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 2016 GRiSO 1200 se breather issue

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Chris W
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PostSubject: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Mon Jan 11, 2021 6:38 am

there is fuel dripping from the vent pipe under bike in recent weeks.
I don't have an issue with pressure in the tank and I confirmed the hose by spraying carburetor cleaner through the filler neck overflow tube and it came out the same one the fuel is dripping.

I usually park my bike with a full tank in chocks so it is upright. first thought was I am overfilling the tank, but I have been doing this since I owned it and never had these issues before.

after doing some research, I realized that I am no longer hearing the odd noises coming from the little blue and orange relief valve. I want to check if it is stuck in the open position. unfortunately, I had to order the special tool to remove and reinstall the hose clamps so I have a little more time to research.
Has anyone else had this issue?
Does anyone know what the opening pressure is for the relief valve?

thanks!
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JohnA
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Mon Jan 11, 2021 9:40 am

Hi Chris,
I never had that issue but my 2014 made all kinds of noises after a ride, most times. More than a year ago, at the advice of some on this site and a colleague, I removed the charcoal canister (canisterectomy) and all the associated hoses and the blue and orange valve. I put a hose barb to connect the two ends of the hose. No or noises or issues and everything is great. I’d get ride of that thing if it was me.
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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Tue Jan 12, 2021 3:33 am

that's my plan "B". I will hopefully confirm the relief valve is the culprit and nothing else going on with the vent system.
My first plan will be to replace the valve. if it happens again, Plan "B" will be put into action.

thanks John!
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Brent S
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Wed Jan 13, 2021 1:58 pm

Mine does that from time to time (2014 model). Being a non-US spec bike, mine doesn't have the charcoal cannister thing, but after a ride, particularly in hot weather, I may get 1-2 drops of fuel from the vent pipe. This can occur at the end of a ride, even if the tank is mostly empty, so I'm pretty sure its not an over-filling issue. That said, its never more than 1 or 2 drops.

My guess is that its just vaporisation from the warm fuel that then condenses in the vent line, and ultimately finds its way out. I was a little alarmed at first, but doesn't really worry me now, as its such a small amount.

As a related issue, I can get quite a strong fuel smell from around the filler cap when the bike is sitting. Almost like the cap seal isn't doing its job. I've never seen evidence of fuel leaking from around the cap though, even on a full tank, so again, it's something I've learned to live with.

Brent.
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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Wed Jan 13, 2021 3:38 pm

My replacement hose clamps and pliers came in today courtesy of Amazon so I’ll extract the valve and give it a gentle pressure test to see how it responds.
My original drip was quite substantial- once I got a container under it, I captured a good ounce of fuel overnight. I have since ran a tank + of gas through it and parked it with about 1/4-1/3 full with no noticeable drips in the past couple of days.
I’ll post back after my test
Thanks
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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Mon Feb 08, 2021 3:12 pm

replaced the blue and orange releif valve and ultimately decide to do a cannisterectemy.
simple enough procedure, but as i was inspecting the hoses, I noticed the drain hose from the airbox was kinked and routed all around its asshole to get to its elbow.
so I disconnected the airbox from the bike and raised it up slightly so I could tug on the hose underneath the bike with the intent to straighten it out.
when i pulled on the tube, it came completely out and landed on the floor. Oddly enough,  the kinked hose attached to the airbox was still there!

this is what pulled out
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I see no signs of it being attached anywhere  - no hose clamp mark or barb fitting marks inside the hose.
after further inspection I found the end of the airbox breather hose up high inside the bike and I couldn't get it to straighten out. so I removed it.

this is the airbox hose I was trying straighten out
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after looking through the parts diagrams, I have accounted for (what I think) are all of the drain/ breather hoses:
battery
fuel tank - now 2 total due to cannisterectomy
air box drain

I can't figure out where this other hose went - did the factory just stuff a spare on up there? which would be big help if they did because I could use it to replace the kinked airbox tube  Wink

any advice would be greatly appreciated
thanks,
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JohnA
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Wed Feb 10, 2021 3:48 am

Chris,
If your bike is like mine, there should be 2 of those clear hoses coming out of the bottom of your bike with plugs in them. One has a clamp and is attached near the throttle bodies. You can see it if you look closely underneath your throttle bodies from the exhaust side of your bike. It goes in under the battery box. The other attaches to the air box and connects just above your shock. You can see the connection if you squat down and look under the plastic housing from the exhaust side. This one had no clamp on mine and pulls off easily and would show no signs of being clamped. I can send pictures later if you need.
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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Wed Feb 10, 2021 5:04 am

thanks John!
since the airbox hose was buried in the frame, I was starting to think they stuck the other one in to look like the airbox hose was in place.
if you have a picture, that would be a big help.
I used a heat gun to straighten the kinked hose last night and put that back on. The mystery hose should get me back on track to putting the bike back together.

I do have a question about the rubber boots that connect the airbox to the throttle bodies: should they be glued into the airbox with silicone or are they just pushed into place?
I had pulled the airbox and boot assembly off the throttle bodies so I could straighten  the hoses out.  When I was connecting it back to the throttle bodies, I noticed a thread of silicone starting to work loose from between the boot and the airbox - wondering if I need to completely disassemble them from the box and glue them back in.
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JohnA
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Wed Feb 10, 2021 6:39 am

Chris,
If you look closely at where this hose is going, you will see the nipple the hose attaches to. It just slides on with little effort.
Regarding your question about silicone on the throttle body housing; I can't imagine that is necessary or was used but I've never taken mine apart so we'll need one of the experts to respond here.
If no one does (which I doubt) you could send a PM to Dr Roper.



