How to check for spark?

JMKZHI
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29 Nov 2008 08:24 - 04 Dec 2008 10:03 #249920 by JMKZHI

How to check for spark? was created by JMKZHI

To check for spark... Can I pull all 4 plug wires off the plugs, then check for spark using a spare plug? Checking one plug wire at a time? Thanks.

Last edit: 04 Dec 2008 10:03 by JMKZHI.

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rstnick
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29 Nov 2008 08:28 #249921 by rstnick

Replied by rstnick on topic How to check for spark?

Take all 4 plugs out and reconnect them to their caps, then lay them on the engine so metal is touching metal.
Now turn the Ignition on and either use the kick starter or elec. start to turn the engine over.
You will see sparks if their working.
Dim lighting helps.

Rob
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1978 KZ650 C2, 130K kms, Delkevic ex, EI, CVK32, PMC easy clutch, ATK fork brace, steering damper, braced swingarm, 18" Z1R front wheel.
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JMKZHI
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29 Nov 2008 08:41 - 04 Dec 2008 10:05 #249927 by JMKZHI

Replied by JMKZHI on topic .

So I can't do it the other way mentioned?
Just not 100% sure it's okay to do it as asked - it being an old bike.

Last edit: 04 Dec 2008 10:05 by JMKZHI.

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fixer5000
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29 Nov 2008 11:19 #249936 by fixer5000

Replied by fixer5000 on topic How to check for spark?

sure can.. any way you see fit that works. motor will spin over easier without plugs in there though.

1978 kz650b pretty much stock
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rstnick
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29 Nov 2008 12:08 - 29 Nov 2008 12:09 #249938 by rstnick

Replied by rstnick on topic How to check for spark?

If you use a spare plug, you wont know if the plug in the engine is any good.
Although it will show you if the electrical circuit to the spark plug wire is working.

Last edit: 29 Nov 2008 12:09 by rstnick.

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JMKZHI
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29 Nov 2008 14:08 - 04 Dec 2008 10:04 #249954 by JMKZHI

Replied by JMKZHI on topic .

It's a simple question. Just not 100% sure it's okay to do it as asked.

Last edit: 04 Dec 2008 10:04 by JMKZHI.

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PLUMMEN
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29 Nov 2008 18:10 #249976 by PLUMMEN

Replied by PLUMMEN on topic How to check for spark?

carefull holding onto plug wires,yeah i know its a complicted story involving a plow truck and a back flip!:laugh:

Still recovering,some days are better than others.

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rstnick
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29 Nov 2008 19:36 - 29 Nov 2008 19:37 #249984 by rstnick

Replied by rstnick on topic How to check for spark?

The reason for doing it w the plug wires removed is because I don't want to run the engine in the garage.

I understand, but pulling out all 4 plugs and hooking them up, laying them on the outside of the engine and turning the engine over while it's ON will not actually start the bike.
And you can see and test all 4 at the same time.

Last edit: 29 Nov 2008 19:37 by rstnick.

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JMKZHI
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29 Nov 2008 20:24 - 04 Dec 2008 10:33 #249990 by JMKZHI

Replied by JMKZHI on topic .

rstnick wrote:... but pulling out all 4 plugs and hooking them up, laying them on the outside of the engine and turning the engine over while it's ON will not actually start the bike.

Yes. I know.

My original question was kept simple intentionally.
Wasn't 100% sure if there was any harm in having the other 3 plug wires disconnected & flopping around while checking the 4th one.

Last edit: 04 Dec 2008 10:33 by JMKZHI.

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timebomb33
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30 Nov 2008 13:22 #250065 by timebomb33

Replied by timebomb33 on topic How to check for spark?

buy an actual spark gap checker and you can test the strenth of the spark at the same time they are adjustable so you can measure the gap that the ignition system will jump and still work

1973 z1 2-1974z1-a,2-1975z1-b dragbikes1015cc+1393cc, 1977kz1000,1978kz1000,1981kz1000j, 1997 zx-11, 2000 z12r,1428turbo nitrous pro-mod and a shit load of parts thats all for now leader sask.,CANADA
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