Foam Gun not what it was using new pressure washer

[K5/TBSS]

Hello all! Long time member, seldom poster! But I do have a question:

 

I’ve been using the foam cannon with a 1800 psi pressure washer for the last 5+ years with tremendous results. Very very thick foam, great for little to no swirls. Recently though, I bought a new power washer, that is 3100 psi, and the amount of foam produced has gone down drastically. Is this from the additional pressure? Is there anything I can do to fix it? I’ve got the “knob” on the foamer turned up all the way, with no improvements. I’ve tried using a heavier soap mixture, also with no noticeable improvements... Attached are pics showing the old foam results compared to the latest. 

 

If you have any tips, please let me know! Thanks!

[PacificNWBuckeye]

Don't have the pressure washer/foam cannon set up, but if the new pressure washer was the change, then I would guess it is the reason for the difference in foam. If you still have the 1800PSI unit hook that one up and do a direct test, maybe the 3100PSI is too much pressure.

[TheWolf]

Which Foam Cannon are you using?  The MTM?  It sounds like the one you had been using has a smaller orifice that is used with electric pressure washers and you may need a bigger orifice for the gas pressure washer.

 

Check out this post for an explanation: