Low idle on a inline 6.

[TRBERK]

I have a 1973 115hp inline 6 with 3 carps. I would like to know the proper way to increase the idle. It runs great, starts great, and runs at full throttle great. But, when running at low RPM in gear it will quit. or when you drop it into gear, it will quit running. So you have to be quick on the throttle to keep it running.

Serial number for my motor is 3505081. 1973 inline 6, 3 carbs.

Any help would be really great. Thanks!

 

[TRBERK]

Re: Low idle on a inline 6.

Anyone!

 

[daveswaves]

Re: Low idle on a inline 6.

Anyone!

There is an idle adjustment screw on the front of the vertical support that holds the distributor mechanism. It is clearly marked as "idle speed". Your idle should be set with your engine in gear, in the water and typically will be 500 to 600 RPM depending on your prop. In neutral it should be no more than 1000, 800 is preferable.

 

[TRBERK]

Re: Low idle on a inline 6.

Any chance of a picture of this as I have looked everwhere for a screw setting on the distributor. But I haven't found one.

 

[daveswaves]

Re: Low idle on a inline 6.

http://i8.ebayimg.com/08/i/000/cf/2f/df1c_2.JPG
If you follow this link you will see a distributor lying on its side, the screw in question is one of the 3 that you can see sticking up from the distributor.

 

[TRBERK]

Re: Low idle on a inline 6.

Ok, Thank You very much for all your help!

 

[Fuzzytbay]

Re: Low idle on a inline 6.

Here is a link to a post on how to make the proper adjustments for idle speed, timing etc. It might help you understand how the carbs, distributor, etc all interrelate, on the inline 6's. http://forums.iboats.com/showthread.php?t=168855

 

[Chris1956]

Re: Low idle on a inline 6.

TR, As you turn the idle stop screw in the motor should speed up. Eventually you will not be able to turn it as the throttle cable will stop you. You may need to adjust the throttle cable barrel nut.