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Is there a good fuel additive for lawnmowers? #4497293
08/24/17 07:16 PM
08/24/17 07:16 PM
Joined: Sep 2007
Posts: 59
Georgia
edweather Offline OP
edweather  Offline OP
Joined: Sep 2007
Posts: 59
Georgia
We inherited a small lawnmower with the house we bought. It's a 21" self propelled walk behind Troy Bilt, not very old, maybe 5 years. I have changed the air filter, oil, and checked the plug. Was running well, but has been a bit sluggish lately, and even konked out a couple of times, but it restarted. Is there anything else I should check? It just seems like a fuel system issue. Am running fresh 87 octane, but it has ethanol in it I'm sure. Will non ethanol gas help? Is there a fuel filter on it? Any suggestions are appreciated. Thanks, Ed


You'll be surprised what you'll never have to do if you put it off long enough
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497297
08/24/17 07:21 PM
08/24/17 07:21 PM
Joined: Apr 2013
Posts: 180
Kevil,Ky
vwmaniaman Offline
vwmaniaman  Offline
Joined: Apr 2013
Posts: 180
Kevil,Ky
Put a quarter cup of seafoam in there next fill up.


Don't waste your time on a slipshod repair.
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497304
08/24/17 07:24 PM
08/24/17 07:24 PM
Joined: Sep 2015
Posts: 3,939
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 3,939
Connecticut
I'd mix in a tiny amount of Techron fuel system cleaner on each fill up. Supposedly ethanol fuels are tough on some of the plastic parts in the fuel system. My dealer suggested running Startron additive. I ran out of that and just started using Techron and a few drops of MMO each fill up. Keeping the carb clean is they key to happy running. Non-ethanol fuel would be a help, but expensive. My local dealers wanted $30/gallon. Forget that.


----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497305
08/24/17 07:25 PM
08/24/17 07:25 PM
Joined: Dec 2014
Posts: 1,526
NY, USA, etc.
oilpsi2high Offline
oilpsi2high  Offline
Joined: Dec 2014
Posts: 1,526
NY, USA, etc.
Run a quarter tank of Techron with your next fill up.

Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497306
08/24/17 07:25 PM
08/24/17 07:25 PM
Joined: Jul 2008
Posts: 286
Bucks, PA
zfasts03 Offline
zfasts03  Offline
Joined: Jul 2008
Posts: 286
Bucks, PA
Star Tron


03 Corvette Z06
-Amsoil 5w-30 SS
07 Honda Accord 2.4L
-Amsoil 5w-20 SS
16 Suburban 5.3L
-M1 0w-20, XG10575
18 4Runner TRD Off Road
- Amsoil 0w-30 SS, TRD filter
Re: Is there a good fuel additive for lawnmowers? [Re: vwmaniaman] #4497325
08/24/17 07:49 PM
08/24/17 07:49 PM
Joined: Dec 2002
Posts: 42,293
New Jersey
JHZR2 Offline
JHZR2  Offline
Joined: Dec 2002
Posts: 42,293
New Jersey
Originally Posted By: vwmaniaman
Put a quarter cup of seafoam in there next fill up.


+1. A tank or two before I change the oil, I run a dose of B12 or Seafoam, which seems to keep things nice and clean.

Re: Is there a good fuel additive for lawnmowers? [Re: zfasts03] #4497326
08/24/17 07:49 PM
08/24/17 07:49 PM
Joined: Dec 2004
Posts: 1,549
Pennsylvania
Slick17601 Offline
Slick17601  Offline
Joined: Dec 2004
Posts: 1,549
Pennsylvania
Originally Posted By: zfasts03
Star Tron


+1


2018 Ram Bighorn 5.7
2008 Toyota Sienna 3.5
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497327
08/24/17 07:52 PM
08/24/17 07:52 PM
Joined: Apr 2004
Posts: 5,242
Texas
JustinH Offline
JustinH  Offline
Joined: Apr 2004
Posts: 5,242
Texas
I buy a cheap bottle of Supertech Fuel Injection/Carb cleaner in the automotive aisle at walmart.

