WaterKrafter
Cadet
- Joined
- Jun 12, 2017
- Messages
- 19
Ahoy, ok, so I finally launched the '83 Marlin 20 with Mercruiser 470 after rebuilding the carb and getting the fuel pump to work after bad fuel, etc. Anyway, she idles, accelerates, gets on plain then after about 40 seconds of what seemed to me as success finally...smoke everywhere! I shut her off and drifted to my slip.
Ok, it was rubber melting apparently from a stuck impeller and water guide tube. I also noticed the exhaust bellows was cracked on the underside.
what I don't know is if the exhaust or cooling system was plugged up from silt/sand that may have entered the system upon my reversing off my trailer in really shallow wated for about 20 feet. I didn't recoqnise it as too shallow but my prop was pretty much submerged about half way into it although I had trimmed up part way.
Meanwhile the impeller was new now it the worst case of a water pump gone bad I have ever seen.
I can't tell what or where the meltdown started or why...
Thanks for reading. If anyone can help me fiqure this out I would be extremely grateful as I hope I didn't break the boat now that she is finally running. I can start her up. She idles 650 rpm but when I pur her in gear...she just stops immediately.
Ok, it was rubber melting apparently from a stuck impeller and water guide tube. I also noticed the exhaust bellows was cracked on the underside.
what I don't know is if the exhaust or cooling system was plugged up from silt/sand that may have entered the system upon my reversing off my trailer in really shallow wated for about 20 feet. I didn't recoqnise it as too shallow but my prop was pretty much submerged about half way into it although I had trimmed up part way.
Meanwhile the impeller was new now it the worst case of a water pump gone bad I have ever seen.
I can't tell what or where the meltdown started or why...
Thanks for reading. If anyone can help me fiqure this out I would be extremely grateful as I hope I didn't break the boat now that she is finally running. I can start her up. She idles 650 rpm but when I pur her in gear...she just stops immediately.