Planet Minis

35mastr · 11-01-2009, 05:41 PM

Motor was running great. Started it last night for the ride this morning to make sure everything was OK.

At just before half throttle it seems likes it starves for fuel. It just starts

Bapp,Bapp,Bapp and will not even out at all. Or take anymore throttle.

I have seen people mention raising and lowering the needle. But it ran fine before.

Its got a Two Brothers 88 kit, Kehin Pc 18 carb kit,Takegawa manual clutch,Stock CDI

Any suggestions. Also how do you go about raising or lowering the needle? Is this the issue??

Just about run out of steam on this issue and ready to take it to a shop in the morning.

All help will be appreciated.

xlxrman · 11-01-2009, 05:52 PM

Have you cleaned the carb?

conant19 · 11-01-2009, 06:46 PM

check your air fuel mixture screw they tend to move makings them break up and not run right

arlindsay1992 · 11-01-2009, 06:47 PM

Clogged main?

fiveho · 11-01-2009, 06:49 PM

Quote:

Originally Posted by arlindsay1992

Clogged main?

X2, sounds like you sucked something into the main. popped the bowl off and take the jet out and blow everything out good.

35mastr · 11-01-2009, 07:02 PM

Quote:

Originally Posted by conant19

check your air fuel mixture screw they tend to move makings them break up and not run right

I tried adjusting both screws when at half throttle and it did not make any difference.

35mastr · 11-01-2009, 07:05 PM

Quote:

Originally Posted by fiveho

X2, sounds like you sucked something into the main. popped the bowl off and take the jet out and blow everything out good.

Will the carb need to come off the intake? I am new to these little bikes. Rode big bikes all my life and they were 2 strokes and I never had any issues with them.

I have been an auto mechanic all these years so these little bikes seem to frustrate the hell out of me.

I will have lots of questions when I have these little issues so bear with me please.

Thanks for the advice so far. I will either drop the bowl or remove the carb in the morning.

fiveho · 11-01-2009, 07:06 PM

Quote:

Originally Posted by 35mastr

I tried adjusting both screws when at half throttle and it did not make any difference.

because those screws dont affect anything at half throttle. the air fuel screw is for idle to 1/4 or 3/8. the other screw is your idle speed. its in your main circuit...clean it out. also check your electrical connections,,,including the ground wire.

fiveho · 11-01-2009, 07:09 PM

Quote:

Originally Posted by 35mastr

Will the carb need to come off the intake?

thats the easiest way to do it. just pull the carb and get it on the bench. less chance of loosing parts that way, and you can see whats going on better

gfleck067 · 11-01-2009, 07:14 PM

or see if you are gettin a good spark at half throttle might be cutting out

fiveho · 11-01-2009, 07:17 PM

Quote:

Originally Posted by gfleck067

or see if you are gettin a good spark at half throttle might be cutting out

what is your method of checking spark at half throttle?

crf50187 · 11-01-2009, 07:22 PM

Quote:

Originally Posted by fiveho

what is your method of checking spark at half throttle?

haha I know how do you check spark at half throttle

fiveho · 11-01-2009, 07:23 PM

i know a way, just seeing what his method is.

35mastr · 11-01-2009, 07:55 PM

Well pulled the carb off. Cleaned it all out. Pulled both jets hosed them down in carb cleaner and blew them all out. Went through the carb with carb cleaner also.

Carb was actually clean inside when I took it apart.

Still the same issue when started. No change at all. Brap,Pa,Pa Brap,Pa,Pa Brap at half throttle.

Could this be the CDI box by any chance? Seems like I am hitting the rev limiter?????

35mastr · 11-01-2009, 08:08 PM

Any one else want to take a shot at this???

Terry you got any input??

xlxrman · 11-01-2009, 08:13 PM

You don't have the choke on, do you?

35mastr · 11-01-2009, 08:18 PM

Quote:

Originally Posted by xlxrman

You don't have the choke on, do you?

No choke on. Actually never use it. Stays wide open all the time. Bike is a one kicker most of the time.

mopitdevil · 11-01-2009, 08:39 PM

might try runnin a non-resitor plug, ngk c7hsa and not the cr7hsa. could also be clogged air filter, air leak or faulty cdi or connection.

arlindsay1992 · 11-01-2009, 08:41 PM

Did you check your ground connection?

Blackwoodz · 11-01-2009, 09:06 PM

raise the needle all the way see if that helps. what ignition does it have on it?

11-01-2009, 05:41 PM	#1 (permalink)
35mastr 2nd Gear Member Join Date: Sep 2009 Location: Newark,Ca. Posts: 566 My Mood:	Got an issue Motor was running great. Started it last night for the ride this morning to make sure everything was OK. At just before half throttle it seems likes it starves for fuel. It just starts Bapp,Bapp,Bapp and will not even out at all. Or take anymore throttle. I have seen people mention raising and lowering the needle. But it ran fine before. Its got a Two Brothers 88 kit, Kehin Pc 18 carb kit,Takegawa manual clutch,Stock CDI Any suggestions. Also how do you go about raising or lowering the needle? Is this the issue?? Just about run out of steam on this issue and ready to take it to a shop in the morning. All help will be appreciated.

11-01-2009, 05:52 PM	#2 (permalink)
xlxrman 1st Gear Member Join Date: Dec 2008 Location: Spokane, WA Posts: 230 My Mood:	Re: Got an issue Have you cleaned the carb?

11-01-2009, 06:46 PM	#3 (permalink)
conant19 1st Gear Member Join Date: Nov 2008 Location: Mtv Posts: 171 My Mood:	Re: Got an issue check your air fuel mixture screw they tend to move makings them break up and not run right

11-01-2009, 06:47 PM	#4 (permalink)
arlindsay1992 "High Speed Record Guy" Join Date: Mar 2006 Location: Northern Virginia Posts: 4,369	Re: Got an issue Clogged main?

11-01-2009, 07:14 PM	#10 (permalink)
gfleck067 2nd Gear Member Join Date: Mar 2009 Location: new lenox IL Posts: 308	Re: Got an issue or see if you are gettin a good spark at half throttle might be cutting out

11-01-2009, 07:23 PM	#13 (permalink)
fiveho 2nd Gear Member Join Date: Jan 2006 Location: indiana,pa Posts: 910	Re: Got an issue i know a way, just seeing what his method is.

11-01-2009, 07:55 PM	#14 (permalink)
35mastr 2nd Gear Member Join Date: Sep 2009 Location: Newark,Ca. Posts: 566 My Mood:	Re: Got an issue Well pulled the carb off. Cleaned it all out. Pulled both jets hosed them down in carb cleaner and blew them all out. Went through the carb with carb cleaner also. Carb was actually clean inside when I took it apart. Still the same issue when started. No change at all. Brap,Pa,Pa Brap,Pa,Pa Brap at half throttle. Could this be the CDI box by any chance? Seems like I am hitting the rev limiter?????

11-01-2009, 08:08 PM	#15 (permalink)
35mastr 2nd Gear Member Join Date: Sep 2009 Location: Newark,Ca. Posts: 566 My Mood:	Re: Got an issue Any one else want to take a shot at this??? Terry you got any input??

11-01-2009, 08:13 PM	#16 (permalink)
xlxrman 1st Gear Member Join Date: Dec 2008 Location: Spokane, WA Posts: 230 My Mood:	Re: Got an issue You don't have the choke on, do you?

11-01-2009, 08:39 PM	#18 (permalink)
mopitdevil PM Newbie Join Date: Aug 2009 Location: st louis mo Posts: 14 My Mood:	Re: Got an issue might try runnin a non-resitor plug, ngk c7hsa and not the cr7hsa. could also be clogged air filter, air leak or faulty cdi or connection.

11-01-2009, 08:41 PM	#19 (permalink)
arlindsay1992 "High Speed Record Guy" Join Date: Mar 2006 Location: Northern Virginia Posts: 4,369	Re: Got an issue Did you check your ground connection?

11-01-2009, 09:06 PM	#20 (permalink)
Blackwoodz 3rd Gear Member Join Date: Aug 2008 Location: SC Michigan Posts: 3,627	Re: Got an issue raise the needle all the way see if that helps. what ignition does it have on it?

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