<-=- Club Bevel Heaven -=->

I didn't think it likely that the float valves would have aged and hardened. You could be right; but every spring I have to replace float valves in Dell'Orto carbs, float valves that have stopped sealing in less than 4 months of inactivity. And judging from reports on other forums, I'm far from bei...

What should I do next? Thanks. Very, very simple. Buy a new float valve from Steve ... https://store.bevelheaven.com/Dellorto/Float-Needle-Valve-250/ ... and install as per the instructions above. A wise man would do this with both carbs. You might also consider buying one of Steve's float height g...

Gardner wrote: ↑

Tue Oct 15, 2019 5:49 am

<snip>Hopefully no debris finds it's way in.

I think you can sleep ok. The Goldline range never had any covers in the first place, and I haven't heard of anyone having had problems (and I haven't had any either ... )

Ok, let's start by going back to basics :) . Why do carburetor manufacturers install accelerator pumps? Pumps are fitted to provide the temporary shot of additional fuel that is required under rapid acceleration. Without pumps, the engine may starve and falter. This Wikipedia description is pretty g...

Took some time to find, but here's your answer, Andy ... Regolatore.jpg Explanation: G = giallo = yellow = alternator x2 + B = battery positive L= luce oppure spia = idiot light C = chiave = ignition switch It's also possible to work it out from the F1 wiring diagram .. but it ain't easy :shock: P.s...

Hi Brian, A few thoughts, FWIW: 1. My starting point would be the information available in the published reference books, notably in Ian Falloon's various works (Ian being one of the few people who has actually looked at the original records, such as they are ...). 2. The data on Robert Miller's reg...

Excellent post, Rick. Glad to hear things are working well and thanks for taking the time to do the write-up.

Appreciated.

Craig

Many - most? - tires these days don't have a dot, Richard. As per Gardner, just balance carefully after fitting.

1. See the narrative below for how to replace the HT leads in the coil. Alternatively, you might try to buy a second-hand one. They were used on (for example) the contemporary Suzuki GS400 models (I think the larger capacity GS models used a similar but twin output coil). Couple on ebay at the mo' ....

Another thought ...

You say you checked the pick-up wiring for continuity. Have you done the same for the cables between the Bosch boxes and the coils?

And don't forget to check the ground connections!

1. If it really IS intermittent firing that you’re getting, then your suspicions should trend towards ignition. Carb problems tend to exhibit themselves as ‘constant’ problems - classically, a refusal to idle. 2. I can’t comment on your diagnostic technique for slide wear - I don’t know whether it w...

Regarding float height, the needles have a spring to decrease vibrations hammering the needles. I've read the "sit the carb on the side and measure 18mm. But is this without depressing the spring? I assume I will get the needle to seat, then lay the carb horizontal and adjust the level so the sprun...

Well, it's basically the springs that control the clutch engagement, so that's where I'd look. Also, you say you've fitted a competition clutch (why?), and that probably explains things a bit too. If you gave it more revs, it probably wouldn't stall. But it will send you down your driveway like a bu...

Hi and welcome to the Forum - I see this is your first post. 1. Flooding. Change the needle valves - I see 'valves' in the plural 'cos you might just as well do the one in the other carb at the same time. They operate under very light pressure and modern fuels are unkind to the tips. Result: the val...

Good - all solved!