1997 20hp (2) issues

[BruceF]

When the engine gets to operation temp she will not stay idling in neutral. Runs great otherwise. Also i need to replace the t-stat and the bolts won't budge. Any suggestions??

Thanks in advance.

 

[achris]

Re: 1997 20hp (2) issues

Hello Bruce and :welcome: to iBoats.

Won't stay idling in neutral sounds like it might be a carb issue.

To remove stuck bolts can be tricky. First I would give them a sharp hit with a drift and hammer. If that doesn't shift them, I would drill the heads off and work from there...

Chris......

 

[MH Hawker]

Re: 1997 20hp (2) issues

You may need to set the idle up a bit.

 

[brim_buster]

Re: 1997 20hp (2) issues

you could spray them with PB blaster and let the sit and soak up the penetrating oil

 

[quicktach]

Re: 1997 20hp (2) issues

Kroil is good for stuck bolts. Soak well and let sit overnite. Using a good fitting wrench, tap gently counterclockwise. If they don't loosen, tap gently clockwise -- and then try counterclockwise again. Sometimes a bit of heat from a micro torch on the bolt head will loosen up any compounds on the threads. Make sure no gasoline around with the torch going.

 

[Boatsnskis]

Re: 1997 20hp (2) issues

Hi, mercury 2 strokes are extremely simple to diagnose and repair in your case the first step would be....

With PLASTIC PLIERS ONLY remove ignition leads one at a time at mid throttle and listen for changes if you pull one off and you DO NOT notice a noise change then your running on one cylinder....

If it passes your first step then your only other option would be idle circuit in your carburettor

GOOD LUCK

 

[Boatsnskis]

Re: 1997 20hp (2) issues

And for the seized bolts you need to get some heat thru them... Oxy