94 Speedster Portside engine dies after a few minutes + noise from flush fitting

[karfreak09]

Hello,

I just came back from the lake, and the boat started just fine, ran flawlessly for 5-10 minutes, then the starboard engine stumbles a little then dies. The first time i managed to restart it, and it ran until i got up on plane then died again. So i gave it a little bit of time, started them both back up and then increased the throttles slowly to see what rpm, it would start dieing out at. The magic number seemed to be around 4000 rpm. Also, i noticed that after the restart, i couldn't really pass 4500 rpm at all with that engine. I tried to start it a few more times after this, and it seemed to have a really hard time turning over, almost like it was locked up. After that, i gave up running that engine and drove slowly around the lake with one engine. I parked, then checked the engines... (good news is they were still both there.... :thumbsup but unfortunately i didn't have tools with me.. so i couldn't do much... i did notice however that turning the PTO by hand was nearly impossible, where as the other engine i could at least get it moving a bit.
another thing i noticed was that the flush fitting for that engine was making a strange gurgling sound immediately after stalling, which i hadn't heard before.
The compression was checked the day before for a different issue, and is between 143-148 on each piston.

Please help, i could really use it.

 

[El Toro 33809]

Sounds like you may have gotten water in the motor. Pull the plugs, ground the wires and then hit the starter.

 

[karfreak09]

Ok, brought the boat home, and tried that, the motor seemed seized as hell, so it did not want to budge.. so i focred the pto over with a tool. and noticed a crazy screeching sound from the pump, so i took off the pump, and found that there was not oil, only water in the bearing and nose cone area... along with a salads worth of metal particles and such from disintegrated bearings, which i am working on now, without the pump, the engine seems to turn over problem free. Thanks for the help Sir!

 

[Dr Honda]

That's what happens when you don't inspect the pumps on a yearly biases.

Rebuild the pump... and you will be good to go. BUT... since you have a full lock-up.... you will need a pump shaft too. (along with a rebuild kit)

 

[karfreak09]

Well, Dr Honda, i had acctually just purchased the boat about 3 weeks ago, so i was unsure of their condition... but because of other things i've fixed that the previous owner clearly screwed up by doing all the work improperly, i had already planned to rebuild the pumps, so conveniently, i already purchased two rebuilt kits, with seal carriers, wear rings, and shafts. I'm telling you everything this guy touched was put on wrong... I think he may have changed the oil in the pumps at one point, and he took off the nose cone, when he put it back, he pinched the seal and bend a couple of the mounting studs... hence... the oil was not in the pump, because it all leaked out...

 

[karfreak09]

So it turns out i've jumped the gun, the pump is now working just fine and not making any noises, but the engine still dies out a few seconds after reaching plane. I can keep it at 4000k almost all day long, but right after I pass that to get on plane, it dies right out on me.
Carb rebuild time? or just a good cleaning/adjustment?

 

[Dr Honda]

Yep... time for a rebuild.

If you are careful, you don't normally need a rebuild kit. Just disassemble, clean, and reassemble. But... verify the pop-off, and make sure the needle and seat can hold 10psi without leaking.

 

[karfreak09]

Thanks doc,

do you or anyone else know what the OEM Carb settings should be in case the settings are off by a lot? i'm also thinking something is off with the high speed needle/circuit (maybe just dirty, but ill find out this afternoon)

 

[karfreak09]

ok, took the carb off, and the thing looks very clean, i think it may have been replaced because it almost seems like the paint on the outside of the carb is in too good of condition for a 1994. i took out the internal filters and cleaned them, although there wasn't really that much stuff. Now i'm just try to figure out how to adjust it properly. I've read a few generic carb threads, and they are great, but a little too generic it seems. i need to know what settings to start out at.

 

[Dr Honda]

Unfortunately... no... I dont' know the settings for a 94. (Don't have a book that early) look at the engine tag, and tell me the "Type" of engine. It should be either a 657 or 657x.

Also... since you had the carbs apart... tell me the jet and needle size.