Johnson 99' 70hp 3cyl 2stroke

[Glen Beau]

After running this engine for a while at 3500-4500<br />RPM I bring it back to idle and it dies.<br />If I wait 10 min she will start again otherwise no go.<br />There is no spark in cyl #1 or #3 yet there is in #2.<br />I have replaced Fuo Pump. <br />I have replaced new campion plugs to spec. <br />It is not air to tank,or clamps (air into lines).<br />I have replaced thermostat.<br />Could it be crank sensor, power pack (was replaced), Stator (fires #2?) <br /><br />What is the problem? Glen Thanks for any usefull help

 

[rickdb1boat]

Re: Johnson 99' 70hp 3cyl 2stroke

Glen,<br />Is there ever spark to #1 & #3? When cold? If so,<br />run the engine on the Muffs or in a Tank. Get a Heat Gun or Hair drier and point it closely at the power pack and see what happens.This will simulate higher operating temps. If it loses spark then, the pack is bad. It sounds like like a bad pack even though it was replaced.