Last year I had a fuel leak from my NT700 in mid winter when the bike was stored. There was a puddle of about 3 gallons of gas under the NT one cold morning. It had been stored with a full tank for 2 months without any leaking. I thought the leak was coming from the gasket between the tank and fuel pump. I replaced the rubber gasket and carefully torqued all the screws. And the leak stopped. Until now.
I returned home from a trip and over the cold weekend the leak came back. So now I know the leak is associated with cold weather. The source of the leak is under the fuel tank (which of course you can't see unless the tank is removed or at leasted tilted up). It looks like only two possibilities. 1. the rubber gasket again or 2. the hose connection with the fuel pump. Last time I saw residue above the hose connection so I assumed it was the gasket. It is difficult to diagnose because I remove most of the gas from the tank before bringing it into my heated shop to work on.
Unless some of you wise folks on here have better suggestions, I guess I'll remove the tank, refill it with gas, and leave it outside on a cold night and see if I can find the leak that way. I think it has to be colder that 20 below to make it leak. It has never leaked in warm weather. It doesn't leak when the fuel pump is running so it is a gravity driven leak.
Any suggestions?
I returned home from a trip and over the cold weekend the leak came back. So now I know the leak is associated with cold weather. The source of the leak is under the fuel tank (which of course you can't see unless the tank is removed or at leasted tilted up). It looks like only two possibilities. 1. the rubber gasket again or 2. the hose connection with the fuel pump. Last time I saw residue above the hose connection so I assumed it was the gasket. It is difficult to diagnose because I remove most of the gas from the tank before bringing it into my heated shop to work on.
Unless some of you wise folks on here have better suggestions, I guess I'll remove the tank, refill it with gas, and leave it outside on a cold night and see if I can find the leak that way. I think it has to be colder that 20 below to make it leak. It has never leaked in warm weather. It doesn't leak when the fuel pump is running so it is a gravity driven leak.
Any suggestions?