softwarez Posted January 19, 2009 Posted January 19, 2009 I feel cheeky posting this up, as I haven't posted in a long time. I have been amazingly busy with university exams, and a ton of other things. Now, to the subject at hand.I was riding my 125 Planet today (Only 1 month till the big bike ) but... The power started to dip strangely... and it would only o 20mph on full throttle, and feel 'unsecure'. I pulled over, had a look to make sure the cables were not stretched or anything odd. I saw nothing, so fired her up again. I continued my journey as I had an exam today! (20mph all the way) until suddenly the bike just decided to constantly rev and not stop lol! Even when I pulled the clutch in, it didnt seem to help too much (now that was scary lol) I managed to turn the bike off via key, and pull to the side (coasting). Now.. I have no idea what could be wrong? The engine not long ago had a full rebuild, and I dont go silly on it, so I doubt it is the cylinder/piston (I generally know what that feels like lol) But.. I will do a compression test tomorrow.. Any ideas of what to look for? I'm thinking maybe the choke is jammed inside the carb, or even the needle worn or something.. (The choke seemed to stop working like a month ago (The lever wont budge.. but when I manually pull the wire, I tend to get more rev's..) hmm... Cheers.-Sorry for the lengthy post, and good to see you all again Quote
Guest Posted January 19, 2009 Posted January 19, 2009 I feel cheeky posting this up, as I haven't posted in a long time. I have been amazingly busy with university exams, and a ton of other things. Now, to the subject at hand.I was riding my 125 Planet today (Only 1 month till the big bike ) but... The power started to dip strangely... and it would only o 20mph on full throttle, and feel 'unsecure'. I pulled over, had a look to make sure the cables were not stretched or anything odd. I saw nothing, so fired her up again. I continued my journey as I had an exam today! (20mph all the way) until suddenly the bike just decided to constantly rev and not stop lol! Even when I pulled the clutch in, it didnt seem to help too much (now that was scary lol) I managed to turn the bike off via key, and pull to the side (coasting). Now.. I have no idea what could be wrong? The engine not long ago had a full rebuild, and I dont go silly on it, so I doubt it is the cylinder/piston (I generally know what that feels like lol) But.. I will do a compression test tomorrow.. Any ideas of what to look for? I'm thinking maybe the choke is jammed inside the carb, or even the needle worn or something.. (The choke seemed to stop working like a month ago (The lever wont budge.. but when I manually pull the wire, I tend to get more rev's..) hmm... Cheers.-Sorry for the lengthy post, and good to see you all again I would sort your choke, if the bike is warm, then it starves the bike, and if cold, then will rev to warm the engine up, so i think you are on the right lines, check to see if the wire is trapped or the revs increase when turning lock to lock (fully right to left) if so the cable is operating when turning an MOT fail, and you need to sort our the routing of it.. same if its the throttle wire, Quote
Bill_on_a_bike Posted January 19, 2009 Posted January 19, 2009 I had a simular problem, i could do more than 20, but i couldn't go past about half throttle without it getting all upset, and then the final straw was it revving it's nut's off.I took my carb off over the winter, stripped it and cleaned it and let a bloke check my float heights. Balanced the carb so the bike isn't running rich.Gotta sort the back brake out this week before i'm back on the road, but i'll let you know if this sorts it out. Quote
softwarez Posted January 26, 2009 Author Posted January 26, 2009 Cheers for the replies.I have seemed to fix the revving case. The wire was getting caught on its housing, keeping it open. There is still an issue with 'stuttering'. I did a compression test, and that came out healthy, so I'm unsure on this one.. I am currently taking the carb apart now, but the Choke seems to be stuck in it's housing, 'VERY' stuck. Trying to remove it, which is proving a royal pain. I will clean the carb out and stick it back together. Still unsure why it could be stuttering though Cheers. Quote
