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Discussion Starter #1
Do you guys remove your emissions vallve doo ma flicky ?? And the vaccum style fuel petcock?
 

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I'll strongly encourage you to keep the automatic vacuum operated petcock. The 'Air Injection System', you can use your own judgement, as regards time required to servicing valve tappets.
 

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Discussion Starter #3
Pdwestman is the clean air valve just a egr system? And how does that vaccuum operated petcock system work and what is the benifit of that?
 

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I'll strongly encourage you to keep the automatic vacuum operated petcock. The 'Air Injection System', you can use your own judgement, as regards time required to servicing valve tappets.
One of the things on my to do list this spring is to swap out the Vacuum Operated petcock... you think I should leave it on there? I Want to be able to drain the gas out of my tank if need be. Also, yesterday was my one year anniversary on the Forum!! hooray.
 

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I'll strongly encourage you to keep the automatic vacuum operated petcock. The 'Air Injection System', you can use your own judgement, as regards time required to servicing valve tappets.
Paul, why do you say that, recommending to keep the stock vacuum diaphragm petcock? I hate them, seriously, as they are known to fail, cause problems (erratic running, etc.), whereas the Yamaha Raptor petcock is ultra reliable. I've done the diaphragm removal/block off mod on a couple of stock petcocks, but use the Raptor petcocks instead.

I can appreciate the risk of having a float valve stick in the carb, and (with petcock left on) that fill the crankcase (with gas), spill gas all over the place, burn your house down etc. ...but, when parked indoors I think it's wise to shut petcocks off, diaphragm operated or not!

For those that think that's an unlikely scenario, bike catching on fire, one parts bike I bought had caught on fire... was all scorched/damaged right around the petcock area. (leaked).
 

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The Clean Air System is not an Exhaust Gas Recirculation system. What it does is, via a vacuum-operated pump, inject outside air into the exhaust tract in order to promote more complete combustion of waste products.

Other than making it a bit easier to work on the bike and removing a small amount of weight, taking it off of the engine will neither improve nor degrade engine performance. It will make you a bad global citizen and upset Greta horribly.
 
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Discussion Starter #8 (Edited)
Because i do not believe one iota of info on climate change its coming off. I’ll leave petcock. Thanks for help again. Heres a interesting perspective on climate. Sadly this makes more sense than Greta.


If opposed to this on here delete.
 

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Maybe you could have posted that in the off topic forum? I dunno, just a thought but hey I'm new here.

I'm just here for motorcycles...
 

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Maybe you could have posted that in the off topic forum? I dunno, just a thought but hey I'm new here.

I'm just here for motorcycles...
No one intended offense to you, cfestings, IMHO! Regarding, "motorcycles," some emission control systems apply. Excuse our, "gallows humor," if you can find forgiveness in your heart.

Wondering how Greta traveled to Davos without a, "carbon footprint." Yet, were I still a student, I'd be willing to cut class Friday for ANY cause! (Cut classes one Tuesday for Mardi Gras, without bias toward or against any krewe.)

:)

Welcome to the forum!

----------------------------------

Just remembered . . . we're not going to have ANY internal combustion engines in a few years anyway, right?

:)
 

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Because i do not believe one iota of info on climate change its coming off. I’ll leave petcock. Thanks for help again. Heres a interesting perspective on climate. Sadly this makes more sense than Greta.


If opposed to this on here delete.
Me to but thought id post. Lol I deleted. In case someone get excited.
I think GWN & T.S. finished answering your questions sufficiently, yes?

But we humans tend to get lazy about turning fuel taps OFF & there is no overflow pipe inside the USA model KLR CVK carburetor float bowls to indicate a leaky float needle before it floods the engine.
I believe that partially flooded engines & hydraulic locking of the piston could be responsible for some of the broken piston ring lands that we have all seen on the internet sites.

Now, about that link, could you re-post it in the Off-Topic Lounge? I'm curious and I probably haven't see it.
 
