Anyway 2 days later i had a look at the tank and saw a liquid type substance on the back rubbed with my fingers had a sniff and it was fuel... before i brought it in i got my exhaust fixed while it was up on the hoist
so it was leaking fuel, but before you decide to fix it, you thought youd let some poor exhaust guy climb under it on a hoist, and fix (and i presume weld!) your exhaust...