Tryloff
Well-known member
- Joined
- May 20, 2020
- Member Number
- 788
- Messages
- 205
Hey all, I'm not new to wrenching but this is my first boat. I have only owned it for a few month but I cant get it started. I'm going to write down everything I know about it to hopefully help answer many questions.
-When I got it, the cylinder head and cover were cleaned and had new gaskets so I assume someone was in there recently.
-I tested compression and have 105 on the lower cyl and 110 on the upper.
- points, condensers, and coils are all new and set correctly. .020 for the points as the manual and flywheel both say, and coils are positioned correctly.
-spark verified by a spark tester on both cyl. Looks like it may be weak? But sparks reliably.
I mixed a fresh batch of fuel and tried to run it off of that with new spark plugs. Still no start. It did backfire. Does anyone know how to check timing on this engine?
Any other suggestions are more than welcome.
-When I got it, the cylinder head and cover were cleaned and had new gaskets so I assume someone was in there recently.
-I tested compression and have 105 on the lower cyl and 110 on the upper.
- points, condensers, and coils are all new and set correctly. .020 for the points as the manual and flywheel both say, and coils are positioned correctly.
-spark verified by a spark tester on both cyl. Looks like it may be weak? But sparks reliably.
- new plugs. M42K part number listed in the manual.
- starter rebuilt, it spins very fast, can't get rpm reading while cranking from the front.
- I rebuilt the carb with both the parts manual and the service manual right in front of me. I'm fairly confident I did it correctly, but it's the first time I've done this specific carb.
- when I pulled the plugs out for compression test, they were soaking wet. I was able to fling moisture off on to the shop floor. I'm assuming fuel/oil but it wouldn't light on fire with a lighter held to it.
- the 5 gal gas tank was about half full when I got it. I put 1.25 gallons of fresh 40:1 in it before messing with it.
I mixed a fresh batch of fuel and tried to run it off of that with new spark plugs. Still no start. It did backfire. Does anyone know how to check timing on this engine?
Any other suggestions are more than welcome.