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Compression Test; What did I fry?

Old 07-13-2010, 08:30 PM
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Default Compression Test; What did I fry?

So, Like an idiot I did a compression test today on my stock 98 Civic LX without disabling the dizzy and injectors. Long story short, No spark now.

What did I fry? The ignition Coil or the ICM or both? Or could it be worse than that?
Old 07-13-2010, 08:36 PM
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Default Re: Compression Test; What did I fry?

Coil
Old 07-13-2010, 08:40 PM
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Default Re: Compression Test; What did I fry?

I sure hope your right sir!
Old 07-13-2010, 08:42 PM
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Default Re: Compression Test; What did I fry?

Cranking the engine with a plug wire ungrounded is an extremely common way to blow the coil. Here's how to test:

Old 07-13-2010, 08:51 PM
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Default Re: Compression Test; What did I fry?

Mines TEC

A and B reads 00.8 - 00.9 fluctuating.

A to Spring reads 13.49

Intertesting, It kinda seems like its bad, but maybe not.


Thanks man, I was looking for that how to and couldnt find it. I appreciate that!
Old 07-13-2010, 08:57 PM
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Default Re: Compression Test; What did I fry?

If any reading is out of spec, the coil is bad.
Old 07-13-2010, 09:02 PM
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Default Re: Compression Test; What did I fry?

Nice! Maybe I will be driving my car to work tomorrow after a quick morning coil swap.

Thanks again man!
Old 07-14-2010, 06:31 AM
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Default Re: Compression Test; What did I fry?

Thanks again Ron, I swapped the coil out and it fired right up. I really appreciate you taking the time to help me out, HT would be a much better place if everyone was like you.
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