micknal

Had another go at starting my problematic M80 this morning. After a bout 10 kicks and nothing I whipped out the plug and it was still dry. A quick squirt of fuel down the plug hole one kick and burst into life. I was still thinking that this is a carby problem as the fuel wasn't getting into the combustion chamber. I took off the float bowl and checked the float height , it did seem rather low so heated up the bowl and tapped the brass float pin housing down a little so that the fuel level in the bowl would be slightly higher. Put it back together , tickled till she flooded and she started first kick , a little hesitant at first but did pick up.Warmed her right up and rode down a local green lane for about 4 miles. Many thanks to the guys who have made some useful suggestions to my problems. Now I would like to ask you all from your experience what would the bike be worth today ?? Its a 1971 M80 with 2 previous owners. It is also fitted with a Sammy Miller Hi Boy frame. Also where would be the best place to sell it. Many thanks Micknal

Thanks for your offer B40RT but have already ordered one off ebay. Does it matter where it is placed ( as it isn't an original one will not fit in correct place), or wired into the circuit ?? Micknal

Thanks for that Greg. Take it that any condensor could be utilised then ? ? ? Micknal

IT LIVES !!! After cleaning out the carby once again ( there was still some gunk in the airways) and refitting the engine burst into life - just !! It didn't sound very happy and died after a few seconds but in fired ok. Can you suggest to me what I need to do now to get running sweeetly. Many thanks Micknal

Gents Oil seals have now been replaced. Still will not start. Squirted fuel down plug hole - fired straight away. Think this is now pointing to a carby problem so going to remove and ensure all is well inside. Anything particular to check within ???? Micknal

Just an up date. Have managed to remove oil seal on mag side. Seal feels quite hard, not soft and pliable. Have ordered new seals today and hope to tackle clutch/flywheel side over the weekend. Micknal

Many thanks for your suggestions. tankygsy - Tried this today but unfortunately didn't do the trick. PSchrauber - Petcock has been overhauled and given a clean bill oh health.Rubber has been inspected and is fine.I might take off carby again and ensure ALL airways are clean and free from gunk. Hewson - Think this might be the way to go. Can anyone give me a quick run down of the way to gain access to the Crankcase seals and how difficult/easy the job is. I do have a fairly well equipped garage and have a fairly good background in motorcyles engines ( I actually used to work for Weslakes building 500cc speedway engines). Many thanks once again for your input. Micknal

Gents I have recently inherited my fathers Sherpa T 1971 M80. It has stood at the back of his garage for probably 20 or more years without being started. So I have decided to try and get her going. First took off petrol tank and carb which were all gunked up. Cleaned all the jets with airline and ensured all residues were removed.Removed fuel tap and thoroughly cleaned ( replaced cork washer ). Replaced fuel lines as these had gone'hard' and brittle. Thoroughly swilled out the petrol tank. Checked for spark and was pleasantly surprised to see a nice 'fat' blue one. Put some nice fresh petrol in tank and flooded the carb. Moment of truth , I kicked , nothing , and kicked , nothing , this went on for about 5 minutes and then the penny dropped somethings wrong. So I resorted to an old trick ( taught to me by my Father in my Francis Barnett years) , drop of petrol on the plug ( after removing from engine ) set light to it and let it burn down. Couple of squirts of petrol down plug hole , replace plug and kick. Instant life for about half a second , so problem can't be too bad ( thinks to self). I tried kicking over for longer ensuring carb was flooded and even had the throttle wide open but couldn't get a wet plug. So the problem with the engine is perceived as this - Assume electrics okay as engine runs if fuel is in combustion chamber Carby is cleaned and as far as I know functioning as it should do. Petrol is new therefore not old and stale. For some reason fuel is not being drawn into combustion chamber. Unfortunately my experience with 2 strokes ends here. I seem to recall the bike was always a pig to get started but once running and warmed up was okay. I'm not quite sure where to go from here apart from pulling the carby again and seeing if I might have a blocked airway. I would like to invite any suggestions from you guys, who have obviously much more experience with Bultacos than I do. Many thanks in advance. Micknal