Johnson 1981 V-4 90 no spark on #1

[bonitasprings]

Re: Johnson 1981 V-4 90 no spark on #1

I did replace it but it wouldn't start. Turns out the ignition wire got toasted so I ran a new wire w/fuse (25 amp...will change to 20 thanks) from switch to solenoid. Started right up...except for # 1. Some of the wires coming from under the flywheel looked and feel a little spongy. Blk/yell especially so I cut that wire and inspected it and then butt connected it. When I did that I got spark in #1...but only for a few minutes. disconnecting the stop circuit and starting the engine doesn't cause any changes though (also, same with the rectifier).

I tried to follow the instructions for checking the circuits from stator but when I do the needle on the meter doesn't move...same for the good side. Admitedly, I am electronically inept. Should the meter be set to ohms? (dah!) black test grounded and red to the prongs in the 2 and 4 prong plugs?

bktheking-is that a picture of a toasted stator?

Can a stator be bench tested?.....what could cause ONLY ONE CYLINDER (the SAME one) not to fire? even when you move PP and coils around? A stop circuit couldn't do that could it? It would shut down a side...not just one cylinder...right?

This boat starts right up. I especially like that push choke (primer?)...Would love to see how it is with all cylinders firing.

 

[bktheking]

Re: Johnson 1981 V-4 90 no spark on #1

I really don't think you should troubleshoot any more until that flywheel is pulled, it may be a visual that leads you to figure out what is going on. Make sense?

 

[bonitasprings]

Re: Johnson 1981 V-4 90 no spark on #1

Yup...agreed.

 

[bonitasprings]

Re: Johnson 1981 V-4 90 no spark on #1

Well...I couldn't resist. got some good instruction on resistance testing and tested the sensor coil resistance. It failed miserably. On the bad side (starboard) between A and B was fine (40)btween A and C there was no movement of the needle at all. On the good side between A and B reading was 80 and between A and C was 40. Project is at a standstill for now (I is Po...) Thanks for all your help. Will repost when starting back up work on it.

 

[bktheking]

Re: Johnson 1981 V-4 90 no spark on #1

It's like I thought, 1 of the sensor coils is gone in the timer base, out comes the wallet.

Glad you figured it out.

 

[bonitasprings]

Re: Johnson 1981 V-4 90 no spark on #1

Yup...160 bucks up the street at Marina Mike's. Feels good to at least have an answer tho. Thanks for all your help.

Life goes on