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kiwi dave
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Wed Feb 10, 2021 12:07 pm

JohnA wrote:
Chris,
The other attaches to the air box and connects just above your shock. You can see the connection if you squat down and look under the plastic housing from the exhaust side. This one had no clamp on mine and pulls off easily and would show no signs of being clamped.

Surely, it too should have a plug and clamp, otherwise the motor will be fed unfiltered air!  It won't last long in these circumstances.  tongue
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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Wed Feb 10, 2021 3:49 pm

Arrow albino Well I was all optimistic when you mentioned there is a  clear hose up at your throttle bodies, but i am not seeing anywhere for it to connect.
I have found a breather hose for the transmission that was tucked up between the frame and the gas tank. But this appears to not have any mating connectors for it to attach to another hose.

A little unsure about what to do at this point - my concern is the mystery tube is plugged at 1 end which means whatever it is supposed to connect to is not meant to be open to atmosphere. So I don’t want to disregard it Shocked
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JohnA
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Thu Feb 11, 2021 1:54 am

Kiwi Dave,
The one in the picture had no clamp on it but has a plug at the bottom. It’s been that way on my bike for 7 years and hasn’t come off. I guess others can tell us if there’s is the same.

Chris, I’ll see if I can’t take a picture of the place for the hose you fixed to attach. The one that did have a clamp on it.
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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Thu Feb 11, 2021 3:53 am

John - the hose you are showing in your picture that is routed by the shock is/was not routed that way on my bike. I have the bleed line for the clutch routed through the notched opening in that location. I think that may be the drain for your airbox.

after straightening mine and reconnecting it to the airbox, it now runs nice and straight out and down between the transmission and swingarm

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and sorry about the over use of emoticons previously - I fat fingered them while trying to post with my cell phone



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JohnA
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Thu Feb 11, 2021 7:02 am

I don't know if this helps but if you look back in there, you'll see the yellow hose back in there. This was obviously taken from the exhaust side back in there beyond the starter.

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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Thu Feb 11, 2021 7:26 am

good shot - that's the one I knew about and have that one attached. my last phot shows that same hose connected on my bike. that's a hard place to hold a light, hold the phone and take the picture!
any idea where the other clear hose connects?
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JohnA
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Thu Feb 11, 2021 8:09 am

My other connects at the place I showed in the previous picture just above the shock
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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Fri Feb 12, 2021 5:17 am

I'll have some time this afternoon and will give it another go - maybe I'll get lucky!
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JohnA
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Fri Feb 12, 2021 6:10 am

Last try, here she is...............

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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Fri Feb 12, 2021 6:55 am

BINGO - that's what I needed to see!!

that port doesn't show up on any of the factory schematics and I never removed my filter to look into that compartment of the airbox. my clutch bleed line is running through the same notch in the fender pan which is blocking my view, so i couldn't see the port. I'll confirm when I get home this afternoon and post back

thanks!
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JohnA
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Fri Feb 12, 2021 7:21 am

Chris,
I looked at the parts manual with all the drawings and was going to point you there until I noticed it didn't show up, like you said.
Good luck.
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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Fri Feb 12, 2021 3:23 pm

John - the mystery hose now has a home.  cheers
thanks for hanging in there.
sometimes I have to be spoon fed!!

while I have everything opened up, I am cleaning out the airbox, cleaning the throttle bodies and lubing up the throttle cables.
will reassemble the pile of parts in my shed &  re-balance the tb's tomorrow

to think it went from a cannisterectomy to a can of worms....

Cheers!
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Pete Roper
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Fri Feb 12, 2021 6:43 pm

Don't lube the cables! Modern cables have a nylon liner. If you use any petrochemical lubricant the liner will swell and grab the inner cable.

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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Sat Feb 13, 2021 5:32 am

well crap
learning curves suck!

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Bill Hagan
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Sat Feb 13, 2021 8:12 am



Pete Roper wrote:
Don't lube the cables! Modern cables have a nylon liner. If you use any petrochemical lubricant the liner will swell and grab the inner cable.

Chris W wrote:
well crap
learning curves suck!

I hadn't gotten around to doing that yet, and now won't.

At last ... lethargy and sloth pay off. cheers

Bill

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Chris W
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PostSubject: Re: 2016 GRiSO 1200 se breather issue   2016 GRiSO 1200 se breather issue Icon_minitime1Sun Feb 14, 2021 7:46 am

Hey Bill,
I have a VTX that I need to annually lube the cables and didn't think twice about doing the same on the GRiSO. This is my first Guzzi and I'm trying to get up to speed with the ins and outs of ownership with no local support or dealerships.

As an experiment, I should be able to tell you how long it will take for the cable to degrade should you (or someone) make the same mistake. Yesterday after 24 hrs of saturation, the cables were still free and the throttle was snapping back nicely.
FYI, the product I used was Cable Life lubricant
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