Guest Posted January 26, 2009 Posted January 26, 2009 Cheers for the replies.I have seemed to fix the revving case. The wire was getting caught on its housing, keeping it open. There is still an issue with 'stuttering'. I did a compression test, and that came out healthy, so I'm unsure on this one.. I am currently taking the carb apart now, but the Choke seems to be stuck in it's housing, 'VERY' stuck. Trying to remove it, which is proving a royal pain. I will clean the carb out and stick it back together. Still unsure why it could be stuttering though Cheers. Could be something to to with the stuck choke, fix that and then you can discount it as a suspect. Quote
Guest Posted February 3, 2009 Posted February 3, 2009 My bike is currently in the garage again.. Same symptoms but i cant get above 10mph.. constant up and down idling and reving like before... The mech says hes never seen anythin like it. It will rev up and down faster when the indicators are on...wierd! Quote
Guest Posted February 3, 2009 Posted February 3, 2009 as its not the latest electro stuff like the R1 etc, then i'd suggest you have an electrical problem, bad earth? Coil,? (Thing that starts the plug/lead) disconnect the indicator relay and see what happens.. otherwise go through all the connectors and check them for integrity.. Quote
Guest Posted February 5, 2009 Posted February 5, 2009 Mr Bromley at spongate MOTS has fixed the wireing again, he said there was a natural well that filled the wiring part up with water thats why it was cutting out and giving strange symptoms, so hes fixed it and it ran great on the way home last night. I covered it, this mornin, left the choke open 3 mins as its cold. About 5 miles into my journey the damn thing bogs out at idle. So I pull over and screw the idle adjust all the way in, which helped but still bogging out. Any ideas? Quote
Guest Posted February 5, 2009 Posted February 5, 2009 have you fixed the choke? if sohave you tried it on choke? it is cold out.....either it is bogging out due to it not needing choke, but the choke is on, or it needs choke and you've turned it off.. try these and get back to me.. otherwise do you have a camera for video... post a youtube.. Quote
Guest Posted February 5, 2009 Posted February 5, 2009 Hi, The choke has been fixed, I think. Well it can be switched fully on and stay there or fully off and stay there. I usually give it a minute on choke and then put it off, will It damage/drain oil with the choke on full for the full ride? It doesnt cut out with the choke on full as much, Quote
Guest Posted February 5, 2009 Posted February 5, 2009 if it doesn't cut out as much on choke then i would change your plug to give a clean spark, otherwise you may have dirt in your carb.. Quote
Guest Posted February 5, 2009 Posted February 5, 2009 Thanks Walney! Ill give it a new plug saturday and let you know Quote
Guest Posted February 6, 2009 Posted February 6, 2009 Hi, The choke has been fixed, I think. Well it can be switched fully on and stay there or fully off and stay there. I usually give it a minute on choke and then put it off, will It damage/drain oil with the choke on full for the full ride? It doesnt cut out with the choke on full as much, Are you mixing Oil with Fuel?you bike is a 4 stroke so doesn't need it..Sorry but gotta ask.. Quote
Guest Posted February 6, 2009 Posted February 6, 2009 No sir It gets the oil from the sump Sorry but i had to ask.... Quote
Guest Posted February 8, 2009 Posted February 8, 2009 anyone ever heard of carb icing???its bloody freezing out there at the moment and lots of bikes suffer from it. Gives the bogging down symptoms....ps putting your choke on wont make any difference. In these kind of temperatures fuel has a tendency to cause this as the rate of evaporation of petrol further adds to the cooling effect. DRZ gets it quite a bit, it will go as soon as it warms up but in the mean time try fuel additive as this should reduce it.Bill....you cant have your carb balanced mate....you only have one so what was it balanced with?ps thats in response to the wont run right not the wont stop revving as that seems to have been cured Quote
softwarez Posted February 8, 2009 Author Posted February 8, 2009 Sorted it just tonight It was the Power valve control unit not working, I replaced that, aswell as a new power valve unit, and voila, works Quote
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