Get my beautiful Ariel Red Hunter to run properly??
Its been unused for a year, but preserved perfectly inside a vaccu-bag and 2 carrier bags full of dessicant.
I built this back in 1981, and I have just looked after it since. Managed 2 rallies into France on it, 'Balade de Clous Vieux'. (Walk of the Old Nails).
Its never been fantastic at ticking over, alway requiring a little blip of the throttle from time to time, but always ran very nicely.
So, looking at the short video by Pro Plumb of his for sale Matchless, I was inspired to make the effort to sort out.
I have now stripped the carb (monoboc 376) twice, the first time seeing jets with Ethanol fuel deposits. Soaked in thinners, blown through with the airline, and examined with an eye glass. Satisfied I re-assembled and refitted the carb.
Gallon of fresh petrol fed to the tank.
It ticks over a little better, but still not good enough. It runs smoothly to start with, and then races a little, before settling back down and then gradually petering out, requiring that little blip of the throttle to keep going.
But the thing that has now got me after a spin round the block, it will just not 'pick up and feels 'strangled'.
Whats happening?
The only thing that I can see with the carb is that the very, very fine thread at the top of the body is badly worn, and in order to screw the knurled brass ring down to hold the carb top in place, 2 winds of ptfe tape is necessary. Could air be getting in here and going down the centre of the slide.
Oh, by the way, the body has previously been turned true (round) and a brass sleeve fitted to the slide. So no air getting in around the slide.
Could the timing be out enough for this to occur?
Did check the timing (magneto) and looked spot on.
This is driving me mad, and I'm nearly at the point to order a Minkuni carb. Checked dimensions and looks to be a pretty close fit with the Amal.
Am I throwing money at a problem that is just sitting just staring me right in the face but yet I cannot see it?
Its been unused for a year, but preserved perfectly inside a vaccu-bag and 2 carrier bags full of dessicant.
I built this back in 1981, and I have just looked after it since. Managed 2 rallies into France on it, 'Balade de Clous Vieux'. (Walk of the Old Nails).
Its never been fantastic at ticking over, alway requiring a little blip of the throttle from time to time, but always ran very nicely.
So, looking at the short video by Pro Plumb of his for sale Matchless, I was inspired to make the effort to sort out.
I have now stripped the carb (monoboc 376) twice, the first time seeing jets with Ethanol fuel deposits. Soaked in thinners, blown through with the airline, and examined with an eye glass. Satisfied I re-assembled and refitted the carb.
Gallon of fresh petrol fed to the tank.
It ticks over a little better, but still not good enough. It runs smoothly to start with, and then races a little, before settling back down and then gradually petering out, requiring that little blip of the throttle to keep going.
But the thing that has now got me after a spin round the block, it will just not 'pick up and feels 'strangled'.
Whats happening?
The only thing that I can see with the carb is that the very, very fine thread at the top of the body is badly worn, and in order to screw the knurled brass ring down to hold the carb top in place, 2 winds of ptfe tape is necessary. Could air be getting in here and going down the centre of the slide.
Oh, by the way, the body has previously been turned true (round) and a brass sleeve fitted to the slide. So no air getting in around the slide.
Could the timing be out enough for this to occur?
Did check the timing (magneto) and looked spot on.
This is driving me mad, and I'm nearly at the point to order a Minkuni carb. Checked dimensions and looks to be a pretty close fit with the Amal.
Am I throwing money at a problem that is just sitting just staring me right in the face but yet I cannot see it?