Help with carb problem i think! clueless in Georgia

Posts: 52 · Silver Member Joined: 01 Jan 2008 Posts: 52 Pictures: 0

Hello about 5 mos. my 150cc japenesse knock off of the SUNL i think. was running good but kids rolled it. had to do some welding so i parked it. now getting back on the road or dirt. and got problems. It will crank up first try. and it will idle FOREVER and never cut off. BUT . ! if i give it the slightest bit of gas it bogs and shuts off. sometimes if i pat or feather gas REAL easy it will rev a BIT but not much. ONCE while patting gas it "kicked in" and i was able too drive fast for about 50 to 100 yrds then bogged down to only a idle and could accel. no more. Is my problem is that it has sat without running for a couple of months or something else. Any suggestions would be appreciated alot.

Posts: 1201

long time no here from marshnme,hope no one was hurt in the roll over.sounds like you have got some junk in your jets
probably have to pull carb off take jets out and clean them good,plugged up.
also after setting that long probably wouldn't be a bad idea to clean tank and petcock.
are you running a fuel flter beside the little screen filter on petcock inside tank?
pud

Posts: 1678

Pull both your carb jets out and clean em.

Posts: 52 · Silver Member Joined: 01 Jan 2008 Posts: 52 Pictures: 0

thanks guys will let you know if it works. and nobody got hurt thankfully. Harness works. pet rooster is the thing on the bottom outside of tank that the lines connect to to carry fuel? never done anything with it at all. let me know what to do with it. take it off completely?

Posts: 1201

thats good marshnme no one was hurt thats the main thing.
your petcock might be ok but setting a while junk could have settled down in it just to let loose and get into to the jets again or block fuel supply off. just unscrew it off the tank course you know what will happen if there is gas in the tank so you might want to empty tank first.
then when you get it off you can pop off screen filter clean it and look inside for junk. if you got a air hose blow it out a little but don't hold air hose to close to it there is a rubber diaphram inside that opens and close to let the fuel out, might rip it or something same thing with putting some thing sharp down inside of it like wire.
the top outlet is for gas and the bottom outlet is for vacuum to open and close it.
also when you clean your jets watch and make sure the float pin don't fall out and loose it.
here are a couple of picture of the petcock
pud

Posts: 1201

the red arrow is pointing to the float pin might not fall out but always good to keep an eye on it,
thanks for the picture ric Smile

pud

Posts: 52 · Silver Member Joined: 01 Jan 2008 Posts: 52 Pictures: 0

awesome guys

Posts: 1678

I might also add, that I've NEVER had good luck cleaning these carbs with just carb cleaner. Spraying carb cleaner all over will distort the rubber bowl gasket and maybe other rubber parts. The best way is to remove each jet and make sure the center holes are NOT plugged in both the idle and main jet. You may need to run a fine wire thru the jets to open em up.

Posts: 4208

Thats what I do when I clean jets. or I disassemble the carb and let it soke in a galon of carb cleaner

Posts: 52 · Silver Member Joined: 01 Jan 2008 Posts: 52 Pictures: 0

YES!!!!!!!!!!!!!!! its running . thank all of you for the helps. carb bowl . jets were disgustingly bad!!!!cant see how it idled at all. Now. I only got one adjustment screw on side of carb. i had messed with it before trying to get it to run better. Now I need to know if there is a default setting , like to screw all the way in and back it out so many turns to start.. at full throttle when i take foot off gas quick i get a back fire. what needs adjusting? thanks yall