1984 Johnson J150TLCRD

[basstracker]

Motor quit last season, died in the water,after running good all day. Checked motor no spark to either side of motor. Did kill switch test, and key test, still no spark. Pulled flywheel no signs of any problems, changed stator still no spark? But I did get a reading with the meter from the charge coil of 70 volts on each side. Rechecked flywheel on inner hub where shaft comes through,looks like metal ring moved up some and some kind of material comming out of it? Does this center have anything to do with the power out or the sensor coil. Also disconnected main plug and jumped starter no help.. Please HELP!!

 

[Walker]

Re: 1984 Johnson J150TLCRD

Inplug the big red plug on the main wiring harness and jump the starter from the solenoid. See if you get spark then. That will isolate the engine from any outside wiring problems such as a bad kill switch or a grounded kill circuit in your controls.

 

[basstracker]

Re: 1984 Johnson J150TLCRD

I already tried that, but no spark.. thanks

 

[Walker]

Re: 1984 Johnson J150TLCRD

Sorry, I see the last line, I didn't read the entire post. <br />How about the power pack. They are the common failure when you lose spark. Does your motor have one or 2 packs. Would really be odd for both packs to die at the same time.

 

[basstracker]

Re: 1984 Johnson J150TLCRD

I'm going to try that next. I'm waiting on them to come in mail. I just hate to throw parts in to find out whats wrong!!

 

[basstracker]

Re: 1984 Johnson J150TLCRD

Does anyone know what other flywheels will work on this motor? years, hp .. Maybe I can find one on ebay??

 

[basstracker]

Re: 1984 Johnson J150TLCRD

Installed two new power packs and still didn't help, no spark. Could the sensor coil cause this? Or should I change the flywheel? THANKS

 

[emdsapmgr]

Re: 1984 Johnson J150TLCRD

The ring in the center of the flywheel is glued there. It provides the indication to the timer base as to when to fire each plug. If this ring moves away from the flywheel, that could be a cause of no spark. I know you can reglue the magnets on the outside of some flywheels. I am not aware that you can reglue the center ring. (you can reglue it, but you can't locate it properly. It is glued in a specific clock/degree location at the factory.) You may need a replacement flywheel.

 

[Dhadley]

Re: 1984 Johnson J150TLCRD

You can reglue the center hub magnet but you'll have to find someone who has the map. If no one in your area has one it may indeed be easier to find a flywheel.<br /><br />If the center hub magnet has moved, don't run the motor with it. In most cases the magnet moves and advances the timing which can burn a piston.

 

[basstracker]

Re: 1984 Johnson J150TLCRD

Thanks for the help, I'll try to find a flywheel. Can the sensor coil be checked out with a regular meter, or do I need a dva meter. The flywheel cast # 582403 , Will any other #'s work on this motor? Thanks again...

 

[Seasport]

Re: 1984 Johnson J150TLCRD

You should be able to check the sensor coil resistance with an ohmeter.<br /><br />There’s some good ignition system & electrical troubleshooting info to be found at:<br /><br /> http://outboardparts.com/omc/troubleshooting/trublshtinghlp.htm <br /><br />This includes info on the use of electronic test equipment. A DVA meter is pretty valuable but you can do some tests with an ohmmeter and ordinary voltmeter.<br /><br />Check out the following site for an ignition system troubleshooting guide (a lot of this is reprinted from the Rapair troubleshooting guide which can be downloaded from www.rapair.com)<br /><br /> http://www.boatpartstore.com/tips.asp

 

[basstracker]

Re: 1984 Johnson J150TLCRD

Installed new flywheel,, motor started right up!! But I still have a miss at idle. Checked out plugs bottom two on both sides were a little wet, top plugs were dry?? Compression on right side 80's and on left high 70's. Are these readings OK? Or should I rebuild the carbs?? Thanks

 

[emdsapmgr]

Re: 1984 Johnson J150TLCRD

Normal compression on that engine should be in the 90-95 lbs range. Compresssion readings will vary depending on how you take them. If you take the readings with all the spark plugs in the engine, readings will be lower. Remove all 6 plugs, then take your readings. Sounds like you have an ignition problem on the bottom two plugs.

 

[basstracker]

Re: 1984 Johnson J150TLCRD

I just changed the stator, both power packs, and the flywheel.. Last year I changed all the coils and wires? The only thing that wasn't changed was the timer base and rectifier..

 

[emdsapmgr]

Re: 1984 Johnson J150TLCRD

The rectifier should have no bearing on the spark issue. It is possible that it is the timer base, but they typically don't have a high failure rate. Try switching the two bottom coils (keep them on the same side)and see what happens first.

 

[Walker]

Re: 1984 Johnson J150TLCRD

You need to do a spark test. Dry plugs are an indication of a fuel delivery problem (carbs)