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| CG125 |
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CG125
Derestricted Danger
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| Ariel Badger |
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Ariel Badger
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| RhynoCZ |
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RhynoCZ
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 Posted: 17:44 - 27 Oct 2015  Post subject: |
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High octane fuel is only beneficial in a engine that was designed to benefit from it. The number tells you how resistant the fuel is to ''self detonation'' in, mostly, high compression engines. 
So high octane fuel in an normal engine won't have any effect on performance nor harm it, but not vice versa. If you've got high compression engine, then low octane fuel will affect performance and may even harm the engine.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor
Last edited by RhynoCZ on 17:46 - 27 Oct 2015; edited 1 time in total |
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| CG125 |
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CG125
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| Rogerborg |
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Rogerborg
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| Posted: 18:12 - 27 Oct 2015 Post subject: Re: Air cut off valve (CG125) |
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| CG125 wrote: | Replaced carb 6 months ago |
Why?
| CG125 wrote: | with the one which had air cut off valve in it |
What?
It's not helpful to assume that we know what you're talking about. What model, what carb, and how did you set it up and check the fuelling when you fitted it?
Are you running with a cone filter, funky jets or any other go-fasta gubbins?
| CG125 wrote: | can it be due to over tightening of valves |
Could be. It only takes half an hour to check the valves.
However, I would suspect the exhaust is sucking air. An exhaust crush washer is only supposed to seal once. I'd get it off and slam some assembly paste in there, see if that helps. If so, do it right, replace the crush washer.
One thing at a time, don't change everything and hope that something sorts it - you won't know what was wrong if it re-occurs.
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Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike |
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| CG125 |
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CG125
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| Posted: 19:42 - 27 Oct 2015 Post subject: Re: Air cut off valve (CG125) |
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| Rogerborg wrote: | | CG125 wrote: | Replaced carb 6 months ago |
Why? |
It was popping like hell at that time....my mechanic began trouble shooting by changing parts (CDI unit, coil etc) and seeing if popping went away. In the end it came down to carb when he switched it with his own used carb it went away. He said "your carb is the problem". So i told him to replace it with new. And he did and the problem went away.
| Rogerborg wrote: | | CG125 wrote: | with the one which had air cut off valve in it |
What?
It's not helpful to assume that we know what you're talking about. What model, what carb, and how did you set it up and check the fuelling when you fitted it? |
Sorry..... the cg's which came in Pakistan before 2012 had simple carb's with no air cut valves. God knows how they managed to prevent popping as air cut valves are specifically designed to counter it. Now 6 months ago when my carb was diagnosed to be at fault i had option to replace it with either the same or go with the latest (the one with ACV). Knowing what ACV was meant for i decide to go with latter. After that i have been getting superb mileage....but this cursed popping is back...it isn't that much at the moment.....but i am afraid it might increase.....and would effect my $40 carb again 
| Rogerborg wrote: | Are you running with a cone filter, funky jets or any other go-fasta gubbins? |
Nope it's bone stock and completely genuine. Here are its pics
https://goo.gl/photos/8BsvgczfyvhryZAE9
| Rogerborg wrote: | | CG125 wrote: | can it be due to over tightening of valves |
Could be. It only takes half an hour to check the valves. |
I say this because this problem seems to start after i had the last tuning done. Carb wasn't touched during tuning. Tappets were tightened via feeler gauge.
| Rogerborg wrote: | However, I would suspect the exhaust is sucking air. An exhaust crush washer is only supposed to seal once. I'd get it off and slam some assembly paste in there, see if that helps. If so, do it right, replace the crush washer. |
This seems to be the main culprit....actually i ended up breaking one of the tappet cover bolts inside so the head had to be disassembled for the rest of the bolt to be taken out. Obviously exhaust was also removed and i didn't replace the washel. However this took place about 2.5 months ago, so i doubt even this has something to do with it.
| Rogerborg wrote: | One thing at a time, don't change everything and hope that something sorts it - you won't know what was wrong if it re-occurs. |
To be honest i don't want to replace anything......this thing has already cost me almost $950 and continues to give me headaches.
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| CG125 |
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CG125
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| Posted: 07:13 - 02 Nov 2015 Post subject: |
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Anyone ???/
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Old Thread Alert!
The last post was made 10 years, 51 days ago. Instead of replying here, would creating a new thread be more useful? |
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