GS550 Sparkplug cap

[Recoush]

According to the GS1000 Manual :>)
Ignition coil resistance Primary should be 4 OHM
Ignition coil resistance Secondary is 4K
1K=1000 so that 4000 ohms

Farther into the manual the chart on page 11-2
Shows primary as 2-6 ohms
And secondary as 11-17K

With the coil disconnected from the bike
Measure from the two leads =X
Measure from each lead to the plug wire each =X and =X
Unless you have a HV Meter you can’t check the output it someplace between 4000-10000 Volts

Word of advice they either work or don’t
Easiest way is use a jumper cable and ground the spark plug where you can see it and watch the spark to see if it fires

With the gas off please and other spark plug wires removed
also dyna ignitions have different values from the suzuki stock coils
Safety 1st :>)
hope this helps

[Recoush]

one other easy test for about 5 bucks you can buy a tool I know another tool really but this one can be used for other electrical test too
any auto store carrys these

ebay link just an example no interest otherwise click on the photo

http://www.ebay.com/itm/2-IGNITION-SPARK-PLUG-AND-COIL-TESTERS-/300915336955?pt=Motors_Automotive_Tools&hash=item460ff3a6fb&vxp=mtr

this plugs into your spark plug wire and then to the plug no need to remove the plugs :>)
good luck

[Steve]

You want "real life"?

Hold on to the wire, crank the engine. If you get the snot shocked out of you, the coil is working.

.

[kokar]

I have a better idea Steve !

[kokar]

simulate low speed

https://vimeo.com/68059473

simulate high speed

https://vimeo.com/68059472

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[Steve]

I have a better idea Steve !

Nice setup.

It's kind of hard to see how the plugs are grounded. Is that piece of angle they are threaded into grounded to the plate that everything else is on? Or do you run a separate wire?

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[kokar]

Steve that is a little tricky,
i figured out from the service manual ,

a simplified schematic is this

[Steve]

Yeah, I got the book part, I was wondering about your test setup. How are the plugs grounded?

After watching the video, I am guessing that they are threaded into metal angle stock, which is somehow fastened to a metal base plate, which is connected to everything else. Correct?

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[kokar]

how about this

[kokar]

This is the schematic
the switch J1 simulate the low and high speed

[Steve]

OK, enough of the pictures and diagrams, let's talk nuts and bolts.

I see that the spark plugs are threaded into something that looks like angle aluminum. Is that aluminum angle bolted to a metal base plate?

It appears that some other parts are also mounted, like the coil. It is not necessary for the coil to be mounted to a ground point, so that is irrelevant.

I see other parts, like your ignitor setup. Surely that has power going to it, both positive and negative wires. Does that negative wire also connect to the metal plate that is holding the angle aluminum and the spark plugs?

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[kokar]

OK, enough of the pictures and diagrams, let's talk nuts and bolts.

I see that the spark plugs are threaded into something that looks like angle aluminum. Is that aluminum angle bolted to a metal base plate?

the purpose of the angle aluminum is to hold the sparkplug in safe place
and electrically connect the two sparkplug

It appears that some other parts are also mounted, like the coil. It is not necessary for the coil to be mounted to a ground point, so that is irrelevant.

this setup is from an old project !
click --> http://www.youtube.com/watch?v=hOUxB73b-WE

I see other parts, like your ignitor setup. Surely that has power going to it, both positive and negative wires. Does that negative wire also connect to the metal plate that is holding the angle aluminum and the spark plugs?

the connection with the ground is not affect the circuit
I think the following video will answer all your questions

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the video will be with you in a few minutes

[kokar]

I think the following video will answer all your questions

https://vimeo.com/68163163

https://vimeo.com/68167438

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[Steve]

Just watched both videos, they raised more questions than they answered.

I see two spark plugs that have what appears to be some bare copper wire between them. That is great, but where is the ground connection that simulates the engine that the plugs normally screw into? You have to have a complete path for an electrical circuit. You have current coming through the plug wire and jumping across the gap, ... to ... what?.

In your earlier video, the plugs appear to be screwed into some angle aluminum, and that angle appears to be resting on something that looks like a metal plate. My question all along has been "is the angle bolted or otherwise firmly attached to the metal plate to complete the electrical circuit?"

I am happy that it works for you, sorry to bother you so much, I'm outta here.

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[ThrottleBack]

I think that's what he's asking for.

I would guess 5K, but that's just a guess, haven't bought any for a while.

CAll Z-1 they have the right ones.

When I read it I missed where he said "cap" in the actual post and my brain clicked into the assumption that he was asking which level of NGK to run (ie platinums and all the crap).

OP sorry about that. Until I run out of Vicodin i'm blaming that.