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Posted by BoyntonStu on October 17, 2007, 3:22 pm
It used to run with the choke completely off?
Is it OK to run it this way?
Is a repair necessary?
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Posted by willshak on October 17, 2007, 3:44 pm
on 10/17/2007 3:22 PM BoyntonStu said the following:
> It used to run with the choke completely off?
>
> Is it OK to run it this way?
>
> Is a repair necessary?
>
>
Hard to say. Dirty air cleaner, carburetor adjustment, fuel filter, or
something else.
Any small motor repair place can diagnose the problem, even a lawn mower
service.
--
Bill
In Hamptonburgh, NY
To email, remove the double zeroes after @
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Posted by Meat Plow on October 17, 2007, 10:01 pm
On Wed, 17 Oct 2007 12:22:54 -0700, BoyntonStu wrote:
> It used to run with the choke completely off?
>
> Is it OK to run it this way?
Nope
> Is a repair necessary?
Yep
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Posted by Steve Kraus on October 18, 2007, 1:24 am
>> Is it OK to run it this way?
> Nope
If it's running stably in that position you're not hurting anything. For
some reason the mixture with the choke off is too lean and leaving it
partly on corrects that. The engine is then getting what it needs.
>> Is a repair necessary?
>
> Yep
It *should* be repaired but it's not like it's hurting itself if it's
running smoothly.
Of the possible causes previously given it won't be a dirty air cleaner as
that would have the same effect as the choke, richening the mixture. Fuel
filter....maybe but I wouldn't bet money on it. Carb adjustment...well
that doesn't change by itself but readjusting it could fix things. (Back
off the main carb adjustment screw maybe a turn and see if it then runs
sans choke.)
I would guess the problem is caused by dirt in the carb's fuel passages.
Repair would require disassembly with some tiny parts to deal with and you
still might never find anything specific but a general cleaning and
reassembly might correct that. But that might not be something you want to
get into. For now I would just try readjusting.
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Posted by Robert Barr on October 18, 2007, 11:48 am
Carb adjustment...well
> that doesn't change by itself but readjusting it could fix things. (Back
> off the main carb adjustment screw maybe a turn and see if it then runs
> sans choke.)
>
If it's a halfway recent engine, it won't even have any mixture
adjustments. Some of these consumer grade engines won't run right,
brand new. However, the OP said it used to run OK, which means the carb
probably needs a thorough cleanout.
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