No spark on 1986 Johnson V6 200GT Advice would be appreciated.

[dgoldfarb1957]

Hello Forum Members, I look forward to hearing from anyone with experience in diagnoses and troubleshooting that will help resolve a no spark situation on my son's two stroke outboard recently acquired with the boat he purchased. I am unfamiliar with two stroke outboards. I purchased the factory manual. The motor did run during the my son's first inspection prior to purchase and then the seller could no longer get it to start. I found that none of the coils were putting out any voltage. I first established that the remote control was properly functioning. That the 20 amp fuse was good, that the neutral switch and kill switch were working. Then I did voltage and ohm tests on the stator. The voltage was 125volts, 5 volts below spec and the ohms were 870 per side also out of spec.. I purchased a new stator that had the proper ohms of 970;. This did not resolve the issue of no spark. Now I am back to checking the timer base. I find the manual to be awful since there is no detailed wiring schematic of the ignition system. It seems unlikely that two power packs would fail at the same time. I am including a photo of the terminal block and a diagram for the two yellow stator wires. It is the mirror opposite of how the yellow wires were hooked up when I opened the cover. Nowhere in the manual does it show where the black wires go on the terminal block nor are there any color specifications indicated in the manual to find where these other wires go that are displayed in the photo.. The manual is useless to a novice plus the fact it uses terminology such and "high resistance" for checking certain components without specifying a value whereas when I place my digital ohmmeter, I get infinite resistance. "OL" Is this the same as "high resistance". Does it mean there is an issue or not. The magnets appear to be in good condition on the flywheel and the wires appear to be in good condition. I just am Leary about paying another $300.00 for a timer base without the certitude that this will resolve the no spark issue. I look forward to hear from fellow forum members. Thank-you.

 

[boobie]

Where did you purchase the factory manual from ??

 

[dgoldfarb1957]

I ordered it on eBay. 1987 EVINRUDE JOHNSON OUTBOARD 60 THRU V6 MODELS SERVICE MANUAL P/N 507547 (381). In my opinion the manual is awful. It is really written for someone knowledgeable about two stroke Johnson motors. I'm having a hard time finding certain components. There are no clear pictures showing the different components by name. There is no detailed electrical schematic with the wire colors. There may be other manuals written with more detail for my motor.

 

[dgoldfarb1957]

UPDATE. In desperation, I went back to checking the cranking volts at the solenoid. It was below 9.5 volts and I have read this may be an issue. I checked the condition of both the deep cycle Marine battery and the standard battery and both gave indications of not having the CCA as written on the battery. I replaced one with a Marine/RV battery with 550 CCA. Again the voltage readings during cranking were lower than 9.5 volts. A while back I tested the solenoid per the instructions in the factory manual and everything was good. I therefore took car jumper cables and went directly from the positive of the new battery to the positive side of the solenoid and we finally got spark at the plugs. Now the issue is the motor will not fire so my next step is to check with a timing light the timing.

 

[racerone]

Facts for you.----If the flywheel does not spin fast enuff there will be no spark.------So take starter apart for inspection.---Do an ohm test from commutator to shaft with a digital meter.----Should read infinity.----Load test battery even if new.----Inspect battery cables.----Timing does not go out of adjustment except for a sheared flywheel key.------Don't know how to work on a starter ?---Just ask.

 

[dgoldfarb1957]

The starter is new and is not the issue. I have made progress to the extent that I am now getting spark on all cylinders. No the issue appears to be timing. I need to hook up a timing light when it is dark enough to actually see the strobe flash to verify timing,. I don't understand why timing would no longer be correct in view of the fact I did not physically remove the trigger and it was reported to me by my son that the motor did run fine when he first looked at the boat to purchase it.