[A Foster]

I have a honda gx390 pressure washer.

There are 2 oil caps as in photo, and oil always gradually spits out, especially from the circled one.

I was told that it would settle down, but it hasn't.

It's a complete nuisance as I have to constantly keep watching it and wiping, otherwise it spits oil
onto the surfaces i'm cleaning.

Does anyone know of a cure or the solution to this problem?

Thanks.

[A Foster]

[Matt Gibson]

Hi mat,

That looks like the oil fill for the gearbox for the pump. how much oil is in it? Might be over full.

[BDCS]

Firstly is the oil in the pump emulsified - becoming milky ? Does the pump loose oil ?
The oil in the gearbox sounds like its foaming and as such increasing its volume. What oil does it have in it ? You need a low foaming oil or the oil is too thick. I use the same oil as I use in my enduro bike in both the pump and gearbox - Silkolene gear comp.

[mike roberts]

One of the Honda lumps I had always seeped oil via gearbox cap (the one you circled) never found out why - didnt effect the performance ... but I am talking just a small amount always fell onto frame so not a prob...

As for solution ....dont turn it on   

[Blast Away]

Firstly is the oil in the pump emulsified - becoming milky ? Does the pump loose oil ?
The oil in the gearbox sounds like its foaming and as such increasing its volume. What oil does it have in it ? You need a low foaming oil or the oil is too thick. I use the same oil as I use in my enduro bike in both the pump and gearbox - Silkolene gear comp.

Exactly what one of our has been doing, hadn't put correct oil in. Thought I'd over filled it at first but was level across the dot.

[A Foster]

Thanks for responses.

Not sure which oil is in it. It was already filled from new.

I'll probably give it an oil change and new filter / plug next week, and try some silkolene comp gear.

Thanks.