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Graham carb / jet

Discussion Forum at MarineEngine.com » Mercury Mariner Outboard » Archive through July 20, 2009 » Graham carb / jet « Previous Next »

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rick jacobs
Member
Username: rickster

Post Number: 17
Registered: 06-2007
Posted on Saturday, July 18, 2009 - 08:54 pm:   Edit Post Delete Post View Post/Check IP

Graham, I pulled out air idle jet it's a .096 not .040 is this why stalls @ ilde??
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Graham Lamb
Senior Member
Username: galamb

Post Number: 5708
Registered: 05-2007


Posted on Saturday, July 18, 2009 - 09:49 pm:   Edit Post Delete Post View Post/Check IP

That could be the problem. You would be running extremely lean, which is definately not the desired way to idle.

In a more simple carb design where all the functions fall to the low speed (or idle) jet, if anything, you set it to run slightly rich.

If you have an .096 in place of a .040 jet you would be mixing over twice as much air with the fuel than what it was designed for, taking the balance totally out of whack...
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rick jacobs
Member
Username: rickster

Post Number: 18
Registered: 06-2007
Posted on Saturday, July 18, 2009 - 10:33 pm:   Edit Post Delete Post View Post/Check IP

Thanks, Graham I will change all jets to spec. let u know next week what happen.

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