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pet-cock delete

One of the things on my to do list this spring is to swap out the Vacuum Operated petcock... you think I should leave it on there? I Want to be able to drain the gas out of my tank if need be. Also, yesterday was my one year anniversary on the Forum!! hooray.
You don't need to spend any money deleting the pet-cock, as all I did was take the back off and grind the aluminum piece down and put it back on and cut vac hose and plugged both ends.
I only did it because I had a problem twice because of something I did.
 

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You don't need to spend any money deleting the pet-cock, as all I did was take the back off and grind the aluminum piece down and put it back on and cut vac hose and plugged both ends.
I only did it because I had a problem twice because of something I did.
Part of the issue some people have with the stock vacuum petcock is the ethanol fuel causing the rubber diaphragm to break down and pieces of it entering the carb and causing plugged jets. Your solution does not eliminate the potential for diaphragm break up. I use the factory set up and have only had one failure in over 300k miles on 3 klrs.
 

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Removing all the Unnecessary Stuff

Do you guys remove your emissions vallve doo ma flicky ?? And the vaccum style fuel petcock?
When I bought my 2004 Gen 1, I rode it home trying to break it in casually while covering a couple hundred miles. Once home, I took ALL the Calif Crap off the machine. I also got rid of the electrical junk connected to the Sidestand. As years have gone by, the Calif crappy gas plugged up my vacuum operated Fuel Petcock and it quit delivering fuel to my carb. My Vacuum operated petcock is now in the garbage can, being replaced by the wonderful Yamaha petcock. My carb is in pieces right now waiting for my new jet kit to arrive so I can ride my KLR once again. So....... Yes, I took off every single hose that was not needed AND also all the bits and pieces relating to all those hoses. My machine runs very good.... FWIW, I mix my pump gas with aviation 100LL with about 20% AvGas to 80% premium pump gas. The AvGas acts as a stabilizer but it does contain Lead. Do I care? NOT at all.....
Weav
 

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When I bought my 2004 Gen 1, I rode it home trying to break it in casually while covering a couple hundred miles. Once home, I took ALL the Calif Crap off the machine. I also got rid of the electrical junk connected to the Sidestand. As years have gone by, the Calif crappy gas plugged up my vacuum operated Fuel Petcock and it quit delivering fuel to my carb. My Vacuum operated petcock is now in the garbage can, being replaced by the wonderful Yamaha petcock. My carb is in pieces right now waiting for my new jet kit to arrive so I can ride my KLR once again. So....... Yes, I took off every single hose that was not needed AND also all the bits and pieces relating to all those hoses. My machine runs very good.... FWIW, I mix my pump gas with aviation 100LL with about 20% AvGas to 80% premium pump gas. The AvGas acts as a stabilizer but it does contain Lead. Do I care? NOT at all.....
Weav
I was a flight instructor and used to take AVGAS home from work and put it in all my toys. The bikes loved it but, over time the led did clog up my jets. There's a gas station near me that sells Ethanol free fuel from a pump so that's all I use now. And I agree about the pet-cock. Replacing that thing this spring!
 

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I was a flight instructor and used to take AVGAS home from work and put it in all my toys. The bikes loved it but, over time the led did clog up my jets. There's a gas station near me that sells Ethanol free fuel from a pump so that's all I use now. And I agree about the pet-cock. Replacing that thing this spring!
I should have completed my remark about running 100LL in my motorcycles AND all my industrial engines...ie: Chain Saws, weed eaters, blowers, lawnmowers etc etc... I only use about a 20-25% mix ratio of the 100LL to Unleaded automotive gas. The 100LL acts as a fuel stabilizer and helps the gas last a bit longer before you have to pour into the tank of a pickup. Hahahahaha....
I know some people run 100LL full time in a variety of engines but I'm not a proponent of doing that. Lastly, here in California, we absolutely Cannot find Ethanol Free fuel anywhere. Pretty sad so many people are forced to deal with and pay for some of the worst fuel in our Nation...
 
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