Leak off WIF sensor

[J_Stone06]

So, I was changing glow plugs again and noticed my WIF sensor leaking again. I had replaced it a couple months back because it was leaking fuel from the water release at the bottom. I have the filter delete done to it as well. Is it possible the airdog is just forcing fuel out of it and I need to just put a WIF delete cap on? Anyone else ever have this problem? Thanks.

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[DAVe3283]

I've got an AirDog pushing 10+ PSI on my Suburban, and the WIF sensor doesn't leak. It's possible you got a bad WIF sensor, or a bad O-ring on it. That, or your AirDog is set really high on the pressure adjust.

I'd put a different WIF sensor in try again. Probably just bad luck and got a bum part.

 

[2004LB7]

Common problem

Is your filter a plastic one by chance?

They can also crack and leak quite easy

 

[J_Stone06]

I've got an AirDog pushing 10+ PSI on my Suburban, and the WIF sensor doesn't leak. It's possible you got a bad WIF sensor, or a bad O-ring on it. That, or your AirDog is set really high on the pressure adjust.

I'd put a different WIF sensor in try again. Probably just bad luck and got a bum part.

I double checked the o-ring and filter housing above. It is definitely leaking from the water release. It's a 165 gph, maybe the pressure is too high for the weak floater in it?? I'd hate to buy a new WIF sensor again just to have it leak immediately, when I could buy a billet delete cap and call it a day?

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[J_Stone06]

Common problem



Is your filter a plastic one by chance?



They can also crack and leak quite easy

It has a metal delete filter on. I checked it and the seals. Definitely coming from the release on the bottom

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[DAVe3283]

Since you've got the filter delete anyway, sure, might as well put the WIF delete cap on. Or just bypass the whole filter head. That's what I do on my truck. Then you don't have to worry about the primer inevitably starting to leak one day.

 

[torqued2dmax]

It has a metal delete filter on. I checked it and the seals. Definitely coming from the release on the bottom

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Kennedy has a nice plug with a drain if you want to keep the fuel head for the fuel heater and the ability to bleed air at the bleeder !

 

[J_Stone06]

Since you've got the filter delete anyway, sure, might as well put the WIF delete cap on. Or just bypass the whole filter head. That's what I do on my truck. Then you don't have to worry about the primer inevitably starting to leak one day.

I think I'll just put the delete cap on. XDP has a cheapish one that looks like it'll be good.

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[J_Stone06]

Kennedy has a nice plug with a drain if you want to keep the fuel head for the fuel heater and the ability to bleed air at the bleeder !

I'm gonna go check that out, thanks.

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[J_Stone06]

Just an update. I finally got fed up with the filter housing assembly leaking and just ran some extra airdog fuel line in a U shape and deleted the housing completely. I just don't like the idea of not being able to manually prime, but I'll run it like this for a while and will probably rebuild the housing myself. I will say, I'm fairly confident that I was leaking a decent amount of air into the fuel system for a while, because when I changed that housing out for fuel line, it fires up much easier and sounds healthier. Just my observation anyway.

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[darkness]

Just run the lift pump and bleed it at the test port. Make sure you cover it with a rag/towel because it will go all over the place.

 

[Chevy1925]

Honestly, I never had to worry about bleeding with a good lift pump on there. Only time I bled fuel was when the top end came off an engine and I’d crack a few injector lines to bleed fuel through the rail so it wasn’t air locked

 

[J_Stone06]

Thanks yall for the ideas. I tend to forget about the test port being an option.

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