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Undercover Sportbiker
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Discussion Starter #1
I've read and reread tons of posts on the emissions crap that are on CA bikes, and I'm still stumped. Does anyone from outside of CA have the rectangular box and round (looks like a fuel filter almost) can behind the coolant reservoir?

After having done the ear shave, I find myself left with a bunch of hoses that go nowhere..... There's also a mystery hose that is connected to the underside of the fuel tank which has never been hooked to anything but I'm guessing it should be?

Thanks!
 

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Old Truck Junkie
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4,133 Posts
You are probably asking about the air valve for the hoses that go to the sides of the head. Since you are in Cal. you best marble and plug the hose that goes to the rear carb.

The mystery hose in more than likely the over-flow from the fuel tank.
 

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Undercover Sportbiker
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Discussion Starter #4
Yeah - I didn't think to take a pic before I hooked the tank back up. And I had a thought - maybe the hose isn't really coming out of the tank. Something I may have mentioned before is that the vacuum equalization hose from the center of the carbs that was supposed to go to the right ear was and is missing. I have the two oses oming off the carbs but they end at the T. Nothing is hooked up after that. My thinking is that maybe the hose that should be there somehow got pulled out of the ear and then by some quirk got stuck to the bottom of the tank, causing it to pull off of the T when I pulled the tank the first time back in OCT when I first got the bike. I know, I know, it's a stretch.... I may reach under there and give her a not so gentle tug to see if it's just stuck to the tank as opposed to actually connected to it. After studying the schematics for the evap system, it looks like I can pull the canister (rectangle) and the seperator (round) and just reroute the 2 lines from the back of the tank down to the bottom of the bike. Agree?
 

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Premium Member
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1,647 Posts
When I lived in Ca, I was told that any modifications to the EPA systems on an engine would result in a heavy fine when emissions inspection time came. They even checked for everything under the hood when I got the inspections done! How are you getting around that or was I just told a big lie?
 

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Old Truck Junkie
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When I lived in Ca, I was told that any modifications to the EPA systems on an engine would result in a heavy fine when emissions inspection time came. They even checked for everything under the hood when I got the inspections done! How are you getting around that or was I just told a big lie?
I believe you may be right. When I was in San Antonio I had to reinstall my factory air filter before I could get my safety inspection sticker. The inspector said "when you get home you can take it back off."
This was for my truck not the bike. Here in Roby every thing goes.
 

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Undercover Sportbiker
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Discussion Starter #7
Look out for the green police!

I am not aware of any requirement for emissions testing for MCs at the moment in CA. Not to say that it won't happen eventually, but I don't think that it's required yet.
 

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Undercover Sportbiker
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Discussion Starter #8
I just looked at the California Air Resources Board (CARB) web site and they claim that MCs pollute 15 times more per mile than the average new car or light truck. BTW - hopefully everyone is aware that CARB is changing its name to ARB. They intend to bring the same kind of shenanigans to the national level since they've pretty well beat the crap out of CA bike owners.
 

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I just looked at the California Air Resources Board (CARB) web site and they claim that MCs pollute 15 times more per mile than the average new car or light truck.
I'm not an environmental technician but how is this possible? My bike gets twice the MPG of my car, and three times my brother's SUV.
 

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Premium Member
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MPG and pollutants = different things. I'm guessing that in general the emissions standards on motos are much lower than for cars (altho' maybe not in CA). But as someone noted earlier, the fines - at least in MD - for messing around with the emissions controls are supposedly astronomical. Which makes me think that the "standard" junk coming out of our tailpipes is already bad enough (i.e., the fines are intended to keep it from being any worse than it is).
 

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85 VN 700
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1,033 Posts
I have a feeling that "motorcycles" includes 2 stroke bikes/scooters. It always gets me when a base statement like "15 times the polutants" is made without an easy to find source referenced.

I don't have an issue with the claim that the bikes put out the same amount or more pollutants than a light truck... but I have a hard time believing the 15 times bit... unless of course they are comparing a new light truck to an old TWO CYCLE motorcycle/ scooter.

Someone wanna track down a SOURCE for the claim? (yes I found the claim on the website... just didn't have the time/ energy to find the source of same claim).
 

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Undercover Sportbiker
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Discussion Starter #12
I spent some serious time on their site and found no references to the source for the info. Remeber - these are the people that fined Jesse James like 500k for not having his bikes "certified" by CARB so they pulled the registration on all of them. He paid the fine and the reg was reinstated on all of them, without a single bike being inspected to see if they actully met the "standards." I rank this right up there with a statement I read a while back from some lady who is the head of an organization who said that motorcycle safety courses have no role in reducing the likelihood of accidents. Oddly enough, the speech was about mandatory helmet laws. If I find the post (on another board) I'll repost here.
 

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Look out for the green police!

I am not aware of any requirement for emissions testing for MCs at the moment in CA. Not to say that it won't happen eventually, but I don't think that it's required yet.

Aj is correct in CA there are not emmisions testing required for Motorcycles. Probably due to the cost of the testing equipment, coding of the software for the machines, and finaly hiring of qualified motorcycle mechanics for every smog stop.

Dont see that happening any time soon

But still 2 marbles are alot easer to pull than put back the whole emissions system.

:motorcycl
 

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Yeah - I didn't think to take a pic before I hooked the tank back up. And I had a thought - maybe the hose isn't really coming out of the tank. Something I may have mentioned before is that the vacuum equalization hose from the center of the carbs that was supposed to go to the right ear was and is missing. I have the two oses oming off the carbs but they end at the T. Nothing is hooked up after that. My thinking is that maybe the hose that should be there somehow got pulled out of the ear and then by some quirk got stuck to the bottom of the tank, causing it to pull off of the T when I pulled the tank the first time back in OCT when I first got the bike.
There's your "mystery hose", and it ain't a "quirk" as such. That hose hooked to the bottom of the tank--lemme guess...it's on the nipple on the cover over the fuel sending unit.

Some (most, apparently) 750s had the third leg on the carb vent tee run to the right ear; others had it hooked to the cover over the fuel sending unit. Either works just fine.

Jim
 

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Undercover Sportbiker
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Discussion Starter #15
Thanks Jim! I actually had a separate post dedicated to this mystery, inlcuding a pic of the bottom of the tank. KM made a good point that words only go so far and a pic would help. I should check the right ear to see if it has the hole... Glad to know my bike is special!
 

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Yeah, I just found and read that post. _All_ the "ears" have two slotted holes, btw, directly across from each other towards the rear; the housings are interchangeable. It's positioning of the mounting brackets that determines right or left, which is why there are unused positioning nibs near the brackets.

Jim
 
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