High idle at start on 135 mariner 1996

[schafdog]

Just bought a 1996 135 horse mercury mariner . runs but starts rough and once started the thing goes full blast to the point of spinning bearings or blowing up all together. Is this a throttle adjustment or something else and if it is throttle adjustment can somebody PLEASE! Help me find where it is and how to do it. I dont want to blow this thing up[. Thank You

 

[andy6374]

Re: High idle at start on 135 mariner 1996

Sounds like your throttle linkage is way out of wack, it needs adjustment. Put the throttle in neutral (idle). Then look under the cowl to verify the idle stop screw is sitting against the block.

 

[schafdog]

Re: High idle at start on 135 mariner 1996

turns out number 3 cylinder is bad 0 compression.

 

[andy6374]

Re: High idle at start on 135 mariner 1996

Guess I was way off.<br /><br />Sorry to hear about the motor. What's your course of action?

 

[waterinthefuel]

Re: High idle at start on 135 mariner 1996

This is a post to show the importance of pre-buy inspection.

 

[schafdog]

Re: High idle at start on 135 mariner 1996

guy i bought it from is going to rebuild it or give me another one that is in working order. His partner in business owns his own shop so hopefully they will get this resolved. No kidding with the pre buy inspection i certainly got burned. thanks gentlemen