SOHC.co.uk Forums > CB500/550
Wont exceed 4,500 rpm then stalls and wont restart - on route to MOT
totty:
The filler cap breather seemed to be blocked as I couldn't blow through it, but I need to wait of the tax disk arriving in the post before I can test ride it.
Cheers
Allan
Bryanj:
What exhaust you got now, too much wadding will give exactly that symptom----I have a wide open Marvin on one that needed "Quieting" every year and it only ever got 1/2 way back from MOT
totty:
It's a Motad. I've got no idea how it should sound so I don't know if it's been messed with.
florence:
when my bike goes onto reserve it takes ages for the fuel to come through and it stops flowing a long way before it is empty. I always keep my tank as full as possible to avoid this problem. If your tank has been low, maybe you have picked up some debris from the bottom of the tank which has blocked jets in you carbs.
If your bike is overheating that is a different matter. How hot do you mean? You mentioned that you have no oil warning light. I would advise to find out the cause of that before riding it any further as you may cause damage if oil isn't getting around properly.
If your bike has electric start, take out the spark plugs to make it spin over easily on the button, remove some tappet covers and run the engine over on the starter motor and see if oil comes up.
Yoshi823:
Many moons ago when I first started to ride I was out with some friends for the day when the bike started to give all sorts of revving problems & apparent overheating. It ran like a 8-stroke instead of a 4-stroke. I too took the valve/tappet cap off to check if oil was getting around, but the overheating was really cooking the lubricant. I was new to biking so I didn't know what to do next, so I started at the basics & checked the points gap. It had slipped & opened up the gap quite a bit. After regapping it went like a rocket...as far as a Honda 125s could in those days, but a lot better than previously. But I had learnt a lesson to check this sort of thing more regularly, especially as it was my only form of getting to Navy college in those days.
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