Originally Posted by howard6212
My engine keeps cutting out. I think its being starved of fuel. Filter in the external tank seems OK. But the fuel gauge is leaking when I shake the tank. Therefore letting in air. Am using new fuel so no contamination. Engine is a Mariner 30hp outboard.
You'd be amazed at how much pressure develops in a fuel tank when it's all sealed up. I've had one of these 5l plastic fuel containers bulging hugely when either in the boot of the car or in the garage (hence why they have max fill lines!). Shaking the tank also increases the pressure in the tank so it will likely be fuel vapour coming out the tank rather than air going in.
One of my old Suzuki tanks leaked badly out of the guage which was in the same place as the connector and I think it was the joint between the plastic viewing window and the tank.
A new hulk 30l tank can be picked up for £20 from various placed and you can sometimes even remove the old tank connector and screw it onto the new elbow. If the the guage is leaking, it may be good investment.