hi my trusty RE5 40k on clock has runs smoothly for 7 years. It was started every three weeks in the winter and ticked over until hot. First ride of 18, usual smoke but good start and tick over o and then off choke, some oil underneath (from exhausts I think). after 300 yards opening throttle causes engine to die and trouble restarting. when left tickover good again. changed plug no change, carb chamber full of fuel, any ideas folks, anybody near me in cumbria who is good with the mikuni!
Similar: I have a 1976 RE5 with 2000 miles on it. It is very hard to start and sometimes won't start for days, then cuts out when driven.
Is there a carb kit I need?
It's a good idea to remove the carb, give it a thorough clean, ultrasonically is really the only way to do it properly. There may be some carb kits left, send a Personal Message (PM) to member Jess, he may be able to help you.
One other thing that may help, I always clamp off the fuel line when the bike's not going to be ridden for more than a few days. The petcocks become leaky, are nearly impossible to fix and fuel manages to get past the carb main valve as well. You can flood the bike easily as you attempt to start it. Very frustrating.
My RE5 was exactly the same during nearly two decades of storage. Very hard to start etc etc. Since doing the above and going over the whole bike, she starts first time everytime and even fired up within seconds after 4 years on display in a museum.
There is hope.
Sydney, Australia. The new leaner, trimmer shed: RE5M, RE5A, GSX1100EX, GL1800/Champion sidecar
thanks for thoughts. took down carb and cleaned everything and it works just fine now. I will fit an in line petrol tap just to stop the obvious build up of fuel in the engine when left standing for a while moilabh
I have been successful in gently carefully opening up the petcock and caution that you don't loose the soft spring, and carefully fitting a new custom o ring which may be the common source of the pet cock leak in my experience. A in line valve will for sure fix it too. Caution as the diaphragms/gaskets will be stubborn and stuck and you may risk tearing. I soak in liquids, diesel etc. when opening the petcock up. If the o-ring surface is corroded, clean it up with a wood dowell, etc. to clean the o-ring sealing surface.
Last Edit: Jun 21, 2018 15:53:00 GMT -5 by timpa136
Modern fuel dose not work well with old diaphragms and seals . The original choke and accelerator diaphragms become brittle and not working after 40 odd years. They are hard to find and replacent is very important for running correctly for
Now Bikes RE 5 M,(UK )Blue 1974 RE 5 M (UK) X 6 H/D XR1200 X1 Sports RE 5 A (UK) Black 1976 Norton Rotary Classic 1988, Norton IP2 1986