testing and ignition coil???

[bow tie klr]

How would I test an ignition coil? Im thinking I may have a problem with the #1 coil. Ohh and this is a 2005 GP1300r with timing key, head work, vf2's, plenum, plate, grate, and some small things.

History...

3 weeks ago my ski wouldn t crank and the cdi would click where that coil is located. after a little while it cranked back up and ran fine.

Then last weekend at mudbug I pushed off the dock at the crawfish boil and it was hard to start and when it did start it acted like it fowled a plug or was missing really bad. Had to be towed back to the dock. Checked plugs, replaced just in case-- same problem. Checked compression and all was good 160-160-155.

So today Im going through it and just testing some parts. I took my tach and checked the pluses on each wire. On the back two jugs I would get 1600-1610 steady, on the front jug it would fluctuate between 920 to 1160 to 1620 and back. I could wiggle the signal wire for the tach and it would go to 1600-1620 but would start jumping around.


I have a friend who has a spark tester so I will be borrowing that to see if it is the coil or not. Is there another way to test it?


Thanks for any info!

[bow tie klr]

any suggestions????

[bill cosca]

is the coil is bad the engine will crank anyway
the click is the starer relay
i will check the batery conection ( clean the conectors )
these sound like a bad batt con or a bad batt

[bow tie klr]

At first I thought i may be the battery also. Its fine. New, full charge, checked load while running and all was fine, all termilas tight and clean.

I thought it was the starter relay in the CDI also. But when I opened it ther sound was coming from the coil. But after letting ti sit for a few hours it crankd up like nothing was wrong. Very weird and hard to diag.

any other info would be great...