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  • SN95 4.6L Mustang Tech

Cylinder 5 misfire?

  • Thread starter Thread starter Wht99GT
  • Start date Start date Aug 21, 2005
W

Wht99GT

Member
Aug 11, 2002
34
0
6
San Antonio
Aug 21, 2005
#1
  • Aug 21, 2005
  • #1
Ok, a little while ago my buddies dad decided to clean my engine for me. he used degreaser and water and was pretty liberal. Now I have a misfire in my number 5 cylinder. At first i thought water had slipped past the coil boot and gotten to my plug. I changed the plugs (nothing as wet either) thinking that was the problem. Still missing. Any ideas what it could be?

on the same note, i thought there was supposed to be a spring inside the boot that touched the plug. My 5,6, and 7 cylinders have no spring. They just have a metal piece that looks like it probably touches the top of the plug. I just had Ford replace my intake becuase it cracked at the thermostat housing. I now have the 01+ intake with the aluminum crossover. Would that be why i dont have contact springs or did the Ford tech screw up and not put in springs? Sorry for the long write up.
 
9

99blkcobravert

New Member
Apr 25, 2005
30
0
0
Vancouver, WA
Aug 21, 2005
#2
  • Aug 21, 2005
  • #2
Swap the #5 COP with #6 and see if it gives a misfire code for #6; if so the COP is bad.
 
W

Wht99GT

Member
Aug 11, 2002
34
0
6
San Antonio
Aug 21, 2005
#3
  • Aug 21, 2005
  • #3
99blkcobravert said:
Swap the #5 COP with #6 and see if it gives a misfire code for #6; if so the COP is bad.
Click to expand...

That's what im trying now. Its still misfiring but hasnt thrown a code yet.
 

sgarlic

Founding Member
Apr 21, 2001
3,085
1
56
Aug 22, 2005
#4
  • Aug 22, 2005
  • #4
Unplug the COP's and let them dry out for a few hours.

If it wasn't misfiring until the engine was washed, but also wasn't misfiring after you did the intake swap, then chances are it's not something Ford did.
 
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