1988 Johnson 28hp only starting for a bit when wires are switched

[Viperwhy]

the motor will start for a bit when I put the bottom spark plug wire to the top cylinder and top to bottom. When it’s not switched it sputs and pops but doesn’t go what could it be

 

[racerone]

My wild guess is that wires from CDI / powerpack to the coils were switched by a club fisted individual.-----Orange / blue stripe should be on the top.----What else do you know about this motor ?----How did it run for you last season ?----Post the compression test numbers here.

 

[oldboat1]

Johnson Carburetor Parts for 1988 28hp J28ESLCCR Outboard Motor

Online inventory of Johnson J28ESLCCR Carburetor parts for 1988 28hp outboard motors. Buy a genuine OEM or aftermarket part.

www.marineengine.com

On this carb, the needle up on top (idle screw) may need adjustment. Turn clockwise until lightly seated, then open c.clockwise 1 1/2 turns. See if the engine starts and runs. After warmed up, if it runs, turn it clockwise until it backfires or stalls, the c.clockwise 1/4 turn. Let it run a bit if success. Make sure the cooling water is about half way up the shaft.

 

[racerone]

Maybe check for a sheared flywheel key as well.

 

[oldboat1]

Maybe check for a sheared flywheel key as well.

Need to take off the FLYWHEEL for that with the correct puller, and check the key in the crankshaft. The key is a half-moon shaped piece -- could be sheared or missing. If the flywheel key shaft is not correctly lined up with the crankshaft key/keyshaft, timing is affected.

 

[Viperwhy]

My wild guess is that wires from CDI / powerpack to the coils were switched by a club fisted individual.-----Orange / blue stripe should be on the top.----What else do you know about this motor ?----How did it run for you last season ?----Post the compression test numbers here.

Well that is what was causing it the motor came with the hull and trailer, it’s starts but idles like **** you gotta move the neutral throttle to keep it going, but now there’s a visible purple spark on top of the top coil could that be causing it?

 

[Viperwhy]

Need to take off the FLYWHEEL for that with the correct puller, and check the key in the crankshaft. The key is a half-moon shaped piece -- could be sheared or missing. If the flywheel key shaft is not correctly lined up with the crankshaft key/keyshaft, timing is affected.

Getting the flywheel off took us a few weeks wouldn't move without heat, key looks fine and all wires and stuff look good aswell

 

[racerone]

Should never need heat to take a flywheel off a 25 / 28 / 30 HP model.----I do not see answers to questions.----Good luck sorting this motor out.

 

[Crosbyman]

looks good isn'T goint to cut it... you must inspect and test everything.

 

[Viperwhy]

Should never need heat to take a flywheel off a 25 / 28 / 30 HP model.----I do not see answers to questions.----Good luck sorting this motor out.

Well it wouldn’t come off without it

 

[racerone]

You were using the wrong puller or the wrong method !