Strange spark issue, Help please

All to do with wiring, charging or just trying to figure out whats gone wrong.

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Brokenarrow
Still in the Driveway
Posts: 1
Joined: Fri Jul 15, 2016 4:59 pm
Country: USA
Suzuki 2-Strokes: 97 Tigershark Montego

Strange spark issue, Help please

Post by Brokenarrow »

Issue is with a '97 Tigershark jetski, the engine is a 640cc Suzuki two-stroke. Engine turns over good but will not run on both cylinders. With one spark plug removed (that wire grounded with a screwdriver to the head) it will fire right up and run on one cylinder, same with either cylinder. With both plugs in it will not fire. I checked compression, 115 & 120, I tried different plugs. Will someone please explain to me wth is going on here? I talked to a very good pwc mechanic, he said the cdi ignition system normally either works or it doesn't work at all, (not intermittant).
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Jimroid
To the on ramp
Posts: 309
Joined: Sun Feb 21, 2016 8:32 pm
Country: USA
Suzuki 2-Strokes: GT500 T500 GT750
Location: Pisgah Forest, N.C. USA

Re: Strange spark issue, Help please

Post by Jimroid »

I' m guessing dual lead single coil? Both plugs firing every 180 degrees? viewtopic.php?f=29&t=12311" onclick="window.open(this.href);return false; Maybe find a coil, even if primary resistance is not correct, just for a quick test run. You never know!
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Alan H
Moto GP
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Joined: Thu Feb 16, 2012 11:50 am
Country: England
Suzuki 2-Strokes: 4 x GT550s - J, M, A, B.
Location: The Republic of South Yorkshire

Re: Strange spark issue, Help please

Post by Alan H »

Try new plug caps.
Think of how stupid the average person is, then realise that half of them are more stupid than that.
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