78 70hp evinrude idles way too fast

[optimizer]

Re: 78 70hp evinrude idles way too fast

My timing spec is 4BTDC at idle and 17BTDC@WOT.

 

[Rex]

Re: 78 70hp evinrude idles way too fast

I think the linkage between the carb and the<br />dis. is off.<br />Check on that and see if the RPM do not come<br />down.<br />At list look there.<br />I bet something not right there.

 

[Rex]

Re: 78 70hp evinrude idles way too fast

Set the idle as low as it well go and then<br />set the timing to the right RPM that should <br />get you close

 

[optimizer]

Re: 78 70hp evinrude idles way too fast

Rex, what linkage are you referring to? I do not know what the abbreviation "dis." is referring to.<br /><br />If I set the timing to reduce the rpm I have to retard it to 10ATDC, where the spec says it should be around 4BTDC. Are you saying I should ignore the engine spec and retard the timing by 14 degrees?

 

[clanton]

Re: 78 70hp evinrude idles way too fast

On top of each carb there is long screw that plugs hole to idle jet, does screw have sealing washer on it? The reason I ask is I did 2 carbs yesterday that uses the same kit, and kit was missing these sealing washers.

 

[optimizer]

Re: 78 70hp evinrude idles way too fast

Yes, the sealing washers were in the kit and I replaced them on the carb,

 

[Rex]

Re: 78 70hp evinrude idles way too fast

Linkage from carb to the distributor.<br />Ingore the timing setting at this time.<br />and just get it run right.<br />Then you can go back and start to fine<br />tune it.

 

[Rex]

Re: 78 70hp evinrude idles way too fast

DID THAT WORK????????????????????

 

[gcde]

Re: 78 70hp evinrude idles way too fast

Have you checked the flywheel key has not sheared causing timing to be too far advanced?