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  Soarer Central * Mechanical - Common * Possible coil problem on v8!!! what can i do to fix it Previous Previous    Next Next  

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Andrew Bennett
Tinkerer
ACT
GT limited

Posts: 29
Reg: 10-2005

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 Monday, April 10, 2006 - 07:17 pm, by:  Andrew Bennett (Fc_racer) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
Hey guys,
Lately when driving my car at fairly low speeds under low load my car sometimes misfires. Im fairly sure it is the coils. Im going ot a dyno day on the 22nd and i want to get this problem sorted before then if I can. What do you guys suggest i do??

cheers
-Andrew
Tom Richards
Tinkerer
nsw
V8

Posts: 38
Reg: 08-2005

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 Wednesday, April 26, 2006 - 09:06 am, by:  Tom Richards (Tomr) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)
you can measure the primary and secondary resistance of the coil.

remove the plug and HT lead to the coil.

measure between the two pins on the low voltage plug. should read close to a short circuit ( couple of ohms.

measure from either of these pins to the HT pin. should read ~ 12k ohms.

If the secondary is a lot higher than ~12k, breakdown and missing will occur.

you can compare the readings of the left and right bank

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