lazy Starter... ?

mk1

mk1

PUDDLE - BLASTER
Location
Ireland,West Coast. "Wild-Atlantic-Way"
Hi dudes , need your help... I`m starting up my ski after the Winter layover , it`s an old SN 650 (has a 701 twin carb motor fitted) It will spin like a top without the spark plugs installed..., but spin slowly with the plugs screwed in... ? The plugs have a nice spark. What is happening..... ? Thanks in advance...
 
pigpen

pigpen

Location
kalispell
mk1 said:
Hi dudes , need your help... I`m starting up my ski after the Winter layover , it`s an old SN 650 (has a 701 twin carb motor fitted) It will spin like a top without the spark plugs installed..., but spin slowly with the plugs screwed in... ? The plugs have a nice spark. What is happening..... ? Thanks in advance...
Click to expand...

Your making compression when the plugs are in causing much more resistance for the starter to turn it over.


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DocPhil

DocPhil

Location
Michigan
+1 on the battery. I just had the issue with my wife's couch (sea doo spark). I charged the battery fully and it read 13.4 volts. Ski wouldn't turn over. I was on my way to get it load tested when I said F it and got a brand new AGM battery. Fixed up first try. After I tore everything apart of course.

Get a new battery or get it load tested first. Then go from there.
 
john zigler

john zigler

Vendor Account
Location
wisconsin
Could be bad battery, cables, or starter.

Do a volt test on the battery while sitting. Fully charged should be 12.5+ volts. When cranking it should NOT drop below 10.5 max. I like to see 11+ when cranking.
 
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