Coil question
07-21-2003, 09:23 PM
#1
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Car: 95 E-150 & 07 Kawasaki ZX-6R
Engine: A slow one & a fast one
Transmission: A bad one & a good one
Axle/Gears: A weak one & a chained one
Coil question
When cranking the car over with the ignition system disabled, such as for a compression check....I've always disconnected the wire from the coil to the cap and put a thick rubber cap over the coil terminal. I've just thought about this now...at like 50,000 volts...could this be damaging the coil by causing some sort of feedback or something? Is it better to, say, leave the wire on the coil, but pull it off of the cap and ground it somewhere away from the engine? Thanks.
07-21-2003, 10:27 PM
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Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
What you're doing is fine. There is no path for the current to follow, so there is not voltage going through the coil.
If you were to ground it, you would get voltage running through the coil, as well as through the whole engine. Not really bad, but you'd have to be careful about letting a wrench ground out.
If you were to ground it, you would get voltage running through the coil, as well as through the whole engine. Not really bad, but you'd have to be careful about letting a wrench ground out.
07-21-2003, 10:30 PM
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Car: 95 E-150 & 07 Kawasaki ZX-6R
Engine: A slow one & a fast one
Transmission: A bad one & a good one
Axle/Gears: A weak one & a chained one
Oh alright..I gotcha.. So the coil doesn't fire unless it's got a completed electrical circuit?
07-22-2003, 09:03 AM
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Car: 4
Engine: 6
Transmission: 5
It makes more sense to disconnect the primary (12V) side of the coil and leave the secondary (high voltage) side alone.... then there's absolutely no possibility of spark
07-22-2003, 11:15 AM
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Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
It makes the most sense to get in the habbit of disconnecting the negative battery post every time you're working with something electrical, or for any part of the car for that matter.
07-22-2003, 12:00 PM
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Car: 1990 Camaro RS
Engine: Juiced 5.0 TBI - 300rwhp
Transmission: T5
Axle/Gears: 3.42 Eaton Posi, 10 Bolt
Originally posted by AJ_92RS
It makes the most sense to get in the habbit of disconnecting the negative battery post every time you're working with something electrical, or for any part of the car for that matter.
It makes the most sense to get in the habbit of disconnecting the negative battery post every time you're working with something electrical, or for any part of the car for that matter.
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