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Lawn mower main jet plugging up... #4541461
10/12/17 06:55 PM
10/12/17 06:55 PM
Joined: Mar 2008
Posts: 5,943
Michigan
ZZman Offline OP
ZZman  Offline OP
Joined: Mar 2008
Posts: 5,943
Michigan
Finally got fed up taking lawn mower main jet out and cleaning it so mower would run. Bought a filter at O'Reilly Auto Parts today and installed it. Hope no more issues!
Do you guys usually run fuel filters on small engines?

Last edited by ZZman; 10/12/17 06:55 PM.

2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40
Re: Lawn mower main jet plugging up... [Re: ZZman] #4541467
10/12/17 06:59 PM
10/12/17 06:59 PM
Joined: Sep 2010
Posts: 6,990
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,990
Texas
No, but about to start my B&S (7) was just rescued by CRC throttle body cleaner approved

Re: Lawn mower main jet plugging up... [Re: 4WD] #4541475
10/12/17 07:09 PM
10/12/17 07:09 PM
Joined: Mar 2008
Posts: 5,943
Michigan
ZZman Offline OP
ZZman  Offline OP
Joined: Mar 2008
Posts: 5,943
Michigan
Originally Posted By: 4WD
No, but about to start my B&S (7) was just rescued by CRC throttle body cleaner approved


Usually some carb cleaner worked. This last time I needed to use a small pin pushed into the jet hole to clear whatever was in it.


2003 Mercury Grand Marquis. Rotella T6 Multi-Vehicle oil
2008 Sebring Hardtop convertible. Rotella T6 Multi-Vehicle oil
2006 Kawasaki Vulcan 900 LT. Amsoil Metric 10w-40
Re: Lawn mower main jet plugging up... [Re: ZZman] #4541489
10/12/17 07:16 PM
10/12/17 07:16 PM
Joined: Sep 2010
Posts: 6,990
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,990
Texas
Was out of carb cleaner when I grabbed the CRC found it a better blast than the cheap cleaners I normally buy
started second pull

Re: Lawn mower main jet plugging up... [Re: ZZman] #4541494
10/12/17 07:19 PM
10/12/17 07:19 PM
Joined: Jun 2003
Posts: 17,347
Deplorable in apple valley, ca
Chris142 Online content
Chris142  Online Content
Joined: Jun 2003
Posts: 17,347
Deplorable in apple valley, ca
I always add a filter. The one in the tank may not work well enough.


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: Lawn mower main jet plugging up... [Re: ZZman] #4541535
10/12/17 08:03 PM
10/12/17 08:03 PM
Joined: Aug 2011
Posts: 2,022
Lakeside, CA
Blkstanger Offline
Blkstanger  Offline
Joined: Aug 2011
Posts: 2,022
Lakeside, CA
Mine would always do that. I started treating the fuel and all my problems went away.


99 Jeep WJ 4.7 190,000 Maxlife 10w30, Fram Ultra.
Re: Lawn mower main jet plugging up... [Re: Blkstanger] #4541566
10/12/17 08:32 PM
10/12/17 08:32 PM
Joined: Sep 2010
Posts: 6,990
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,990
Texas
Putting so much additive in gas cans that additives might need filtering

Re: Lawn mower main jet plugging up... [Re: ZZman] #4541710
10/12/17 10:42 PM
10/12/17 10:42 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Let me know how you add a filter to a tank mounted carburetor. I'm all ears. grin2

Re: Lawn mower main jet plugging up... [Re: ZZman] #4541712
10/12/17 10:46 PM
10/12/17 10:46 PM
Joined: Jun 2002
Posts: 12,518
The Motor City
Kestas Offline
Kestas  Offline
Joined: Jun 2002
Posts: 12,518
The Motor City
With any carburetor problems I take the whole fuel system apart and clean it, including the fuel tank. Then I try to not introduce any more contaminants. Some of my OPEs have a fine mesh filter at the fuel tank.

Re: Lawn mower main jet plugging up... [Re: Chris142] #4541879
10/13/17 07:15 AM
10/13/17 07:15 AM
Joined: Jan 2003
Posts: 3,074
Coastal South Carolina
edwardh1 Offline
edwardh1  Offline
Joined: Jan 2003
Posts: 3,074
Coastal South Carolina
yes, briggs has two colors, red filter is for engines without a fuel pump I think


These products are all new every year?? They are a revolution!!! Razor blades, mens shirts, TVs, wiper blades, gutter guards, hearing aids... according to the ads. But also all new last year
Re: Lawn mower main jet plugging up... [Re: ZZman] #4541935
10/13/17 08:12 AM
10/13/17 08:12 AM
Joined: Nov 2013
Posts: 1,916
Chicago, IL
EdwardC Offline
EdwardC  Offline
Joined: Nov 2013
Posts: 1,916
Chicago, IL
I like to add a clear filter whenever possible. Usually for older machines, I swap out the lines for transparent Tygon stuff, it's also convenient to be able to see fuel flowing. I put them on all my bikes too!

Re: Lawn mower main jet plugging up... [Re: ZZman] #4541948
10/13/17 08:20 AM
10/13/17 08:20 AM
Joined: Apr 2012
Posts: 3,159
Boston, MA
Bgallagher Offline
Bgallagher  Offline
Joined: Apr 2012
Posts: 3,159
Boston, MA
Throttle body cleaner and a good winterize would solve that issue.


2017 Chevy Traverse - 28k - Delco Dexos 1 and PF63
2014 Chevy Equinox - 22k - Delco Dexos 1 and PF457G
2015 GMC Terrain - 22k- Delco Dexos 1 and PF457G
Re: Lawn mower main jet plugging up... [Re: ZZman] #4541966
10/13/17 08:36 AM
10/13/17 08:36 AM
Joined: Apr 2010
Posts: 4,398
Storrs, Connecticut
jeepman3071 Offline
jeepman3071  Offline
Joined: Apr 2010
Posts: 4,398
Storrs, Connecticut
I run filters on all of them, mainly because I'm surprised at the amount of junk that seems to come out of gas pumps and into the cans.

With that said, 90% of the carburetors I have to clean for customer small engines are gummed up due to varnish and bad fuel. Something that can't be solved with a fuel filter.


2000 Jeep Cherokee 4.0L (180k) - Pennzoil 10w30, Napa Gold 1516, Magnefine trans filter
2009 BMW 328i (33k) - Castrol Edge Euro 0w40, MANN HU816X
Re: Lawn mower main jet plugging up... [Re: jeepman3071] #4541972
10/13/17 08:51 AM
10/13/17 08:51 AM
Joined: Oct 2008
Posts: 19,084
Sunny Florida
SteveSRT8 Offline
SteveSRT8  Offline
Joined: Oct 2008
Posts: 19,084
Sunny Florida
Originally Posted By: jeepman3071
I run filters on all of them, mainly because I'm surprised at the amount of junk that seems to come out of gas pumps and into the cans.

With that said, 90% of the carburetors I have to clean for customer small engines are gummed up due to varnish and bad fuel. Something that can't be solved with a fuel filter.


Yessir. Just had to pull the carb on my 10 year old trash pump. Always fed E10 with stabil in it. Not real sludgy, but the freaking microscopic main jet was plugged.


"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix
Re: Lawn mower main jet plugging up... [Re: EdwardC] #4542025
10/13/17 10:05 AM
10/13/17 10:05 AM
Joined: Sep 2010
Posts: 6,990
Texas
4WD Offline
4WD  Offline
Joined: Sep 2010
Posts: 6,990
Texas
I ordered an assortment of that hose and will give it a try sad how many times I have trouble with an engine over poor quality fuel hoses

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