1986 340 EC Fuel Sending Units

[J-Rides]

Hey everyone, I need to replace my fuel sending units on the boat in the title. Does anyone have one they would recommend? Are there different styles that work better than others? I've done this project on a different boat before but wasn't totally happy with the product I used so I'd love some input before I do this one. Thanks!

 

[Lazy Daze]

The Moeller swing arm type are good - but you could upgrade to the reed style if you wanted to. They all fail eventually, though.

 

[hottoddie]

The fuel additive Tecron is known to "wake up" old failing sending units. You'd need quite a bit of it in a boat fuel tank.

 

[J-Rides]

The Moeller swing arm type are good - but you could upgrade to the reed style if you wanted to. They all fail eventually, though.

Hey thanks for the suggestion. Do you happen to know, would a 4"-27" work for my boat? Boat's in the marina so I can't measure at the moment. I'm thinking that size would work but idk for sure.

 

[J-Rides]

The fuel additive Tecron is known to "wake up" old failing sending units. You'd need quite a bit of it in a boat fuel tank.

That may work... I think I'd prefer to just start over with new units. I wonder about Berryman B12... I've used that but never noticed it "waking up" anything though, besides the engine.

 

[Lazy Daze]

Hey thanks for the suggestion. Do you happen to know, would a 4"-27" work for my boat? Boat's in the marina so I can't measure at the moment. I'm thinking that size would work but idk for sure.

I honestly don't know. Unless it's a tank from the same boat model that I've done in the past and have notes... I never guess. It's easy enough to pull it out and measure tank depth or just take the sender to the store and match it up. Senders are very common items to be in stock at a local parts store.