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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

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Old 03-29-2011, 08:13 AM   #1
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Shouldn't the tach 'bounce' if it is getting spark?

I forget.
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Old 03-29-2011, 08:27 AM   #2
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Quote:
Originally Posted by djmtsu View Post
Shouldn't the tach 'bounce' if it is getting spark?

I forget.
Yes, but that only indicates a specific coil is firing.

Last edited by vex; 03-29-2011 at 08:31 AM.
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Old 03-29-2011, 10:52 AM   #3
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Pull the plug wires and put a screw driver to the tip of them and see if there is a spark arcing.
If there is, pull your two leading plugs, and yer EGI fuse and turn it over and blow all the gas out of it. Squirt a little motor oil in there while yer at it.
Try that.
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Old 03-29-2011, 11:05 AM   #4
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Quote:
Originally Posted by RXTASY View Post
Pull the plug wires and put a screw driver to the tip of them and see if there is a spark arcing.
If there is, pull your two leading plugs, and yer EGI fuse and turn it over and blow all the gas out of it. Squirt a little motor oil in there while yer at it.
Try that.
As in, screwdriver in one hand, and one plug wire end in the other, right? how far apart should I hold them?

If there's no spark arcing, that means my trailing coil is not functioning, then, right?
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Old 03-29-2011, 11:20 AM   #5
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I typically just leave a plug in the end of the wire and ground it, have a helping hand to turn it over, and while that is going on you can observe whether or not there is spark. Screwdriver works too, just a little cumbersome to me.
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Old 03-29-2011, 11:58 AM   #6
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Quote:
Originally Posted by FC Zach View Post
I typically just leave a plug in the end of the wire and ground it, have a helping hand to turn it over, and while that is going on you can observe whether or not there is spark. Screwdriver works too, just a little cumbersome to me.
This.
But, having been zapped before, I'm now paranoid and I use a set of pliers with an insulated handle to hold the plug by the boot on the wire.
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Old 03-29-2011, 10:52 AM   #7
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Originally Posted by tweiss3 View Post
Oops, works on my S5. I forgot. Pull the plugs and crank for 15 seconds, reinstall plugs and see if it starts up.
Thanks for jumping in here!

What will that do? If it's a cure for flooding, the kill switch works for that. If it's supposed to cute something else, lemme know and I'll try it!

Quote:
Originally Posted by djmtsu View Post
Shouldn't the tach 'bounce' if it is getting spark?

I forget.
My tach 'bounced' all of once in the whole time I was trying... so it does sound like I may not be getting spark. What would I do to test/confirm this?
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Old 03-29-2011, 12:50 PM   #8
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Thanks for jumping in here!

What will that do? If it's a cure for flooding, the kill switch works for that. If it's supposed to cute something else, lemme know and I'll try it!
Pulling the fuse does essentially the same thing your fuel cut switch does. Putting oil in the engine helps build compression if it's been flooded.
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