Royal Enfield Bullet 500 '94 Trouble starting

[piratebiker]

Was running fine, couldn't start it next day, eventually started but running but very lumpy, won't idle & backfires. Any help. Thanks.

[Easy-X]

Sounds like fuel starvation. You hearing the pump prime when you turn it on?
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[jaffa90]

It does sound like fuel starvation,
Is it the carb version or fuel injection?

[The Shaggy D.A.]

[piratebiker]

Carb.

[stinkwheel]

How is it for compression?

Battery charged? (they don't run well on a very flat battery). Getting good deflection on the ammeter when you turn it over?

Ignition timing would probably be my next concern. Faulty condenser can also cause such issues.

No harm in cleaning the carb out although it's probably an electrical problem. The rubber type intake manifolds can split after a while which would help nothing.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Easy-X]

[piratebiker]

Stinkwheel solves it again, yep, on closer inspection the rubber connected to the engine is split. Where can i get one? Thanks man.

[stinkwheel]

[piratebiker]

Thanks Stinkwheel, the new rubber manifold sorted it, runs like a dream again.

[piratebiker]

The plugs a bit black & sooty, running a bit rich? Is there an adjustment on the carb? Thanks.

[stinkwheel]

What sort of carb? Mikcarb or Amal?

In either case, some how-to sheets here:
https://accessories.hitchcocksmotorcycles.com/Technical-Notes
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[piratebiker]

Not sure,

[Easy-X]

That looks like a Mikcarb - a copy of the Mikuni VM28 which funnily enough I seem to have on my old DT

Might want to report back with the main jet size and the needle's clip position.

Oh, and cable ties aren't a great way to secure hoses. I would suggest getting a jubilee clip or similar.
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[stinkwheel]

As above, standard mikcarb. They are generally pretty reliable.

A black plug CAN be running rich. It can also be burning oil.

There is a jetting guide for mikcarbs on this page:
https://accessories.hitchcocksmotorcycles.com/carburettor-parts
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.

[Tdibs]

How snug is that boot on there with the cable tie? looks like its not quite home, possible leak?
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Previous : 09 Vanvan 125| 02' Sv650s || Current: 1999 Xj600n | 1992 DR650 RSE | 2005 Fazer 1000

[stinkwheel]

[piratebiker]

The boot is on tight, I'll check the air filter, thanks.