Have you ever seen this?

[jitterbug127]

I’m trying to dial in the low speed idle and give my new head gasket some time to break in. I put the motor in gear at a very low speed and saw it doing this. I don’t even know what to call it or what caused it. It’s like going in and out of gear.

 

[Chris1956]

That is your second cylinder firing and then not firing. The question is why? See what the spark plugs look like.

It could be carburation, spark or possibly water in the cylinder.

I never thought head gaskets needed a "Break-in" period. You might retorque the head bolts.

 

[jitterbug127]

That is your second cylinder firing and then not firing. The question is why? See what the spark plugs look like.

It could be carburation, spark or possibly water in the cylinder.

I never thought head gaskets needed a "Break-in" period. You might retorque the head bolts.

Would you happen to know torque setting for head bolts? I’ve read multiple places 96-120 in/lb. I did 120 I’m a circular pattern

 

[jitterbug127]

I read about them breaking in, but I could be mistaken (new repair for me) spark plugs are new and look good. I’m going to check my spark this evening. I’ll report back when sun goes down much easier to see

 

[saltchuckmatt]

First off, learn how to make a YouTube video out of your phone video. I'm tired of having to download all these things just to see it running. Very easy and fun to do you do a free account and make a video and there's some other things to learn, and then send the link.

 

[saltchuckmatt]

Second thing is is tomorrow's mother's Day so I think maybe it just lay off. But I believe the reason why it's hopping in at a gear is because you don't have a shift cable on your shift handle. By keeping the handle in the right position it very may possibly just stay in gear, but what the hell do I know.

Matt

 

[Faztbullet]

Its cavitation in barrel and prop is loading and unloading cause clutch dog to jump gear ramps

 

[saltchuckmatt]

Its cavitation in barrel and prop is loading and unloading cause clutch dog to jump gear ramps

A much better description....

Watch the shift handle in the video.

 

[jitterbug127]

Well I lost Spark in both cylinders. I’ll take flywheel off more to inspect. Here is a new one….my test barrel is full of 2 stroke. I left my motor in the rest barrel lSt night and I’d say 2 if my 6 gallons of gas are gone. Never seen this. No idea why it happened. I leave like this often.

 

[Crosbyman]

first oil in water is normal for a 2 stroke. 25% oils the innards... 50% may burn in the cyl and 25% gets flush right out the exhaust ports on the up strokes so dont worry about oil in the water.

fuel if the tub.... if the tank was above the engine and floats don't seal well gravity drained your gas tank. if the tank does not vent .... air pressure build up can force fuel passed the inlet needle & fill the carb and then drain in the wateer tub.

 

[saltchuckmatt]

Well if you took any engine and pop it in and out of gear, do you think that can't hurt the electrical?

We know very little about this outboard.

 

[jimmbo]

It took only a few seconds to Download the Video.(I have a slow, 30mb copper DSL service. Phone company has been threatening disconnection if I don't switch over to Fiber).
Watching the Shift Lever boogieing like it is listening to 'shaking all over', you might consider pulling the Gearcase apart and examining the Gears and Clutch Dog, before putting any money into the Fuel or Ignition Systems

 

[jitterbug127]

Well if you took any engine and pop it in and out of gear, do you think that can't hurt the electrical?

We know very little about this outboard.

You are correct. I know very little about the outboard. I did some diagnostic tests and digging last night.

115/120 compression
No spark-woodruff key is sheared.
I was thinking motor going in and out of gear like that might be related to being run in a barrel. I took it to the local lake. It fired right up and ran good for a little while. Then shook violently and died. I took flywheel off and sheer pin was sheared. Ordered new woodruff key. I’ll have to figure out why outboard did that.

 

[Crosbyman]

fix what is wrong broken key shear pins etc... inspect /refurbish ignition if needed set timing check for good sparks clean/adjust carburator check gear oil for metal chips etc...

no sense chasing to many rabbits .

and btw post your engine mdl #

 

[jitterbug127]

25903b

1969 Evinrude 25 hp long shaft motor. Barn find, picked it up cheap. In hopes be an alternative to go fishing until my 1996 is ready.

 

[Crosbyman]

do you have the johnson service 450 page + Red /white manual which covers theTN JW AD CD FD QD RD series (Johnsons) all cousins of evinrude line.
you have a plain magneto engine easy to fix ...
manual has detailled pics of all parts and service procedure

1922-1964 Johnson 302231 Outboard Service Manual

Johnson Outboard Motor Service and Repair Manual # 302231 Tenth Edition covers all Models 1922-1964 .pdf download

watercraftmanuals.com

 

[tphoyt]

Maybe the previous owner had the flywheel off and didn’t torque it down or lost the key and made a new one form something laying around. Or maybe it just happened as it does happen.
Best

 

[cyclops222]

I pulled the flywheel off of a 1986 30 hp. That had 2 ....yes 2 bad keys shear off. The dealer asked me how tight I was doing the nut. Tight enough I said.
""" NO WAY """" Was his answer. He said I HAD TO use a accurate Torque bar set to 90 pound feet. The 4th key with a torque bar / wrench has held since 1987.

 

[kbait]

Lots of folks think the key drives the flywheel, but it is the interference fit of tapered crank to flywheel (torqued correctly). The key just orients/times the flywheel/magnets to engine stroke when installing flywheel.

 

[saltchuckmatt]

Yes....I've seen many people lube the flywheel taper when all they need to do is clean it.

If you've done that, clean and use lapping compound.

Flywheels are tough, but they have their limits.