I have two 200 HP 1990EXTD two strokes. On one engine the plug is always clean (brand new clean) when all other plugs have signs of use. The motors run good, but cylinder number two has me concerned. Here's a list of things done:
Replace Plug/Coil Wire with new
Swapped new plug/coil wire with known working one
swapped CDI Units on both engines
Checked carb jet for proper settings (1 1/2 turns back)
All resulted in in random flashes on timing light and no visual use on plug. All other plugs and the entire other engine have steady flashing.
What should I try and/or check next?
Thanks all,
Frank
PS the engine runs good, starts right up, plenty of power (40 MPH last weekend crossing the bar). But, it can't be right. THe timing light will completely stop for 5-6 seconds, then have normal flashes -Very Random. All others, nice and steady.
Replace Plug/Coil Wire with new
Swapped new plug/coil wire with known working one
swapped CDI Units on both engines
Checked carb jet for proper settings (1 1/2 turns back)
All resulted in in random flashes on timing light and no visual use on plug. All other plugs and the entire other engine have steady flashing.
What should I try and/or check next?
Thanks all,
Frank
PS the engine runs good, starts right up, plenty of power (40 MPH last weekend crossing the bar). But, it can't be right. THe timing light will completely stop for 5-6 seconds, then have normal flashes -Very Random. All others, nice and steady.
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