2007Yamaha F250 fuel leak

[Fire33]

Good afternoon,
Has anyone seen a fuel leak intermittently on the engine itself that is coming from the starboard side behind plastic cover on the engine? It only leaks after I run the boat and then lift the engine and it leaks out of front of the cooling at the latch. Motor runs great no issues.

 

[DennisG01]

Good afternoon,
Has anyone seen a fuel leak intermittently on the engine itself that is coming from the starboard side behind plastic cover on the engine? It only leaks after I run the boat and then lift the engine and it leaks out of front of the cooling at the latch. Motor runs great no issues.

Can you re-read what you wrote and correct the mistyped words? It's not clear what you're saying. Also, add some more description as to where it's leaking - or maybe take some pictures.

 

[Coastboater]

Assuming it’s a recent engine, there’s a fuel filter at the lower front of the engine. It has an o-ring seal.
Another guess is VST tank, but it’s buried a bit deeper.
Check fuel line connections.
If its an older motor perhaps the fuel lines themselves.

 

[Fire33]

Assuming it’s a recent engine, there’s a fuel filter at the lower front of the engine. It has an o-ring seal.
Another guess is VST tank, but it’s buried a bit deeper.
Check fuel line connections.
If its an older motor perhaps the fuel lines themselves.

I replaced the plastic fuel filter assembly and checked all hose and today I saw fuel dripping down from behind black plastic cover on starboard side of the motor. It only leaks after I trim the motor up out of the water and that's when I see fuel running down to the front latch area. Injector maybe? The boat runs great and no lights on the gauges. Mystery....

 

[wspitler]

Your VST tank and LP pump are both on the port side of the engine behind the intake plenum , along with the LP filter.

 

[seasick]

I would guess that the motor is not leaking when tilted. . Rather it is leaking while running and the gas is accumulating in the lower cowling. When you tilt the motor, the puddle of gas flows to a different are that has openings to the outside.
This could be a fairly dangerous condition so if you don't know waht to look for, you should have a qualified mechanic take a look.