How much PSI???

[Sully2]

Got a pressure sprayer here and a coach that has some REALLY filthy spots. I know that HI is WAAAAYYYY too much pressure to use but what psi settings can / would a guy use.

Bad locations are the roof roll over where it blends into sidewalls. Got me stumped??

[topflite51]

Use extreme caution and a wide spray angle. I have used high pressure washer to remove paint, worked almost as good as a sand blaster.

[Sully2]

bshpilot wrote:
Start w/ the least - you can always (slowly) turn it up....
stay away from any seams, joints, seals or other objects where water could enter.

Affirmative.. Thanks

[Sully2]

mtrumpet wrote:
I use mine (1750 psi power washer) on mine all the time. Cleans much better then just washing than a garden hose.

HOWEVER, on mine, I don't have a pressure setting. My pressure is determined by which (removable) nozzle (amount of fan out) that I use in the end of the wand. I use the widest angle fan nozzle (considered the lowest pressure). I seldom get the wand closer than about 18" from the surface. You still have to always be very careful of where you point it at all times.

The different nozzles for mine only control the pattern of the spray...I DO have a pressure adjustment just like on my air compressor...but no gauge to know what its going to do. As posted here I think I'll start out backed away from the rig and see what she does for me. Thanks for the input

[Sully2]

wa8yxm wrote:

tderonne wrote:
You'll have to have the pressure washer 4 corner weighed and consult the manufacture's pressure charts.....


...couldn't resist, sorry.

Thank you... Needed a laugh.

Best advice to the O/P is to use whatever pressure you like and adjust your DISTANCE.. Those high pressure jobs will dig a ditch right through concrete at 1". but at 6' they may not even dampen you.

The pressure drops very fast as you back off the target.

Gee....Id never suspected that!:S

[wa8yxm]

tderonne wrote:
You'll have to have the pressure washer 4 corner weighed and consult the manufacture's pressure charts.....


...couldn't resist, sorry.

Thank you... Needed a laugh.

Best advice to the O/P is to use whatever pressure you like and adjust your DISTANCE.. Those high pressure jobs will dig a ditch right through concrete at 1". but at 6' they may not even dampen you.

The pressure drops very fast as you back off the target.

[ChooChooMan74]

Use a fan spray and not a pinpoint spray.

[mtrumpet]

Sully2 wrote:
Got a pressure sprayer here and a coach that has some REALLY filthy spots. I know that HI is WAAAAYYYY too much pressure to use but what psi settings can / would a guy use.

Bad locations are the roof roll over where it blends into sidewalls. Got me stumped??

I know the areas that you're referring to. Unfortunately, the only way that I know of to get rid of those types of marks are to start with some Black Streak Remover and elbow grease. Then, rinse with the pressure washer to get all of the grime out of the pores.

[mtrumpet]

I use mine (1750 psi power washer) on mine all the time. Cleans much better then just washing than a garden hose.

HOWEVER, on mine, I don't have a pressure setting. My pressure is determined by which (removable) nozzle (amount of fan out) that I use in the end of the wand. I use the widest angle fan nozzle (considered the lowest pressure). I seldom get the wand closer than about 18" from the surface. You still have to always be very careful of where you point it at all times.

[tderonne]

You'll have to have the pressure washer 4 corner weighed and consult the manufacture's pressure charts.....


...couldn't resist, sorry.

[Effy]

I've used mine on the under carriage, windshield and mirrors. Never on the sidewalls or roof. I just felt that there was too much pressure that could create a gap in the seams even if you try to miss them. I was always afraid even at 1500 psi is way too much pressure and beyond what any reasonable expectation would be on caulk. I would use a cleaner and elbow grease.

[bshpilot]

Start w/ the least - you can always (slowly) turn it up....
stay away from any seams, joints, seals or other objects where water could enter.

[Blaster_Man]

That's a tough call. I have a power washer but don't use it on the MH...don't want to take a chance on doing some damage or driving some water where it should not be.