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misfire compression issue
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marcus31
New User
Apr 5, 2012, 12:13 PM
Post #1 of 8
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misfire compression issue
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I have 2002 ford Taurus 3.0 lx. Misfire on 3 and low compression on 2 .. . heater is acting like a/c when I turn on heat normal a/c water comes out where it supposed to for a/c. Are the two connected? what's wrong?
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 5, 2012, 12:24 PM
Post #2 of 8
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Re: misfire compression issue
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The compressor runs in defrost so that condensation is normal.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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marcus31
New User
Apr 5, 2012, 12:35 PM
Post #3 of 8
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Re: misfire compression issue
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Ok so does that explain why I'm getting low compression on cyl. 2 and misfire on 3? I thought they might have a relation. The car is sluggish and misfire light keeps flashing
(This post was edited by marcus31 on Apr 5, 2012, 12:40 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Apr 5, 2012, 12:40 PM
Post #4 of 8
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Re: misfire compression issue
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No it doesn't. Totally different problem that needs to be diagnosed though additional testing starting with a leakdown test.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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marcus31
New User
Apr 5, 2012, 12:45 PM
Post #5 of 8
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Re: misfire compression issue
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Did compression test cyl. 2 is 90 all other cylinders read 150. Not sure what leak down test is. Have replaced spark plugs coil spark plug wires.
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Discretesignals
Ultimate Carjunky
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Apr 5, 2012, 6:45 PM
Post #7 of 8
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Re: misfire compression issue
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Squirt a little bit of motor oil into number 2 cylinder and retest. See if the compression reading comes up.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Apr 5, 2012, 6:46 PM)
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Apr 8, 2012, 5:40 AM
Post #8 of 8
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Re: misfire compression issue
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Yes, yes, yes. Leak Down: Have subject cylinder on TDC, spark plug out the apply air pressure noting where it comes out like thru oil fill cap or throttle body. It's not 100% but leads to the diagnosis of the problem. If you don't have a clue on this you need to send it out for diagnosis,
T
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