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Stelvio, fuel congestion

GoodKnight

Just got it firing!
Joined
May 27, 2014
Messages
13
Location
Denmark
Hi again.

I got a very strange problem with the fuel supply.

When the fuel level reaches nearly 1/3 the engine starts to congest, and finally shuts down. Turning the key off and on will make it possible to restart, and run for a mile or so - then same happens. Refueling solves it ! And I can run the bike at full power, like going at 120mph.

I suspect an air leak in the tubing in the tank, or something.....


/Claus
 
Ok, so you are having a fuel starvation problem. What year is the bike?
Also are you doing the same mileage as always? Not trusting the gauge I would want to be sure that it isn't reading improperly.
Next If that is the same as always & the gauge is correct, I would be removing the fuel pump from the tank & be inspecting all the hoses & clamps on it & while it is out be replacing the fuel filter.
That is where I would begin.
 
Ok, so you are having a fuel starvation problem. What year is the bike?
Also are you doing the same mileage as always? Not trusting the gauge I would want to be sure that it isn't reading improperly.
Next If that is the same as always & the gauge is correct, I would be removing the fuel pump from the tank & be inspecting all the hoses & clamps on it & while it is out be replacing the fuel filter.
That is where I would begin.
Gauge is not the issue, but I'm afraid you're right about the tubes and hoses.

C/
 
Ok, so you are having a fuel starvation problem. What year is the bike?
Also are you doing the same mileage as always? Not trusting the gauge I would want to be sure that it isn't reading improperly.
Next If that is the same as always & the gauge is correct, I would be removing the fuel pump from the tank & be inspecting all the hoses & clamps on it & while it is out be replacing the fuel filter.
That is where I would begin.
btw - it's a 2012 model
 
Update - it has gone from bad to worse, now it happens even with a full tank. I had a nightmare getting the last 50 miles home this afternoon.

C/
 
The filter you will have fitted in the tank is the Mahle KL150, what you need is the all metal Mahle KL145 or equivalent.
I opened the tank and found an all metal filter there already.
Some local guy told me that it could be a problem with the pump micro-relay, I just can't find it.
 
I would be inclined to still replace the filter, check to make sure no hose is cracked, & all the wires have good contacts. Without actually looking at it in hand, that's the best I can offer. Anyone else feel to chime in.
 
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