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hornet_guy |
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hornet_guy Two Stroke Sniffer
Joined: 24 Jan 2021 Karma :
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Posted: 15:41 - 24 Jan 2021 Post subject: 2000's CB600 dying with choke |
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Hello guys,
I have a 2000's Honda CB600 Hornet. Since the moment I bought it does the same thing:
- If I try to start it with a little bit of choke it won't start.
- If I give it a bit of choke when running, it dies.
In this bike the 'choke' is of the type that injects more fuel instead of choking the air.
In order to start the bike, I must give it a bit of throttle.
I watched some videos of other users and I'm astonished of the seamless start ups of their bikes, no way close to mine:
https://youtu.be/DqgZ9wg0-CQ?t=14
https://youtu.be/xOG1IuuqzXI?t=87
What can be the cause?
Thanks in advance. |
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
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Nobby the Bastard |
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Nobby the Bastard Harley Gaydar
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hornet_guy |
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hornet_guy Two Stroke Sniffer
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hornet_guy |
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hornet_guy Two Stroke Sniffer
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trevor saxe-coburg-gotha |
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trevor saxe-coburg-gotha World Chat Champion
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
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trevor saxe-coburg-gotha |
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trevor saxe-coburg-gotha World Chat Champion
Joined: 22 Nov 2012 Karma :
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Posted: 16:51 - 24 Jan 2021 Post subject: Re: 2000's CB600 dying with choke |
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okay, the second one wasn't even on choke - dated October. Not even been any decent frosts, probably. Looks molly coddled to fuck. It's just been run up to temperature, i'd bet. So - my question: are you comparing like with like? if your bike was in that condition, and was up to temperature, are you saying it would not start on first or second press, and would need choke? Because if so, yes, you're right. There's something bizarrely awry with it.
As for the first clip, the engine starts racing so promptly that it'd probably have started quite easily just off the throttle. So basically, same points apply. ____________________ "Life is a sexually transmitted disease and the mortality rate is one hundred percent."
Mobylette Type 50 ---> Raleigh Grifter ---> Neval Minsk 125 |
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hornet_guy |
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hornet_guy Two Stroke Sniffer
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Kawasaki Jimbo |
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Kawasaki Jimbo World Chat Champion
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
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hornet_guy |
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hornet_guy Two Stroke Sniffer
Joined: 24 Jan 2021 Karma :
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Posted: 17:31 - 24 Jan 2021 Post subject: |
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Hong Kong Phooey wrote: | Does it run OK otherwise?
How does the throttle respond, laggy, revs hang, or instant?
Starts OK when warm?
Any fuel smell out the back?
Service history?
Valves done recently?
Runs fine at large throttle opening?
It sounds fuel related so far, rich mixture. Other than being air filter clogged, it looks like carbs are going to be coming off for a clean, rebuild and adjustment. Incorrect float height, and poorly set mixture screws are areas that could cause it. |
- The throttle responds OK once it's running.
- When warm it starts OK, but always with a little bit of shake of the throttle. Choke (or better said, enrichment) never works, always dies if used, no matter cold or warm.
- If you mean, smell of fuel from the exhaust, yes, a lot. My motorcycle jacket or backpack always stinks. I thought this was normal due to the fact that it's a bike without catalytic converter from factory.
- The bike has less than 15k miles. Carburetors where tuned by previous owner in a workshop around 4000 miles ago. Air filter is OK.
- No valves serviced to my knowledge.
- I think so. No problem in my opinion running at large throttle opening.
In the following link there are several pictures of the spark plugs last time they were checked:
https://imgur.com/a/ithDGFt
To my eye, they doesn't look out of the normal, what do you think? |
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hornet_guy |
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hornet_guy Two Stroke Sniffer
Joined: 24 Jan 2021 Karma :
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Posted: 17:40 - 24 Jan 2021 Post subject: Re: 2000's CB600 dying with choke |
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trevor saxe-coburg-gotha wrote: |
okay, the second one wasn't even on choke - dated October. Not even been any decent frosts, probably. Looks molly coddled to fuck. It's just been run up to temperature, i'd bet. So - my question: are you comparing like with like? if your bike was in that condition, and was up to temperature, are you saying it would not start on first or second press, and would need choke? Because if so, yes, you're right. There's something bizarrely awry with it.
As for the first clip, the engine starts racing so promptly that it'd probably have started quite easily just off the throttle. So basically, same points apply. |
I'm comparing with my bike in the same situation which I believe is:
- After starting for a while
- but still cold, since the temp gauges are in both videos indicating that.
Setting my bike to the same conditions you'd find:
- Starts OK but with a little shake of the throttle. Otherwise, I doesn't.
- Applying choke kills it, even warm.
In the videos, they don't even touch the throttle! It starts seamless like a modern fuel injected bike!
I do think, something is not right in mine from day one. |
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hornet_guy |
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hornet_guy Two Stroke Sniffer
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stinkwheel |
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stinkwheel Bovine Proctologist
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stinkwheel Bovine Proctologist
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hornet_guy Two Stroke Sniffer
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Hong Kong Phooey |
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Hong Kong Phooey World Chat Champion
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colink98 Could Be A Chat Bot
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hornet_guy Two Stroke Sniffer
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weasley |
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weasley World Chat Champion
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hornet_guy Two Stroke Sniffer
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stinkwheel |
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stinkwheel Bovine Proctologist
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Posted: 12:40 - 25 Jan 2021 Post subject: |
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If I went downstairs to Mrs stinkwheels 2000 CBR600F right now, I would put the choke fully on and push the start button without me even getting hold of the handlebar and it would fire up within a couple of revolutions and settle to a fast idle.
I did have some trouble with the fuel pump recently, points had got stuck. Also the pre-bent, varying diameter fuel line split as I was taking it off which caused a real headache. This wouldn't cause the issue you describe though.
I find myself wondering if the needle positions are correct. ____________________ “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. |
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Old Thread Alert!
The last post was made 3 years, 64 days ago. Instead of replying here, would creating a new thread be more useful? |
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