Coil grounds to engine and loses spark
08-02-2011, 01:32 PM
#1
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Coil grounds to engine and loses spark
So Im driving around our shitty ******* roads last night and as I bounce my 700lbs springs and bilsteins off the bumpstops my car suddenly loses 2 cylinders.
Pull over and confirm spark on only 1 coilpack.
With the car running fine and me holding the coils, when I go to mount them again it starts sparking against the motor and then car starts to die.
WTF is going on here? Nothing looks to be grounding from the coil to the coil bracket.
Maybe I cracked a coil and its arcing to the bracket??
So currently I have the coils wrapped in leather gloves to prevent them from grounding, I'm going to swap them for a spare set I have but Im curious why this is happening.
Pull over and confirm spark on only 1 coilpack.
With the car running fine and me holding the coils, when I go to mount them again it starts sparking against the motor and then car starts to die.
WTF is going on here? Nothing looks to be grounding from the coil to the coil bracket.
Maybe I cracked a coil and its arcing to the bracket??
So currently I have the coils wrapped in leather gloves to prevent them from grounding, I'm going to swap them for a spare set I have but Im curious why this is happening.
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08-03-2011, 03:23 AM
#4
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Interesting. Your coil probably does have a crack in it. Or the wire going to the igniter is touching the coil bracket or something?
Never seen this happen on a Miata.
Never seen this happen on a Miata.
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08-03-2011, 04:37 AM
#5
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Mother-******* roads up here are **** and I'm running 700lbs springs and slammed so that probably doesn't help.
I'll water test that bitch tomorrow to see if it is cracked, good thing I have spares coils.
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08-03-2011, 01:21 PM
#7
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I found this to be the issue with my coils during my swap. I would lose a pair of cylinders as one was grounding out. There was a wire off the bottom of one of the coils that was close enough to arc over to the block. Just needed to reroute it and all is well now.
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