fuel screen in carb all junked up

mischief2145

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Sep 21, 2009
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29
hello all i have a 1992 ish merc 3.0 lx with a mercarb and was not idleing .. first changed fuel water sep, nothing . then pulled off carb and checked fuel inlet on the carb and found it was three quarters full of what looks like sand??? or a paper filter went bad somewhere....... any ideas????
 

Bondo

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Apr 17, 2002
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Re: fuel screen in carb all junked up

Ayuh,... The spin-on filter isn't stock,...
I'm guessin' that sand's been there since the original spin-on install...
 

backyard mechanic

Petty Officer 1st Class
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Jan 6, 2009
Messages
203
Re: fuel screen in carb all junked up

You say nothing in the fuel water separator. Dumping out the contents and finding "nothing" doesn't mean nothing was there. My bet is the F/W filter was dirty and needed replacement. What you see in the carbs is dirty fuel from corrosion etc. Either way... you need to be replacing that F/W filter every year ESPECIALLY with ethanol fuel use. If you have a fiberglass fuel tank that is another reason for installing a new one every year.

Hope your engine troubles are all this simple! :)
 

mischief2145

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Sep 21, 2009
Messages
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Re: fuel screen in carb all junked up

yes i did replace the f-w sep filter and spin on filter??? i was talking fuel filterscreen on carb where fuel enters the carb. but ty for ur input maby i didnt understand you correctly
 
Joined
Sep 20, 2010
Messages
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Re: fuel screen in carb all junked up

it also would help to drain your fuel tank out and clean it to be sure mine was bad and i have the same engine but mine just has a fuel pump but in doing all that make sure you make throttle adjustments when taking the cable off the carb it will change the way it idles sometimes
 

mischief2145

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Joined
Sep 21, 2009
Messages
29
Re: fuel screen in carb all junked up

draining the tank would be good idea but i have a full tank of gas.....i have to get it running right to go burn up tha gas at the lake....
 
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