At my wits end!

Jw73 · 04-02-2021, 05:59 AM

Hi all. I ride a brixton bx 125. Fuel injected. To cut a long story short, I've had intermittent starting problems for a few months now. Sometimes starts first time, some days it doesn't. Recently won't start from hot but if left for 10 mins it will.
Had a new problem last week where the engine would feel like it's bogging down and about to stall when riding but then picks up again. Could be at 5mph or 50mph. Added some redex to fuel and it solved problem for a week or two. Another problem has raised its ugly head the past week. When I'm stationary in traffic, the revs sometimes rise to 4000rpm with throttle closed and clutch lever pulled in. Was fine the next day, but the opposite happened. Idle was fine but revs kept dropping so the bike stalled. Coming home from work yesterday the bike cut out while actually riding it at around 20-30 mph. I thought it may be the throttle position sensor. Replaced that but not cured the problem.

With the new tps fitted, it idles fine but bogs down and stalls when you pull off in first. Put the old one back on and ran fine on way to work but kept cutting out on way home.

Any ideas?! Sorry for the long post too!

04-02-2021, 05:59 AM	#1
Jw73 Join Date: Jan 2021 Posts: 15	At my wits end! Hi all. I ride a brixton bx 125. Fuel injected. To cut a long story short, I've had intermittent starting problems for a few months now. Sometimes starts first time, some days it doesn't. Recently won't start from hot but if left for 10 mins it will. Had a new problem last week where the engine would feel like it's bogging down and about to stall when riding but then picks up again. Could be at 5mph or 50mph. Added some redex to fuel and it solved problem for a week or two. Another problem has raised its ugly head the past week. When I'm stationary in traffic, the revs sometimes rise to 4000rpm with throttle closed and clutch lever pulled in. Was fine the next day, but the opposite happened. Idle was fine but revs kept dropping so the bike stalled. Coming home from work yesterday the bike cut out while actually riding it at around 20-30 mph. I thought it may be the throttle position sensor. Replaced that but not cured the problem. With the new tps fitted, it idles fine but bogs down and stalls when you pull off in first. Put the old one back on and ran fine on way to work but kept cutting out on way home. Any ideas?! Sorry for the long post too!
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