SOHC.co.uk Forums > CB350/400

fueling problems

<< < (2/3) > >>

K2-K6:
Sounds good, at least you should be able to get more of productive run out on it to fine tune a few things.

If it still seems lean you could try it with the needles pulled up (circlips down) one notch to find if it improves or not.

Plugs would normally be NGK 8 grade I think.

You should be running at about 14.0 volts when charging flat out (about 2000rpm upwards) to be healthy.

There was some discussion of an informal meet-up at Box hill this summer so we'll have to round up a few that are near to meet a few of us.

Where about in Sussex are you?

peteb:
hi sorry i have not got back on here sooner. bike seems to be running pretty well now so lets hope we get some decent weather soon.

im in a place called Hurstpierpoint just north of brighton so box hill would be good.

i will try to get a photo of the bike up soon

cheers pete

Boggieman:
Hi All

Apologies for slightly hijacking this thread, but if you do not recommend the NGK 'R' plugs, which ones should be used. Only I am currently having problems with my 400/4, as it will not fire on the Number 1 cylinder. I have a good spark from the plug, the cap is good, and the other thre cylinders fire just fine.
Would this point you in the direction of the carb', maybe a needle dropped or float sticking?
Any help would be gratefully received.

Ian

470four:

--- Quote from: Boggieman on August 17, 2011, 09:40:20 AM ---Hi All

Apologies for slightly hijacking this thread, but if you do not recommend the NGK 'R' plugs, which ones should be used. Only I am currently having problems with my 400/4, as it will not fire on the Number 1 cylinder. I have a good spark from the plug, the cap is good, and the other thre cylinders fire just fine.
Would this point you in the direction of the carb', maybe a needle dropped or float sticking?
Any help would be gratefully received.

Ian

--- End quote ---

Hi Ian

Standard plugs are D8EA NGK, or DR8EIX Iridium   :)  Got Iridiums in mine, no problems...

Would assume yes - carbs problems, fuel flow related? You have good flow out of the carb with fuel supplied and the float bowl off? Mains & pilot jets clear? Is number 1 exhaust staying cold on tickover AND part-throttle??

Boggieman:
470four

Thanks for that, will look into getting some D8EA's. Exhaust on No.1 gets warm but the others get so hot you cannot bear your hand on them.
Plenty of fuel is going to the carb, and the plug is wet when we removed it, but when we blocked off the air intake to the carb' there was no appreciable difference. Possible air leak on inlet manifold???

Appreciate all your help
Ian

Navigation

[0] Message Index

[#] Next page

[*] Previous page