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Coolant Leak

gabbydad said:
Here's my saga.
Leak developed jsut after fist service. Clearly the bottom hose clamp. I replaced with a worm type all good...or so I thought. Rode about 10 miles to a buddy's house and got more fluid in that same slot as everyone else. For kicks, I checked the water pump bolts that I could access and 2 of them gave me a 1/4 turn or so. I rode for 2 weeks about 500 miles with everything dry.

Then the leak came back. New clamp fine. Other clamps holding. Thinking water pump gasket again; I cleaned the fluid up and I brought her to the dealer. It's a 50 mile ride and no further leak! Left the bike with them and got the call Saturday that the tech ran the bike several times and could not find a leak. It's staying dry again!

I'm picking her up tomorrow and will continue to monitor closely.
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Try the radiator cap.

Has Anyone tried these?
Not sure about the quality.
Says 1.1 bar is this value ok?

IMG_3299.webpIMG_3300.webp
 
Vagrant said:
I believe he means there is too much pressure on the system.
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Exactly thanks.

I believe the area visible as red gum material in the pictures get stuck or sticky or something and it does not release pressure to the reservoir tank, generating pressure on all hoses. Also, rotating the cap before every ride might be helpful. But beware coolant will fall if you open it since the reservoir is higher.

In any case it's a marvelous bike, just minor bugs that will be sorted out.

Now considering upgrading monoshock, with high and low damping, but mountings dimensions holes and bushings seems to be specific of V100, so researching options.
 
My update.
Dealer determined the leak stems from the water pump housing. New gaskets will be ordered and potentially new pump housing as well. In addition, a small oil leak deveopled and I was told it was due to a couple of bolts needing to be retorked.
Having bought the bike in early September, it's a bit of a bummer to lose it for so many weeks.
 
gabbydad said:
My update.
Dealer determined the leak stems from the water pump housing. New gaskets will be ordered and potentially new pump housing as well. In addition, a small oil leak deveopled and I was told it was due to a couple of bolts needing to be retorked.
Having bought the bike in early September, it's a bit of a bummer to lose it for so many weeks.
Click to expand...
Update on my update. The bike was moved to a sister dealer with a deeper pool of tech experience. Svc mgr called to tell me that actually it’s an upper hose that is leaking. Piaggio has approved/directed them to swap all the clamps for the worm type. When I asked about the water pump gasket he responded that they have not noted any leaking there. He did assure me that they’re not releasing my bike till they’re 100% confident that this has been resolved.
 
I had my bike in for its first annual service and the day before noted the dreaded pink fluid appearing once more. Apparently it was a leak from the thermostat / waterpum housing between the cylinders. Piaggeo have accepted it as a warranty job but I've had to wait for over a week for the spare to be delivered. Not too much of an issue given the temperature is around 2 C or less at the moment. Dealer supplied a loan bike but it hasn't got heated grips and nowhere to plug in my heated gear so not using much!
 
Sadly third lot of leaks. Now coming from this pipe.though once engine warmed up the hose expands and leak stops 🤪
Luckily had no leaks on my last European trip of 3000 miles to Budapest.
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IMG_2757.webp
 
gabbydad said:
Update on my update. The bike was moved to a sister dealer with a deeper pool of tech experience. Svc mgr called to tell me that actually it’s an upper hose that is leaking. Piaggio has approved/directed them to swap all the clamps for the worm type. When I asked about the water pump gasket he responded that they have not noted any leaking there. He did assure me that they’re not releasing my bike till they’re 100% confident that this has been resolved.
Click to expand...
Update on my updated update!
So I got the bike back and did a 200 mile ride only to find the smell of coolant and the steam coming out fro myet another location! Dealer came and collected my bike and the diagnosis is now we need a new radiator. Needless to say my frustration level has grown substantially. It's the winter here so this is an easier pill to swallow, but I do ride eyar round.
 
gabbydad said:
Update on my updated update!
So I got the bike back and did a 200 mile ride only to find the smell of coolant and the steam coming out fro myet another location! Dealer came and collected my bike and the diagnosis is now we need a new radiator. Needless to say my frustration level has grown substantially. It's the winter here so this is an easier pill to swallow, but I do ride eyar round.
Click to expand...
I've only had small leaks. Head gasket in the summer and water pump this week.
 
viewpoint said:
Sadly third lot of leaks. Now coming from this pipe.though once engine warmed up the hose expands and leak stops 🤪
Luckily had no leaks on my last European trip of 3000 miles to Budapest.
View attachment 39075
View attachment 39076
Click to expand...
Check out my post #56, easy fix and resolved my issue. I never did get it done under warranty, its fine so I'm leaving it.
 
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