99 MERCURY COUGAR NO START?

  • Tiny
  • 72guy
  • 1999 MERCURY COUGAR

Replaced fuel pump alternator battery and spark, plugs good fuel pressure in the fuel rail. Cars getting spark engine and cranking fine so starter is good but the car still wont run

Do you
have the same problem?
Yes
No
Saturday, April 28th, 2012 AT 10:33 PM

10 Replies

  • Tiny
  • ASEMaster6371
  • EXPERT
  • 25,554 POSTS

Fuel, spark and compression are required to start. One of them is missing. You say you have spark. Good, now you need to measure the fuel pressure. Should be around 40+ lbs.

Roy

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 10:35 PM
  • Tiny
  • 72guy
  • MEMBER

Have all 3 of those the car still doesnt start that is the problem

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 11:10 PM
  • Tiny
  • ASEMaster6371
  • EXPERT
  • 25,554 POSTS

Maybe it is flooded. What is the compression and fuel pressure

Roy

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 11:17 PM
  • Tiny
  • 72guy
  • MEMBER

Its almost as though there is fuel through the rail the injectors arent opening

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 11:19 PM
  • Tiny
  • ASEMaster6371
  • EXPERT
  • 25,554 POSTS

Almost? You need to measure the fuel pressure. Try sparying carb cleaner into the air filter and see if the motor fires up for a few seconds.

Roy

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 11:25 PM
  • Tiny
  • 72guy
  • MEMBER

Already did with starter fluid

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 11:27 PM
  • Tiny
  • ASEMaster6371
  • EXPERT
  • 25,554 POSTS

And? Did it start

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 11:30 PM
  • Tiny
  • 72guy
  • MEMBER

Yes

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 11:33 PM
  • Tiny
  • ASEMaster6371
  • EXPERT
  • 25,554 POSTS

Ok, I bet you have a failed fuel pump. It may not have enough pressure to start it.

Check the inertia switch as well. It may be in the trunk behind a door clearly marked or it is behind the right front kick panel in front of the passenger door.

Roy

Was this
answer
helpful?
Yes
No
Saturday, April 28th, 2012 AT 11:35 PM
  • Tiny
  • 72guy
  • MEMBER

Have fuel pressure up to 40 psi but having an issue where I have to pump it up by turning the key on and off or wiggeling the relay so the pump goes on and off also was wondering what the five wires are on the plug for the pump boot

Was this
answer
helpful?
Yes
No
Monday, April 30th, 2012 AT 10:56 PM

Please login or register to post a reply.

Other Engine No Start Questions