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New to gas tuning might need some help

Old 03-17-2014, 01:50 PM
  #26  
Hydro51
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Originally Posted by tmaxx454
Just checked the plug it's a little black
If it starts easy and has good throttle response, leave the low speed needle alone and turn the high speed needle in 1/16th of a turn until it looks about like my plug in the picture.
Old 03-17-2014, 05:12 PM
  #27  
tmaxx454
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Yeah I'm deffinantly running a little richer than that I'll get to play around with it a little more after the weather clears up, and I'll start to dial it in better
Old 03-17-2014, 05:20 PM
  #28  
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Keep us updated.
Old 03-24-2014, 04:59 PM
  #29  
tmaxx454
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Ok so my my results suck lol I get it running seems to run awesome but yet again I turn off the choke and it just shuts down, no sputter no stumble just click and off like an off switch I don't get it really confused now
Old 03-24-2014, 05:57 PM
  #30  
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Maybe I'm wrong about the direction that the choke is on or off ?
Old 03-24-2014, 06:01 PM
  #31  
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Originally Posted by tmaxx454
Ok so my my results suck lol I get it running seems to run awesome but yet again I turn off the choke and it just shuts down, no sputter no stumble just click and off like an off switch I don't get it really confused now
Have you tried adjusting the idle? Try using the choke only to prime the motor, a couple pulls till it pops or the carb is wet should do it. Then open the choke and hold the throttle wide open till it starts, if it dies when you left off the trigger, start it again and keep it running while you trim it up till it stays running.

Most use the trim on the radio for the idle and completely remove the idle screw from the carb. I like to put a little thread lock on the idle screw and turn it back in just enough to where it keeps the butterfly from contacting the carbs bore when you back trigger to shut it down. This will keep from putting pressure on the butterfly shaft and butterfly, you should put a little thread lock on the set screw for the butterfly also.

Last edited by Hydro51; 03-24-2014 at 06:05 PM.
Old 03-24-2014, 06:28 PM
  #32  
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Originally Posted by tmaxx454
Maybe I'm wrong about the direction that the choke is on or off ?
Open

Last edited by Hydro51; 03-24-2014 at 06:32 PM.
Old 03-25-2014, 12:46 PM
  #33  
Ron Olson
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Oops, brain fart.

Last edited by Ron Olson; 03-25-2014 at 12:48 PM.
Old 03-25-2014, 01:10 PM
  #34  
tmaxx454
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Well when it's running it runs great no issues snappy response idles great maybe I'm tripping and got the chokes direction messed up it's the only thing I can think of
Old 03-25-2014, 01:35 PM
  #35  
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simple - when its running stick ur finger in carb opening - u can FEEL if it's open (like picture) or closed ------ must be open to run unless something is really off

Good Luck
Old 03-25-2014, 05:47 PM
  #36  
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I'll give it a shot but I was thinking like its a weed wacker carb when in warms up turn the choke off but hey I'm learning at least trying to get it threw my thick skull lol
Old 03-25-2014, 06:07 PM
  #37  
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Originally Posted by tmaxx454
I'll give it a shot but I was thinking like its a weed wacker carb when in warms up turn the choke off but hey I'm learning at least trying to get it threw my thick skull lol
My carb doesn't even have a choke, along with a lot of other sport boaters and racers setups. Just put our finger in the carbs bore (choking it) and turn it over slowly till it pops or your finger is wet, then remove your finger (opening choke) holding it wide open and crank it till it starts. Usually takes 2 to 4 pulls for it to fire.

Last edited by Hydro51; 03-26-2014 at 06:06 AM.
Old 03-25-2014, 06:31 PM
  #38  
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Ok yup I feel like an ass lol ok just put my finger down the bore it has a flapper for the aka choke but it's a primer flap it eather is open or closed there isn't an adjustment lol wow look at me I seriously was loosing my mind for nothing, basically it's a air shut off so it can allow fuel only to flow I dunno *** to call it lol and yeah pretty cool little system they stuck on the carb but had me mind f..... Thank you all , I know I'm hard headed but dam
Old 03-25-2014, 06:41 PM
  #39  
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Originally Posted by tmaxx454
Ok yup I feel like an ass lol ok just put my finger down the bore it has a flapper for the aka choke but it's a primer flap it eather is open or closed there isn't an adjustment lol wow look at me I seriously was loosing my mind for nothing, basically it's a air shut off so it can allow fuel only to flow I dunno *** to call it lol and yeah pretty cool little system they stuck on the carb but had me mind f..... Thank you all , I know I'm hard headed but dam
I've got a brand new in the package, never seen fuel Walbro-1048 carb that doesn't have all that junk built into it. PM me if your interested.
Old 03-25-2014, 08:36 PM
  #40  
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I don't know where you're at but even up here in the frozen tundra I've never had a need for a choke on my boats.
Old 03-25-2014, 09:30 PM
  #41  
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Choke? Isn't that your middle finger ????????????
Old 03-26-2014, 02:56 PM
  #42  
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The choke shaft is just another obstruction to air flow. Which carb are you using ?
Old 03-26-2014, 04:54 PM
  #43  
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Originally Posted by hendocap
The choke shaft is just another obstruction to air flow. Which carb are you using ?
He said it's a 644.
Old 03-26-2014, 06:09 PM
  #44  
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Yeah it's the 644
Old 04-10-2014, 08:45 AM
  #45  
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Why do people run colman camp fuel (50-55) octane with 30:1 oil??? I understand for the smell. but it seems it would lower performance?. I take 89 octane fuel add 1 oz water shake well, and pour off the pure gas. then run 40:1 Stihl full synthic oil. Works great for me. I have 2 23cc Zenoah air cooled and 1 30cc water cooled. Any at all comments are welcome. Thanks Rob
Old 04-10-2014, 01:18 PM
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OK, the no gas odor is just one thing. No additives that we don't need. Very long shelf life. No ethanol to ruin the diapragms. No need to touch the needles.
I just learned about the adding water to gas to remove ethanol trick just 2 days ago but I'm lazy and don't want to have to do that.
Old 04-10-2014, 02:07 PM
  #47  
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I do the gas by the 5 gallon cans. I own a mower shop. The first tank of a repair is ethanol free.. I also put Sea foam in. But Why so much oil?? Even with a low octane fuel??
Old 04-10-2014, 06:07 PM
  #48  
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I mix my camp fuel, 8oz. of this:http://www.lucasoil.com/products/dis...%20Oil%20TC-W3, per 1 gallon of fuel. Some run 10oz. per 1 gallon of fuel. It's cause we're pretty much constantly high in the rpms (18,000+ on a full mod motor) as soon the boat hits the water, unless you have an "ut oh" moment.

Last edited by Hydro51; 04-10-2014 at 06:13 PM.
Old 04-13-2014, 03:56 PM
  #49  
tmaxx454
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Got it out on the lake today and it ran like a champ, it ran a little too wet but no big deal just some minor trim tab adjustment needed but I've got the plug a nice light brown and it screams, thank you all for the help I can't wait to get it in the water next weekend
Old 04-13-2014, 04:20 PM
  #50  
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Originally Posted by tmaxx454
Got it out on the lake today and it ran like a champ, it ran a little too wet but no big deal just some minor trim tab adjustment needed but I've got the plug a nice light brown and it screams, thank you all for the help I can't wait to get it in the water next weekend
That's good to hear, glad you got some time on it.

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