showngo2000
Seaman Apprentice
- Joined
- Apr 22, 2017
- Messages
- 39
I'm in the process of reviving a 59 Evinrude 35hp (35516). The motor has been sitting for quite some time, so I read the "awake a sleeping outboard" thread to get going. Here's what I've done:
* Let the engine sit for 24hrs with a little bit of 2 stroke oil in the cylinder head, while sitting with the spark plug holes straight up.
* Compression - 90PSI on both cylinders, a little low, but granted it has been sitting for a while
* New Coils, Condensors, Points (gapped at .020), Spark Plug wires (7mm copper core), Spark Plugs (JC6 gapped to .030)...have spark verified with tester
* Carb Clean - disassembled and cleaned.
* New fuel lines everywhere
The engine tries to start, and then backfires super loud, with some smoke coming out of the exhaust. It sounds like it is trying to run, but backfires after about 10 seconds of cranking with the starter. What would cause this? I've torn the flywheel off again, and verified that everything is ok, including the crankshaft key, nothing is rubbing/out of the ordinary, and re-torqued the flywheel to 720in torque. It still backfires.
Help! Thanks!
* Let the engine sit for 24hrs with a little bit of 2 stroke oil in the cylinder head, while sitting with the spark plug holes straight up.
* Compression - 90PSI on both cylinders, a little low, but granted it has been sitting for a while
* New Coils, Condensors, Points (gapped at .020), Spark Plug wires (7mm copper core), Spark Plugs (JC6 gapped to .030)...have spark verified with tester
* Carb Clean - disassembled and cleaned.
* New fuel lines everywhere
The engine tries to start, and then backfires super loud, with some smoke coming out of the exhaust. It sounds like it is trying to run, but backfires after about 10 seconds of cranking with the starter. What would cause this? I've torn the flywheel off again, and verified that everything is ok, including the crankshaft key, nothing is rubbing/out of the ordinary, and re-torqued the flywheel to 720in torque. It still backfires.
Help! Thanks!