cubsfan02449
Cadet
- Joined
- Jan 3, 2011
- Messages
- 18
J30TECCE I have had this motor a couple months. It sat a lot in previous years. Started it last weekend pulled boat up on the bank to let it idle while parking the truck. got back to the boat and it was dead. Cranked on it for 20 minutes and couldnt get it to fire. When i got home pulled the plugs and only 1 plug (top cylinder) is firing. the bottom plug has no spark. I have done a compression test both cylinders have good pressure. I have fuel, cleaned carb 2 months ago and have put at least 15 hours on it since then. I did have a broken wire on the rectifier (red wire). I replaced with new rectifier today. I swapped the coils and still had same spark plug not firing on the bottom cylinder. All wiring looks good from 5 pin connector to power pack to coils. Cleaned all grounds. I thought i did see spark for a split second on the bottom plug when i was cranking the motor and wiggling the power pack wires. I have done a stator resistance check per the Johnson manual and i had .06 when black lead connected to stator yellow/blue wire and red connected to yellow/gray then red again connected to yellow wire. the manual says ohmmeter should read 0.27 +or- 0.05
then the next test in manual says to switch ohmmeter to high ohms scale and connect one lead to engine ground and the other to the stator yellow/blue wire. The manual says it should show a very high reading. When i did this test i had nothing for a reading. Does this suggest i have a grounded stator? I havent had flywheel off. Or is the power pack the culprit. Thanks for any help
then the next test in manual says to switch ohmmeter to high ohms scale and connect one lead to engine ground and the other to the stator yellow/blue wire. The manual says it should show a very high reading. When i did this test i had nothing for a reading. Does this suggest i have a grounded stator? I havent had flywheel off. Or is the power pack the culprit. Thanks for any help
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