Question about 1998 Mercury Mystique

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1998 mercury mystique started and suddenly cutoff and now will not start.It is getting fuel and spark but the compression is low. What could have happened. Mechanic and I are at a loss. Timing is ok as well.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 183 Answers

SOURCE: 1996 mercury mystique

Check for vacuum leaks.You can spray starting fluid around all parts of the intake.Observe idle as you do.If there is a leak the engine rpm will race higher.Also listen for hissing noise.Is the check engine light on?..If so what codes are stored..Good Luck!!!

Posted on Aug 04, 2008

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CMV9
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SOURCE: 1998 mercury mystique odd starting problem

I i were you i would check the ignition. it sounds like you are only connecting some of the time. And yes it is very normal to hear the fuel pump kick on when you turn the key to the on position.

Posted on Jan 08, 2009

  • 141 Answers

SOURCE: wont start

will what have you checked for dose it have spark , dose it have fuel? if it will not start with starting fuild i would say that you have no spark . go to one of the plug wires remove it from the spark plug install a spark checker you can buy one at any parts store . crank mtr do you have spark. if not check another one that way you can rule out the coil pack still no spark may have a bad crank sensor . at this time i would take it in to a repair shop so they can test that item . unless you want to replace it and take a risk that it may not solve your problem good luck kdc744

Posted on Jan 18, 2009

c17hydro
  • 2984 Answers

SOURCE: firing order of 1998 mercury mystique

Here's the firing order:


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Posted on Mar 22, 2009

  • 1 Answer

SOURCE: 2stroke 8 HP mercury outboard,newish engine no spark

Clean or change the Spark Cables>
to cleab the pull them out and with antirust spray and clean

Posted on Jun 29, 2010

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Wont start


will what have you checked for dose it have spark , dose it have fuel? if it will not start with starting fuild i would say that you have no spark . go to one of the plug wires remove it from the spark plug install a spark checker you can buy one at any parts store . crank mtr do you have spark. if not check another one that way you can rule out the coil pack still no spark may have a bad crank sensor . at this time i would take it in to a repair shop so they can test that item . unless you want to replace it and take a risk that it may not solve your problem good luck kdc744

Jan 18, 2009 | 1998 Mercury Mystique

1 Answer

1998 mercury mystique odd starting problem


I i were you i would check the ignition. it sounds like you are only connecting some of the time. And yes it is very normal to hear the fuel pump kick on when you turn the key to the on position.

Jan 08, 2009 | 1998 Mercury Mystique

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