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 Catalina/Capri 25/250 Sailor's Forums
 General Sailing Forum
 1983 Mariner 9.9		  New Topic  Topic Locked
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ed_spengeman
1st Mate

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USA
98 Posts
Initially Posted - 07/14/2007 :  15:26:49  Show Profile
First problem was missing out every 5 seconds or so when it was under load but not going fast. Used carb cleaner and tried it out. Worked fine at high speed when I lowered speed it died out. It started fine(electric) but it would only idle in the start position. If I tried to move the throttle, it died. If I tried to move the throttle on the carb it change tone but wanted to die.

Has good gas and it is getting as far as the filter. Filter was clean. Took it to the shop. He re-built the carb, checked timing, spark, compression, coil, etc. All was fine. He had the same problem and when it happened, he checked plugs and they were wet.

Any ideas? I'm at a loss and so is he. I'm going nuts without the boat. Any tips would be greatly appreciated.
ed spengeman
Indianapolis (geist)
Port Captain
Palakida
83 tr/sk
Edited by - on

ClamBeach
Master Marine Consultant

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3072 Posts
Response Posted - 07/14/2007 :  16:02:09  Show Profile
Try here: http://forums.iboats.com/
They have a section on Mariner/Mercury outboards.

(Edited: Aw heck, I see you've already posted your question there)

I've run lots of 2 stroke engines but I'm not familiar enough with Mariner outboards to answer with other than generic advice.

1) On a 2 stroke engine, if in doubt, change plugs as a starting point.
2) Runs on top end, runs at idle, but craps out in between. Usually fuel issue. Carburation... mid range jet, float level, needle position (if so equipped), enrichment jet if so equipped.... You're using nice fresh fuel, yes?
Edited by - ClamBeach on 07/14/2007 16:03:30
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ed_spengeman
1st Mate

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USA
98 Posts
Response Posted - 07/14/2007 :  19:06:06  Show Profile
It's running at idle when it is in the full throttle position.
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.