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mower needed carb cleaner to get started? #4438074
06/21/17 09:46 PM
06/21/17 09:46 PM
Joined: Nov 2009
Posts: 5,126
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,126
Houston, Texas
This was odd, but maybe not. My old exmark 21" (old faithful)got retired a while back and I've been pretty good at starting it once a month, well the last time I let it go maybe 1.5 months and it took a few pulls to get going, now this very last time I started it the mower probably hadn't been run in a couple months maybe. I went ahead and removed the air filter cover and squirted a couple squirts of carb cleaner in the intake and it fired right up.

Now this engine fj180v 6hp Kawasaki doesn't have a primer bulb, so did it just need a little prime to get things pumping again? I went ahead and let it run for about 15-20 minutes with a string holding the bar down and it restarted about 15 minutes later when I tried it.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438080
06/21/17 09:54 PM
06/21/17 09:54 PM
Joined: Jul 2015
Posts: 3,772
MD
AirgunSavant Offline
AirgunSavant  Offline
Joined: Jul 2015
Posts: 3,772
MD
Use Startron on every fill up!

Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438082
06/21/17 09:55 PM
06/21/17 09:55 PM
Joined: Aug 2011
Posts: 2,090
Lakeside, CA
Blkstanger Offline
Blkstanger  Offline
Joined: Aug 2011
Posts: 2,090
Lakeside, CA
Try treating it to fresh fuel. Modern gas doesn't fair well sitting.


99 Jeep WJ 4.7 192,000 Maxlife 10w30, Fram Ultra.
Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438089
06/21/17 10:07 PM
06/21/17 10:07 PM
Joined: Dec 2016
Posts: 7,191
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 7,191
Waco, TX
Do you have Ethanol-free gasoline available?

I'd dump a little Berryman's B-12 in the existing gas in the tank for now, and mow with it. That'll help de-gum the internal carb parts.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: mower needed carb cleaner to get started? [Re: Linctex] #4438097
06/21/17 10:09 PM
06/21/17 10:09 PM
Joined: Nov 2009
Posts: 5,126
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,126
Houston, Texas
Originally Posted By: Linctex
Do you have Ethanol-free gasoline available?

I'd dump a little Berryman's B-12 in the existing gas in the tank for now, and mow with it. That'll help de-gum the internal carb parts.


It ran fine once I got it started, so I don't think anything is clogged.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438115
06/21/17 10:49 PM
06/21/17 10:49 PM
Joined: Feb 2016
Posts: 514
USA
DrRoughneck Offline
DrRoughneck  Offline
Joined: Feb 2016
Posts: 514
USA
Originally Posted By: motor_oil_madman
Originally Posted By: Linctex
Do you have Ethanol-free gasoline available?

I'd dump a little Berryman's B-12 in the existing gas in the tank for now, and mow with it. That'll help de-gum the internal carb parts.


It ran fine once I got it started, so I don't think anything is clogged.


Maybe not clogged but gummed-up, it would do that.

Just went through something similar myself.

A path of least effort is to run a tank of new fuel with some Techron in it. It will clean the gumming from the carb bowl, fuel lines and carb jets.

Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438208
06/22/17 05:10 AM
06/22/17 05:10 AM
Joined: Sep 2016
Posts: 1,418
Minnesota
bioburner Offline
bioburner  Offline
Joined: Sep 2016
Posts: 1,418
Minnesota
I had a small generator that was not very cooperative in starting but run with a fresh tank of gas with some carb cleaner additive and all was well after a couple hours running.

Fresh gas, no booze, means a lot now these days. My fault for not starting and changing last winter but it was 1600 miles away.



97 Ford E350 D,99 F350 dually D
13 Scion Xb
12 Ford Transit Connect
06 Nissan Xterra
03 K1200 BMW
07 Kawasaki KLR650
13 Madass
Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438253
06/22/17 06:29 AM
06/22/17 06:29 AM
Joined: Mar 2010
Posts: 5,368
Iowa
The_Eric Offline
The_Eric  Offline
Joined: Mar 2010
Posts: 5,368
Iowa
Is the choke setting properly?


2005 Lincoln Aviator 4.6 DOHC
2000 Honda Accord 2.3
2001 Hyundai Elantra 2.0
1979 Ford F-150 351M
Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438288
06/22/17 07:12 AM
06/22/17 07:12 AM
Joined: Nov 2009
Posts: 5,126
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,126
Houston, Texas
Nope never has, but always started on the first pull regardless. I guess unless it sits.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438290
06/22/17 07:14 AM
06/22/17 07:14 AM
Joined: Nov 2009
Posts: 5,126
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,126
Houston, Texas
Stuck choke is a known issue with this particular engine, but it never caused a starting problem, so I never looked into it.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4438348
06/22/17 08:13 AM
06/22/17 08:13 AM
Joined: Sep 2004
Posts: 7,829
Marshfield , MA
andyd Offline
andyd  Offline
Joined: Sep 2004
Posts: 7,829
Marshfield , MA
My Toro 20611 GTS began to need a spray of carb cleaner to start. After 2 seasons of this, I decided to investigate. Very carefully, I freed up the cable. The cable was OK, the butterfly's shaft was frozen open. A little oil and some exercise and the GTS is working as advertised. The mower is 25 yrs old and it purrs.


'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: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4449207
07/04/17 08:40 AM
07/04/17 08:40 AM
Joined: Nov 2009
Posts: 5,126
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,126
Houston, Texas
It does have winter gas in it from like January now, assuming we have that down here in Houston. This is just so weird. When I've had a clogged carb it's either two things. The engine will start and die when sprayed with carb cleaner or it will surge up and down when running IE running lean. I've never had and engine fire up and start running normally after a spray of carb cleaner like this one.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4449208
07/04/17 08:42 AM
07/04/17 08:42 AM
Joined: Nov 2009
Posts: 5,126
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,126
Houston, Texas
I find it hard to believe that fresh fuel will fix the problem. The gas in my generator is who knows how old and it runs fine. The gas in the generator is probably a couple years old.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: mower needed carb cleaner to get started? [Re: motor_oil_madman] #4449354
07/04/17 11:08 AM
07/04/17 11:08 AM
Joined: Jun 2011
Posts: 1,130
Texas
wag123 Offline
wag123  Offline
Joined: Jun 2011
Posts: 1,130
Texas
Gas spoils, like food. Believe it or not and like it or not, this is a FACT! First it looses volatility (makes an engine hard to start) then it begins to varnish (two year old gas even SMELLS like varnish). Eventually the varnish WILL gum-up your carb. Just drain the old gas out of it and refill with FRESH gas (fresh from the gas station, not just fresh from the gas can). Run it for 30 minutes and it will be fine. You'll see.
BTW, diesel fuel also spoils.

Last edited by wag123; 07/04/17 11:20 AM.
Re: mower needed carb cleaner to get started? [Re: wag123] #4449498
07/04/17 02:06 PM
07/04/17 02:06 PM
Joined: Nov 2009
Posts: 5,126
Houston, Texas
motor_oil_madman Offline OP
motor_oil_madman  Offline OP
Joined: Nov 2009
Posts: 5,126
Houston, Texas
Originally Posted By: wag123
Gas spoils, like food. Believe it or not and like it or not, this is a FACT! First it looses volatility (makes an engine hard to start) then it begins to varnish (two year old gas even SMELLS like varnish). Eventually the varnish WILL gum-up your carb. Just drain the old gas out of it and refill with FRESH gas (fresh from the gas station, not just fresh from the gas can). Run it for 30 minutes and it will be fine. You'll see.
BTW, diesel fuel also spoils.


I'll give it a try.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

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