HickInTheSticks
Cadet
- Joined
- Aug 18, 2015
- Messages
- 8
Hey guys, hoping someone can point me in the right direction here. I recently acquired a new boat... a 19' Jason Voyager 1900 with a 4.3 OMC inboard.
Ran like a dream when I first got it... put 3 full tanks of gas through it without so much as a hiccup in the motor.
Then the last time I took it out, the cover/door to access the motor completely flew off the boat on the highway as I was going to the lake. Screws ripped out of the rotted wood. Then when I got to the lake, I forgot to put the drain plug in and put quite a bit of water in the boat before I realized and turned on the bilge pump and pulled the boat out of the water (was still on trailer warming up)... drained the boat, plugged it and put it back in the water. Just mentioning anything that was "different" than my usual trip. Not sure if the wind or something could have possibly threw my carb off (doesn't seem likely, but.... maybe it pushed gunk from the filter into the carb... maybe water got in it... i dunno.)
Now, I could tell almost right away something was "off". It was very minimal, but it could kinda bog out at full throttle intermittently. As in, it'd run at 4000 (for example, not sure exactly what RPM) for 10-15 seconds then drop down to oh say, 3500 RPM before going back to where it should be. Boat ran around 55 mph on the water for 3 full tanks...was only running around 45-50 at first.
Symptoms worsened while on the water. Got to the point where I could only run about 30 mph at full throttle, and the intermittent bogging/loss of power became more pronounced. Running around 2800-3200 RPM at full throttle and bogging down to like 1200 RPM, and much more frequently not quite violently accelerating/decelerating but you definitely wanted to be seated. Crawled it to the ramp even though I was in full throttle... to anyone else it just looked/sounded like I was throttling up and down, just screwing around. B
Pretty much the gist of it right there. There's crud built up inside the carb, so I'm assuming that's my issue right there. Cleaned it best I could with carb cleaner without actually removing it (don't have the gaskets to replace, yet) and pulled my plugs and cleaned those with a wire brush before re-installing. It runs a *little* better... but it ran like that when I launched last time and symptoms got worse over time.
Haven't even done a tune up or anything on it yet, and since I just got it last week I'll end up replacing all the plugs, filters, and give it an oil change.
Is the prop supposed to *SLOWLY* spin in neutral? I can grab it and stop it and spin it backwards or whatever without any resistance, it just spins a little bit on its own whenever its it neutral. I mean at like 20 RPM or something. Just wondering if that could be something that's causing an issue... kinda like a grabby clutch plates can cause starting/idling issues in dirtbikes.
Been a good solid boat for me for 3 full tanks of gas like I said. The only issues are some wood rot in the deck.... can kind of be expected from a 28 year old boat, though. Very sudden issue, assuming its probably the carb. Would y'all agree?
This is only my second boat. My first boat is a little 14' V hull aluminum with a 6hp outboard. My fishin' boat. So I guess you could say this is my first "real" boat. Need to get it purring again before I drop $$ on toys/tubes for this thing.
Ran like a dream when I first got it... put 3 full tanks of gas through it without so much as a hiccup in the motor.
Then the last time I took it out, the cover/door to access the motor completely flew off the boat on the highway as I was going to the lake. Screws ripped out of the rotted wood. Then when I got to the lake, I forgot to put the drain plug in and put quite a bit of water in the boat before I realized and turned on the bilge pump and pulled the boat out of the water (was still on trailer warming up)... drained the boat, plugged it and put it back in the water. Just mentioning anything that was "different" than my usual trip. Not sure if the wind or something could have possibly threw my carb off (doesn't seem likely, but.... maybe it pushed gunk from the filter into the carb... maybe water got in it... i dunno.)
Now, I could tell almost right away something was "off". It was very minimal, but it could kinda bog out at full throttle intermittently. As in, it'd run at 4000 (for example, not sure exactly what RPM) for 10-15 seconds then drop down to oh say, 3500 RPM before going back to where it should be. Boat ran around 55 mph on the water for 3 full tanks...was only running around 45-50 at first.
Symptoms worsened while on the water. Got to the point where I could only run about 30 mph at full throttle, and the intermittent bogging/loss of power became more pronounced. Running around 2800-3200 RPM at full throttle and bogging down to like 1200 RPM, and much more frequently not quite violently accelerating/decelerating but you definitely wanted to be seated. Crawled it to the ramp even though I was in full throttle... to anyone else it just looked/sounded like I was throttling up and down, just screwing around. B
Pretty much the gist of it right there. There's crud built up inside the carb, so I'm assuming that's my issue right there. Cleaned it best I could with carb cleaner without actually removing it (don't have the gaskets to replace, yet) and pulled my plugs and cleaned those with a wire brush before re-installing. It runs a *little* better... but it ran like that when I launched last time and symptoms got worse over time.
Haven't even done a tune up or anything on it yet, and since I just got it last week I'll end up replacing all the plugs, filters, and give it an oil change.
Is the prop supposed to *SLOWLY* spin in neutral? I can grab it and stop it and spin it backwards or whatever without any resistance, it just spins a little bit on its own whenever its it neutral. I mean at like 20 RPM or something. Just wondering if that could be something that's causing an issue... kinda like a grabby clutch plates can cause starting/idling issues in dirtbikes.
Been a good solid boat for me for 3 full tanks of gas like I said. The only issues are some wood rot in the deck.... can kind of be expected from a 28 year old boat, though. Very sudden issue, assuming its probably the carb. Would y'all agree?
This is only my second boat. My first boat is a little 14' V hull aluminum with a 6hp outboard. My fishin' boat. So I guess you could say this is my first "real" boat. Need to get it purring again before I drop $$ on toys/tubes for this thing.
