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So after adjusting the valves I don't have the bogging down problem anymore also changed the oil as I did have a semi synthetic in the engine don't know if that also had anything to do with it. Still needs a little bit of carb tuning I think and still backfires on deacceleration. Could premium...

haven't pulled the engine apart and it has been running fine, the engine is a 140cc the bike is a pitpro bigfoot.

i'll give that a try, how do I go about getting both lined up is it better to try adjust one over the other?

so i'll double check but I think the marks are a little bit off when one is lined up the other is not on the mark by a little bit maybe a 2cm. I'll recheck them but if this is the case how to I go about getting them both lined up is it easier or adjust one or the other?

Ok cool, there is also a mark on the gear that's on the left hand side of the bike in the engine near the top of the engine it has a chain running around it, forgive me not sure of the correct name. Should that mark also be lined up when its TDC along with the other mark with the letter T next...

Cool yeah it was only dribbling out just wanted to make sure that something wasn't wrong. Have to buy some more oil and fill her back up at least I know now that the valves are correct. There is a couple of lines on the gold coloured wheel behind the cover that is next to the gear lever. What do...

So I just finished adjusting the valve clearances using the guide on this website was pretty straight forward, just wanted to know was I supposed to drain the oil before I opened the cover for the exhaust valve cause when I open it oil proceeded to leak everywhere. Is this normal or not? Looks...

Its just the stock foam filter that came with the bike I don't think its anything special. Would the filter be affecting the engine?

ok so I moved the clip to the second highest spot on the needle and now when I open the throttle it the engine dies unless I release the throttle back to idle? Is this now because its running to lean? I took the spark plug out and the end was all black which is to rich correct? I thought it was...

Ok I have moved it up to the middle notch still seems to hesitate at after 1/2 throttle gonna try move it up another one tomorrow, ill let you know how I go. Thanks for the help

Its a mikuni 30mm probably a copy mikuni I assume that comes on a 140cc Pitpro bigfoot. I figured out how to get the needle out by compressing the spring and pulling the throttle cable out through the slot in the side of the slide, I found the c clip on the needle and it was on the lowest...

So I have the throttle cable of the carb of do I go about adjusting the needle that slides up and down im not sure how to get it out of the slide?

ok I will give that a shot thanks.

rev it quickly and it starts to hesitate at around half throttle I would say. Should I move the clip on the needle would that help at all? Are you talking about the needle that slides up when you move the throttle?

When you say mover the clip futher down the needle, I assume you a referring to a needle in the carby?

Its broken where the header goes through the mount that attaches to the engine. I haven't taken it off but that's what it looks and feels like, if I move the header with my hand one side will move up and down but the other side of the pipe wont. When I turn the throttle its fine till about...

the exhaust seems to be broken on one side when I do the bolts up that hold the exhaust to the engine one side of the exhaust can still be moved up and down a little bit like its broken a weld on one side. Haven't rejetted the engine yet still trying to tune it via the screw on the bottom of the...

Just wanted to find out if anyone would know a possible solution to a problem im having, if I roll off the the throttle not even that quickly sometimes the bike seems to backfire a lot. Also im getting quite a bit of oil and smoke coming out of the exhaust. I have adjusted the screw on the...

Cool thanks for the info, also wondering if the oko flatside carbs are any good compared to the mikuni ones? Do i need any adaptors to run one of those from what i have read they are easier to tune with the screws being more accesible.

Just still working out the bugs on this PitPro 140cc bigfoot that i aquired, its all good now i have replaced the brake fluid and now both brakes are working much better than the stock brake fluid they had in them. Only real problem i have is that when taking it for a bit of a ride to run it in...