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 Post subject: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 1:41 pm 
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Location: Flint, Michigan
Ok the problem im having with my newly purchased hammerhead is when i first start it I have to keep pressing the gas pedal in order to keep it running, when i let off the pedal it stalls. My assumption was that the idle was set to low, well i increased the idle speed and that seemed to take care of it, that is until it became warmed up. Once it warmed up the idle was high. Is there an adjustment to the carburetor that can be done to correct this problematic situation?
Its almost as if somethings going on with the choke..
Thanks


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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .
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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 1:58 pm 
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Ok I made the decision to just replace the carburetor instead of trying to adjust the thing. Can anyone out there tell me which carburetor I need to replace the stock one?

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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 2:09 pm 
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Have you adjusted the valves yet?

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Joylaris 400 - under construction
Gone, but not forgotten: 2005 Carter Talon, 2007 Hammerhead 250SS
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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 2:11 pm 
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07 Kandi 250GKA-2Z
Uni, 32mm pumper, BBK, performance CDI and coil, Endrigo Level 2 head, Cam, Iridium plug, SuperTrapp exhaust

06 HH 250
Fully stock ... but hoping to change that


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 2:13 pm 
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you shouldn't need to replace it yet try the valves first if its still the carb we can help you with that but just throwing another one at it will probebly not solve it because it will still need to be adjust straight out of the box

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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 2:14 pm 
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I cant seem to find where to get to these valve adjustments, there just dont seem to be alot of room to work on the carb on these hammerheads...Where are these adjustments at?
Sockman wrote:
Have you adjusted the valves yet?

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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 2:22 pm 
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there are two levers on the drivers side top of the engine. one lever is intake and the other is exhaust. it takes a 5/16 socket or wrench to loosen the bolt holding the levers. do one at a time.
different guys do it different ways (warm or cold engine)
me, i warm up the engine and loosen one lever at a time. it will start ticking. slowly draw back the lever until the ticking is down to barely hearing it. if you go too far you will hear the engine start to bog down. you just want to go far enough to barely hear the tick.
the other side goes the same way.

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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 3:20 pm 
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Ok I just did the adjustment and it seemed to smooth out. Are these hammerheads with the hammerhead exhaust supposed to sound almost like a harley cause once I get on it, there seems to be just the slightest hint of a bcakfire through the exhaust?

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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 4:14 pm 
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The HH performance exhaust is loud.

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Ron

Joylaris 400 - under construction
Gone, but not forgotten: 2005 Carter Talon, 2007 Hammerhead 250SS
Proud member of Team FIB


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:22 pm 
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Alright, I just got done with the valve adjustment and something just dont seem right here, it is backfiring through the exhaust when you give it gas and there seems to be a mis. I know there is only 1 cylinder on it but how can it feel like it has a miss in it? When its idling at temperature the idle also seems to go up and down sometimes stalling...HELP......lol

_________________
:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Hammerhead 250 missfire?
PostPosted: Thu Feb 21, 2013 5:33 pm 
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Ok, I just got done checking the valves on my buggy and now the problem im having is it almost feels like the thing has a miss in it, backfiring through the exhaust and when its idling the idle seems to jump up and down and then at times its stalling. Could this be the cause of a bad choke?

_________________
:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:33 pm 
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What are you running for jets in the carb? What air filter are you running?

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Ron

Joylaris 400 - under construction
Gone, but not forgotten: 2005 Carter Talon, 2007 Hammerhead 250SS
Proud member of Team FIB


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:35 pm 
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I know it has a uni air filter. As far as the jets go, im really not quite sure on that one, this is how i bought it. The thing ran fine before I tried to adjust the valves, now its running like fecal matter, lol excuse the language....

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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:37 pm 
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Well, you have a performance air filter and now performance exhaust. The carburator needs to be jetted to match your upgrades. YOu are getting more air through there so you need to match that with the fuel.

Oh, it makes it very hard to follow your problems when you keep starting new threads for essentially the same problem.

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Ron

Joylaris 400 - under construction
Gone, but not forgotten: 2005 Carter Talon, 2007 Hammerhead 250SS
Proud member of Team FIB


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:38 pm 
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I know, im just getting frustrated...sorry..

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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:38 pm 
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You will probably need to increase the size of your main jet. There are all kinds of threads on here about jetting, so just do a search. WHen I was running your set up, I ran a 130 main jet and that seemed to run well for me.

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Ron

Joylaris 400 - under construction
Gone, but not forgotten: 2005 Carter Talon, 2007 Hammerhead 250SS
Proud member of Team FIB


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:38 pm 
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I didnt do any of these upgrades to it, this is how I purchased it...

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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:39 pm 
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Would the wrong size jet make it feel like its missfiring?

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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:40 pm 
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And how do you go about changing it, would I have to take the carb off, or can it be done with it still on the buggy?

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:) Gary
08' Hammerhead SS 250
HH aftermarket exhaust, UNI 2 stage filter, 38 pilot jet-main jet 130, 30mm Pumper carburetor, (Stock)DC CDI, aftermarket ones are junk... with Coil, red torque spring, 20 g sliders, Dr. Pulley race variator kit. .


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 Post subject: Re: Hammerhead 250 carburetor adjustment
PostPosted: Thu Feb 21, 2013 5:45 pm 
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You can probably get to the main jet with the carb on, but you might as well take it off.

I would also rule out an intake leak, just to be sure. Get it running and spray starter fluid around the intake. If the motor revs, you might be getting some air in there somewhere.

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Ron

Joylaris 400 - under construction
Gone, but not forgotten: 2005 Carter Talon, 2007 Hammerhead 250SS
Proud member of Team FIB


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