Issue on saturday want your opinion to compare to mine

[curtiscapk]

Those of you that dont know rebuilt motor 20 hours at least. It's been better than expected . On saturday we were cruising WOT when there was just a slight hiccup then it was fine, five minutes later it just quit. ... Wouldnt start at all. Pulled plugs seemed like good compression, plugs looked fine. A fisherman was close by luckily (lake was practically empty of boats) He started towing us I tried to start and it fired right up. Ran fine at normal cruising speed 14 mph at 4000rpm. 30 minutes later almost to dock samething, it justt died. Restarted after 2 minutes, then died at dock and we swam it in 20 yards. Then started up to get on trailer. Got back to lots and it fired right up dry for 1 sec. In the morning hooked up the hose and fine again.

What do you think?

( I used my phone sorry for typos)

[jimrs]

Sounds like it is intermittently broke.

Sounds like power pack or something in the electric system is getting hot and breaking down.

Other than that I have no opinion.

[Pammy]

If it was a motorcycle, I would say it's a coil. If you can get it to replicate, check the spark before you let it cool off.

[Shopguy]

fuel tank vent, primer bulb collapsed, and check for spark right after it dies.

[dtruly]

In any other kind of motor that sounds like a fuel filter...clogs up under use, the clog drifts loose when not under pressure and then re-clogs when under pressure. I'm not sure in an outboard where or what kind of fuel filter may be present.

[curtiscapk]

DING DING! I was thinking bulb and line. He put a brand new filter on when it was rebuilt, however my dumb ass still has the old main line coming from the tank and a 4 year old bulb. So the filter could be clogged already. This was my thinking and my neighbors...

[LocoCoco]

fuel tank vent, primer bulb collapsed, and check for spark right after it dies.

x2.




LC.

[Ron Burgundy]

Yep sounds like a gas issue. Curtis has lots of gas issues.

[curtiscapk]

Brett has been talking to my wife....

[Bamaman]

Yes, Yes and Yes. I agree. Fuel restrictions seem to cause problems first.

I hope they put a new water pump in when the engine was rebuilt.

I once was in a boat that overheated due to a bad water pump, and the engine seized slightly. When it cooled off, it ran okay for a few minutes before losing power again.

[GregF]

The first step when you are thinking fuel is a portable tank with a different hose setup.
I keep a spare hose on my boat. I can just stick the end in a jerry can for a test.

[evinrude2stroke]

Same thing happened to me 2 years ago. would run fine then shut down, after a while would start up just fine again. it was the connection to the fuel tank. Collapsed ball was the hint, although I didn't see it. My marina did as they towed me in.

[NH Tooner]

Just because compression seemed good and plugs looked good doesnt mean you are getting good spark. Did you do a spark test? I went through almost the same thing 2 weeks ago. thought it was fuel issues and tried everything to fix it. New plugs and the same result. Did a compression test, that was good. Spark test showed firing in only 1 of 6 cylinders. dont ask me how it could run but it did. I ended up changing the 6 cdm's and the stator. Now it runs better that it ever did. i have a 95 merc 225 2 stroke. Those are parts that wont get changed at rebuild time. if you motor is a 94 also, Merc had a ton of trouble with the cdm's going bad. If 1 goes bad it screws up others.

[bigern76]

I don't know if your motor has them or not but I had a small 2 stroke outboard do the same thing you described. It ended up being a bad coil pack. It cranked and ran great until it got hot then it just quit. After about 15 minutes, it would start and run till it got hot again.

[NH Tooner]

yes the cdm's are the coil packs