1985 Mercury Marquis Cutting off while stopping

Tiny
GIJB2
  • MEMBER
  • 1985 MERCURY MARQUIS
Engine Performance problem
1985 Mercury Marquis V8 Two Wheel Drive Automatic

as you can see I have a 1985 grand marquis and it cuts off when I stop a a stop sign or red light. It also shuts off when I put it in reverse. My cousin thinks its a clogged fuel injector. What do you think? Would a clogged fuel injector do that or could there be another problem?
Sunday, May 30th, 2010 AT 9:14 AM

4 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Many things can do it, plugged fuel filter, vacuum leak, needing a tune up, low fuel pressure. Has the check engine light ever come on?
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Wednesday, June 9th, 2010 AT 9:26 PM
Tiny
GIJB2
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No the light hasnt came on, I changed the filter last year got a tune up in summer of 08, I also forgot to say it backfire a little.
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Wednesday, June 9th, 2010 AT 11:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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If you are getting a back fire, first I would check for vacuum leaks. Also, does it seem any worse when it is damp outside?
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Thursday, June 10th, 2010 AT 7:17 AM
Tiny
GIJB2
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No not really. It seems to run good for a short period but then starts acting up.
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Thursday, June 10th, 2010 AT 10:27 PM

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