monday, October 10th, 2011 AT 6:05 PM
  • Tiny
  • Doug14
  • MEMBER

Thanks I did check pressure before and after filter change. No difference. Is there a check valve that is accessible or is it in the tank with the pump?

Was this
answer
helpful?
Yes
No
Monday, October 10th, 2011 AT 6:11 PM
  • Tiny
  • Jacobandnickolas
  • EXPERT
  • 68,402 POSTS

There is one on the fuel pump in the tank.

Was this
answer
helpful?
Yes
No
Monday, October 10th, 2011 AT 6:25 PM
  • Tiny
  • Doug14
  • MEMBER

Rats! I really didn't want to drop the tank. Can I leave a fuel pressure guage on the car running and then turn ignition off and wait a while to see if pressure drops off significantly?

Was this
answer
helpful?
Yes
No
Monday, October 10th, 2011 AT 6:33 PM
  • Tiny
  • Jacobandnickolas
  • EXPERT
  • 68,402 POSTS

Yes, that is what you need to do. It is called fuel pressure drop off. When you shut the key, it should maintain pressure for a while. If you go to our homepage under the DIY section, there is a video and detailed directions for checking pressure and drop off. Check it out. It should be helpful.

Was this
answer
helpful?
Yes
No
Monday, October 10th, 2011 AT 7:36 PM

Please login or register to post a reply.

Other Engine No Start Questions