CG Bogger

[Alpha-9]

Hi Hi

Me again
Trying to get this random CG going nice while I sort my YBR out

It's been sat for a year and the battery is dead, no problem as it's a CG you can take the battery out and it'll be fine, my housemates is equally dead and his is running nice and smooth

I can start it and get it idling just about after some fingering of the choke (which i'm very much not used to, touchy things)
Once it's warmed up I can give it throttle and it shits out a load of smoke, but otherwise a tiny amount of throttle kills the engine, depending on the choke, only seems to work on half choke

The problem is with any load on it giving it any throttle bogs it until it stalls, if you use a tiny bit you can just about keep going, I had it stop as I was testing it out and bump started it a few times, surprised how well bump starting works, nothing like my ybr!

I'm thinking the carb needs to come off and the pilot jet needs cleaning...but I don't know wtf that is

The guys had the rocker off at some point as it's got bright orange gasket seal crap around it, it sounds quite 'clicky' so i'm eager to do the clearances again on it, as long as the bolts don't snap and shit, already took the gear lever off to look at the front sprocket and snapped the bolt holding gear lever on.. I have discovered if bolts are brown and rusty they are a cunt to get off, if they are white, they're gonna snap!!

ACF50 grease is awesome by the way

Anyway, it's interesting to me as i've not had a carbed bike and I like attempting to fix stuffs

I've changed the spark, changed oil and checked fuses etc and played with idle times and choke, not done fuel mix yet though but not sure if that's the problem

Purely a carb issue?
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Fzr-600 1999

[.....]

Take the carb off, give it a good going over. Check all the jets are the right ones, check the needle valve is sealing OK and the float height is right.

Once you know that is all good then if the problem is still there then you can start looking at other things.

Get a working battery in there as well as that's one less unknown to worry about.

[Alpha-9]

[.....]

They do have lots of fiddly bits but usually it's easy enough once they're off the bike.

Just have a clean workspace and somewhere to put the bits as you take them off - you don't want them getting lost.

Look at some videos on Youtube, it will give you an idea of what to expect. Get some carb cleaner too, a few quid from your local auto factors. To unblock the jets put them between your lips and blow.

[Alpha-9]

[monkeyman]

jets are just small brass orifices/restrictors, the bike will will proberbly only have 2 fuel jets which are the pilot and the main. you will see them when you take the float bowl off.

in more advanced carbs you often get adjustable air jets, which are brass jets for restricting air flow into the fuel circuits.

your bike will have air jets but more than likely will be machined into the carb and will be none adjustable, so you need to check these are clear.

They will be small holes at the front of the carb, just below the carb intake.

All jets will have their sizes stamped into them, as mentioned before check they are the standard size.
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Im not the best, but im in the top one
RM 250, Husky TE610, K1 GSXR 750

[N cee thirty]

see what it does when you take the cover off the airfilter and air filter out
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[Alpha-9]

[N cee thirty]

mine did what yours did when the filter was blocked, even touch the throttle and it'd cut out, ok when filter was fucked off for a short time.

cleaning carb is easy enough, i did a step by step guide somewhere on here, is good practice.
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[paddlesat16]

i'd also compression test it if its blowing smoke, could need a de-glaze and new rings etc. Then sort the carb.

Regards
____________________
I once saw a bloke shagging a donkey.... in Saudi arabia. Theory Test Passed 26/10/09 Mod 1 Passed 26/4/10, Mod 2 Passed 7/6/10 Current Bikes Suzuki GSX1400 K5, Aprillia Pegaso 650, Suzuki DR350T.

[Alpha-9]

[kestrel]

[multijoy]

Are you sure you're switching the choke off? As that sounds like what mine used to do if you flicked it the wrong way!
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'11 CBF1000A, '99 C90, '98 CB500
silky666: He rode amazingly well considering his bike is the weight of a small van and had slicks on.

[Alpha-9]

[multijoy]

Mine (a '98) was down for off (as in no choke action), middle for half, up for full.

This any use?
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'11 CBF1000A, '99 C90, '98 CB500
silky666: He rode amazingly well considering his bike is the weight of a small van and had slicks on.

[Alpha-9]

[crazymotorbik...]

Hey,
Here's a quick diagram of the carb i found on google:

Your carb may differ slightly (like mine did) but the layout is the same.

https://i49.tinypic.com/dg302q.jpg

Carefully unscrew the pilot jet and main jet. Next boil a pan of water and drop them in for 10 minutes. A rolling boil is best as they will be bounced about. You'll be quite surprised how much crap this loosens.
This will not damage the jets.

Remove them from the water and blow the jets through with compressed air. This will remove most of the water and any crap that's left. If you want them squeaky clean squirt some carb cleaner through and then blow through again with compressed air.

My CG125 is finally running lovely again. Starting even from cold is much easier with no hesitation when pulling away.

Hope this helps,
Shaun.

[Alpha-9]

Isn't there a way to clean it without taking it off?
I'd rather not as I can see myself losing all the bits and not being able to put it back together again!

Did valve clearances today and took the air filter out and eyed it all up, seemed fine, put it back together better than it was
Valve clearances were way out and that seems to have sorted it's ticking

Took it round the industrial estate and still bogging though
It reminds me of my YBR when the battery was dead and spark fucked, that low down struggling grunt
____________________
Fzr-600 1999

[J.M.]

[kestrel]

[Alpha-9]

I went out to eye it up and to play around with the fuel mix...annnd it's raining

And yes JM that's what I said
Yeppers, will just man up and go for it then!
____________________
Fzr-600 1999

[kestrel]

[Alpha-9]

[N cee thirty]

take the carb apart,all you have to do is unscrew the throttle at the top,unscrew the cable at the side for the excellerator pump

then undo the 2 nuts that connect it to the rubber manifold,then pull the carb out,undo the float chamber (3 scews) and you'll see the jets.

get a flat head to the jets and unscrew them and blow through them,then get a 10mm ? spanner and undo the bits the the jets go in to,blow through all these and clean them up

then do the stuff in reverse order and your bike shall work...hopefully

i knew i'd find it somewhere
____________________
'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

[crazymotorbik...]

If you get stuck I'll send you some more scans and instructions from *erhem* Google

To be honest it really is easy. I had the carb off in minutes. Only thing i really needed to know was how to setup the accelerator pump. However even that's a piece of p*ss.

Cheers,
Shaun.