27Woodruff07

Planning to order a kit of parts and then hand the engine over to someone who knows Hondas better than I do.

Over the past two days I've rebuilt my original carb and this evening fitted it to my replacement engine. Before starting it up I took the plugs out. both were really rusty and caked in dirt. One plug had a damaged thread and what looks like a hellicoil fitted in the head. With plugs refitted I cranked the engine over several times and still had no ignition. Adding insult to injury the engine started to pour oil out badly between the block and the outer casing and the screw and lock nut that tension the cam chain tensioner was rocking backwards and forwards as the engine turned over. Beginning to suspect that the running engine is in fact a bit of a lemon. As I wanted a reliable commuter, I'm going to bite the bullet and order a kit of parts and get the original engine overhauled properly and then see if I can get a new carburettor to finish the job off. Sometimes you end up spending more time and money doing things on the cheap than you do if you do things properly.

My original engine would not idle .When I stripped down the carb I found that the tiny holes in the jets were all blocked up so I did an overhaul. With the replacement carb that came with the second hand engine, the engine would not fire and it leaked badly ( I assume something like a stuck needle valve in the float chamber ) . So on the basis that both carbs looked identical I put the original/overhauled carb onto the second hand engine to see if it would start - no leaks now but still no starting. I did resort to some easy start but to be honest if the engine won't fire on nice new fuel, its not right yet. I know nothing about bikes really- can someone tell me if the pulse generator could generate a spark when tested but not somehow under load when connected up? Yes by the way the fuel is new- the fuel in the tank when I started was a nice brown with bits of rust in it. Thankyou to everyone who has replied by the way- it is appreciated.

I’m finishing off the restoration of a 1997 grey import Honda CD125t Benly that I intend to commute to work on. It’s the one that looks a bit retro that you can see people from Korea and Sri-Lanka riding on YouTube with the full mudguards and black paintwork. I've owned it for twenty years but its been out of use since 2003. It was running but kept stalling before restoration. I had to take the head off for welding (top mounting lug broke off and was left attached to the top frame mounting bracket, spark plug thread all mashed up. After re-assembly the engine had a big fat spark and fuel, turned over freely but refused to start. I checked several times and the timing was spot on. So I gave up and bought a CB125T second hand engine off of eBay (seller assured me that it was running okay and I do believe him) However, the wiring for the stator on the new engine was different (fewer wires and different colours plus the wires had been cut off from the frame really short) so I simply fitted my original stator and rotor onto the replacement engine and plugged it in. Ready to go… except not. I have the same problem- fuel , spark and spot on timing yet turns over and won’t start. What have I missed? Is there any way to test the pulse generator? Would the trigger for the pulse generator be in a different point on the original rotor compared with the one that came with the engine? Anyone got any ideas?