1996 mariner 150hp 2.0 litre wont idle after warm

mbecke2

Petty Officer 3rd Class
Joined
May 24, 2009
Messages
94
Motor starts and idles perfect on cold start right after get boat on water. Idles at about 900 rpm and purrs. Take it out for ride and get the motor warm. Motor runs perfect. Go back to neutral and it idles at 600 and sneezes and kills everytime so its hard to operate the boat when getting back to the launch because it kills. Here is a list of things Ive done.

1) changed spark plugs- ngk BU8H
2) cleaned all jets with air and carb cleaner
3) de carbed motor
4) tried to raise the idle a tad

Problem did not get resolved. I was wondering if it could be a coil and after the engine gets warm the coil fails. But maybe its just the carbs or timing?
 

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: 1996 mariner 150hp 2.0 litre wont idle after warm

If you haven't done your carbs right, (kits, thorough disassembly and cleaning), do it. Yer starving for fuel at idle.
 
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