1985 Mercury 35Hp Won't Idle

ppare05

Cadet
Joined
Sep 19, 2009
Messages
8
Back story. Engine caught on fire back in 2010. It has been sitting since because of time and money. I finally started working on it and rebuilt the carb, replaced some fuel lines, and repaired any burnt wires. I just finally cranked her over this past week and she ran great. She would idle fine and also went into gear and sounded good. I went to start it again this past weekend and it was running good and then at idle it would bog down then shut off. If I gave it a little throttle it would keep her running and the shuttering and hesitation would stop. As soon as I let off the throttle it would shutter and bog down and shut off. Any ideas what I need to look for?
Thank you,
Phil
 

ppare05

Cadet
Joined
Sep 19, 2009
Messages
8
Re: 1985 Mercury 35Hp Won't Idle

So I check both plugs and I am getting spark but still not idling correctly. Does anyone know what else I should check??
 

bobkyle2

Petty Officer 2nd Class
Joined
Sep 2, 2010
Messages
159
Re: 1985 Mercury 35Hp Won't Idle

Sounds like pilot jet in carb is clogged... Be sure your lines are good and tank is clean.Might have to pull those carbs back down.
 

ppare05

Cadet
Joined
Sep 19, 2009
Messages
8
Re: 1985 Mercury 35Hp Won't Idle

Sounds like pilot jet in carb is clogged... Be sure your lines are good and tank is clean.Might have to pull those carbs back down.

Bob,
Thank you! That is what it was. Pulled and cleaned out the carb. Got out tonight for a test run up and down my local river. Over all she ran good. Not sure if the idle is to low. She idles fine but as I start to give her a little throttle she sounds like she is going to bog down but then clears up. She never stalled though! Here is a little clip of her running WOT. There is a high pitch noise in the first couple seconds of the video. That was just one of my children excited and screamed while we were running up the river.
 
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