Every time I put gas in my self propelled Deere, I put about a cap full of the stuff into the tank.

Since I started doing that the engine does not sputter at all, and starts on the second pull every time.

I think the supertech cleaner is $2.50 for the white bottle. At the rate I'm using it, it will last a year, and we mow nearly year round


'11 Hyundai Sonata GLS
'11 Scion XB
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497330
08/24/17 07:54 PM
08/24/17 07:54 PM
Joined: Jan 2016
Posts: 267
Ada county Idaho
MRtv Offline
MRtv  Offline
Joined: Jan 2016
Posts: 267
Ada county Idaho
Plugs are cheap. Replace it. Just my opinion.

I buy a 5 gallon can of non-ethanol fuel in the spring. Lucky me Boise has it available. Usually I buy 91 octane. I add 2 oz of MMO. I use it all season long. If I have any left over it goes into one of my vehicles. I think I will add a dash of some Techron to the next tank fill in my mower.


2014 Nissan Versa Note 1.6 liter engine. 1997 Ford F150 4x4 4.6 liter engine.
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497332
08/24/17 08:00 PM
08/24/17 08:00 PM
Joined: Mar 2004
Posts: 21,105
Upstate NY
Donald Offline
Donald  Offline
Joined: Mar 2004
Posts: 21,105
Upstate NY
I use E0 gas and blue StaBil. All year long for all OPE.

You should pull the carb and clean it, install a carb rebuild kit if possible.


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497333
08/24/17 08:01 PM
08/24/17 08:01 PM
Joined: Sep 2004
Posts: 7,810
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,810
Marshfield , MA
I run a cap full of MMO in every tank. That's so I don't have use a dose of Berryman's B 12 Chem Tool. B 12 will clean out a carb often enough so that I try it before I take the carb apart. Sea Foam is too expensive.


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497337
08/24/17 08:05 PM
08/24/17 08:05 PM
Joined: Jun 2017
Posts: 110
FL, USA
shurguywutt Offline
shurguywutt  Offline
Joined: Jun 2017
Posts: 110
FL, USA
Non-ethanol 90 octane rec fuel is the only thing I use in my small carb engines. Change the plug and run some fresh rec fuel through it, put the 87 octane you have left in your car where it gets used much faster.


2008 Pilot 2WD J35Z1 148k
Maxlife Blend 10w-30
FRAM Ultra Synthetic
Fumoto F106SX
Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497340
08/24/17 08:09 PM
08/24/17 08:09 PM
Joined: Sep 2010
Posts: 7,485
S California
OneEyeJack Offline
OneEyeJack  Offline
Joined: Sep 2010
Posts: 7,485
S California
Maybe a small fuel filter between the tank and the carb. And clean out the fuel tank and whatever additive you choose run some carb cleaner through the engine where the air filter goes. Change/clean the air filter often. Sharpen and balance the blade, too.

Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497341
08/24/17 08:10 PM
08/24/17 08:10 PM
Joined: Jan 2009
Posts: 13,975
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,975
Illinois
I use MMO in mine. Seems to work well.


2007 Ford Fusion 235,000 miles
M1 0-20 EP
2017 Ford Fusion 60K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: Is there a good fuel additive for lawnmowers? [Re: edweather] #4497350
08/24/17 08:25 PM
08/24/17 08:25 PM
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
Panzerman Offline
Panzerman  Offline
Joined: Dec 2006
Posts: 4,220
Port Orange, Florida
It's usually the carb jet. The one in the bottom of the bowl.
Only once have I ever seen a spark plug cause problems. Most 4 stroke lawns begin and die with the same plug. The carb needs a good cleaning. The wire used in bread ties with the paper stripped off works well.
After you clean it good, treat the gas with Sea Foam or Star Tron and you will probably never have issues again.

Last edited by Panzerman; 08/24/17 08:26 PM.


2006 Dodge Ram 2500 Hemi 4x4
2016 Dodge Challenger Scat Pack
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