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Messages - Phil C

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Singles / Re: Choke
« on: 28 January, 2018, 21:39:24 »
Amal 626  L301

Singles / Re: Choke
« on: 28 January, 2018, 20:40:42 »
I recently bought it - the problem came with it.

Do I need to know anything about jet sizes, needle positions, etc, and if so where would I find out, given that I don't think the bike would have had this type of carb when new? I think they had monoblocs.


Singles / Re: Choke
« on: 28 January, 2018, 19:32:15 »
No, it's a Concentric.

Singles / Re: Choke
« on: 28 January, 2018, 18:40:35 »
Really helpful suggestions, thanks both of you. Something I'm wondering about though: you say it's possible that air is leaking into the engine, either via a worn throttle slide or its bore, or via a bent mounting flange, and you explain that either of those would give me a weak mixture. But if that were happening why then would my spark plug be black and sooty? I'll do as you advise and take the carb off and have a look at it (it will be good learning for me) but could you explain the above please? As I said at the beginning of the discussion, the machine is asking for choke and yet has a black sooty plug.  Phil (novice.)

Singles / Re: Choke
« on: 28 January, 2018, 15:25:31 »
Thanks for the suggestions. I did about, say, three miles on it this morning and the plug was black and sooty when I got home.

Being a novice, I don't know what condition the carb is in. As I say, I know nothing about carbs other than what I've read, so don't know whether it has the right needle position and jets. How do I find out what they should be? It's an Amal 626 L301, which I think is a Concentric modal and I guess would not have been the model of carb on the bike when new. Obviously I'd be up for taking it off and having a look at it, but I'd need to know what I'm looking for.

Ignition timing is not yet checked. Would you do that first, or take the carb off?

I haven't got a compression tester - are they expensive? There's no visible smoke to speak of coming from the exhaust, if that's significant.

Thanks again.        Phil (novice.)

Singles / Choke
« on: 28 January, 2018, 12:37:40 »
My recently-purchased 1965 B40F won't run without a bit of choke, even when warmed up. But the plug is black and sooty. So on the one hand the bike appears to be saying it needs choke, ie it needs a richer mixture, but the plug is telling me the mixture is too rich. Any thoughts, please?   Phil (novice.)

The Star and Garter / Re: Star, Blue Star, Empire Star
« on: 26 January, 2018, 21:11:28 »
So in my case being allocated the title Blue Star represents a recognition of my asking lots of stupid questions! (don't mean to sound ungrateful!)

The Star and Garter / Star, Blue Star, Empire Star
« on: 26 January, 2018, 15:44:54 »
What do these things next to our names on the forum mean?

Singles / Re: Exhaust sealing
« on: 26 January, 2018, 14:22:46 »
Is it necessary? I recently took my exhaust off, no sign of sealant, put it back together without it as well. By the way, couldn't see any purpose in the finned rose at the entrance to the cylinder - it's just held on with a kind of clip, appears to serve no purpose other than look nice. Phil (novice)

Singles / Re: Points cam
« on: 26 January, 2018, 14:19:33 »
It's all very interesting. Thanks very much anyway. I'm bound to be back soon with another stupid question!

Singles / Re: Points cam
« on: 26 January, 2018, 12:58:25 »
My points are in the photo at the top of page 1 of this discussion - I don't see any felt pad?

Also, any idea about the paper disc? (purpose? material?)  Phil.

Singles / Re: Points cam
« on: 26 January, 2018, 10:03:04 »
Good morning everyone, I've just had a look at doing that, but it appeared to mean putting a sharp bend in the connector, so I left it alone. Under the cover is a disc made of some kind of thin paper (see new photo attached) - doesn't appear to be gasket material, more the consistency of greaseproof paper - to help weatherproof the points etc I guess? Also, where is the felt pad which should have a small drop of oil? Thanks again for your help.

Singles / Re: Points cam
« on: 25 January, 2018, 12:41:05 »
Oh okay, thanks.

Singles / Points cam
« on: 25 January, 2018, 10:46:30 »
I thought I'd have a look at the points on my "new" 1965 B40 (side points.) Does the cam look the right profile? I was expecting a circle with a high spot, but this (see photo attached) looks to me (novice) more like a circle with a flat. Thanks in advance. Phil.

Singles / Re: Kickstart cotter pin
« on: 24 January, 2018, 16:33:20 »
Fitted the new pin, kicked over about six or seven times before it started - kickstart lever seemed to jam a bit at one point but then was okay. I guess I'll see how it goes. Anyway, having made a big deal out of a very small job, I'll just say thanks to everyone for their advice. Great fun!

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