Author Topic: NEW PROJECT (BUT NOT A THUMPER)  (Read 45818 times)

xbally

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Re: NEW PROJECT (BUT NOT A THUMPER)
« Reply #105 on: April 13, 2026, 09:17:30 AM »
More woes with this project.
I got the carbs back on and tightened the clips with the new screws but the thing still wouldn't start and would only fire using Easy Start.
My mate diagnosed stuck floats from debris in the old fuel pipes.
Tank tap and pump can be ruled out as I was poring fuel directly in to the carb fuel rail.
I've also fitted a new fuel filter as a matter of course.
I removed the carbs and took them over to my friend on the 650 Interceptor when we had a brief but lovely few days of great weather.
He serviced them again and blew everything out with compressed air.
Over the weekend I've been struggling to refit the throttle cables as I can't seem to get enough free play.
Anyway they're on now.
I've got some new correct style of  caps for the deeply recessed spark plugs so we'll see if the thing can fire up now?
HONDA CB250RSA ROYAL ENFIELD GUERRILLA 452

Moto63

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Re: NEW PROJECT (BUT NOT A THUMPER)
« Reply #106 on: April 15, 2026, 07:14:54 AM »
Fingers crossed and the best of luck Martin 🤞

xbally

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Re: NEW PROJECT (BUT NOT A THUMPER)
« Reply #107 on: April 15, 2026, 02:28:33 PM »
Thanks for the interest and encouragement Michael 😊
Update: on Monday I fired it up with a remote fuel supply into the carbs and it ran well.
So I refitted the air box, reconnected the fuel lines, pump tank  and filter but when I tried to start it yesterday there was a leak from one of the fuel lines. I'd used the original jubilee clip but using the correct fuel pipe fasteners cured it.
I managed to get it running again on all 4 cylinders and it ticks over as well.
The next problem is the indicators have packed up. This has already happened once and was fixed with a new correct spec relay. I'm guessing in putting it back together I've disturbed the wiring, the connections are not great so I'll need to trace that through again as the relay is under the left side panel which could have been affected when I refitted it
HONDA CB250RSA ROYAL ENFIELD GUERRILLA 452

iansoady

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Re: NEW PROJECT (BUT NOT A THUMPER)
« Reply #108 on: April 15, 2026, 03:26:28 PM »
Unspoilt by progress as a local brewery used to say. But you're getting there by the sound of it. Good luck. I hope you like it when it's done, unlike my single foray into the 4 cylinder world. Nasty buzzing little (or big) things.....
Ian.
1964 Norton Electra
1969 BSA-Suzuki-Steib S501 (the B'Zuki)
1948 BSA C11

xbally

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Re: NEW PROJECT (BUT NOT A THUMPER)
« Reply #109 on: April 15, 2026, 04:18:36 PM »
Thanks Ian.
Fuel leak is back .
Banks' brewery was it? Beer at home means Davenports was another.
I'll have to wait and see if I like it. If it's a gutless wonder that has no torque unless you absolutely thrash it probably not. I've had quite a few four cylinder bikes over the years. The old air cooled 400/4 Honda wasn't too bad. My last Honda 4 was a 96 CBR600 which never ran right so I should have been warned.
HONDA CB250RSA ROYAL ENFIELD GUERRILLA 452