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PreSoak streaking

Roz

Roz

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Greg Pack said:
You need to familiarize yourself with your injector setup. I use hydraflex injectors on two autos and they want 180-200 psi inlet pressure going into the injector. Some people love injection systems and I like them but there are variables that affect the concentration of solution which aren't readily apparent to a casual observer. You need to titrate your chemicals occasionally too because you can't measure the cleaning strength of presoaks reliably any other way.
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titration is important as you cannot rely upon the chart tip colors to accurately tell you the strength.
 
Roz

Roz

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Touch free presoaks require good coverage to achieve necessary strength so you cannot rush the trolley too fast. We have been experimenting with various speeds on our razor and see the difference if we run it too fast. We also have increased our dwell time to 20 sec from 15 which as gotten rid of eyebrows consistently. Our dwell time is divided evenly between lost LP1 and LP2. Seems to deliver a better result.
 
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soonermajic

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AnalyticWash said:
You will not reach the flow rate required for a Petit to properly disperse PS onto the car with good coverage. They use such a large nozzle you need higher pressure and more flow. If you wanted to run lower pressure (to an extent) you could but you would need to slow your PS passes down.

For Petit: Spec for the LP pump with 1 injector on is 200-225PSI on the LP pump. I have seen these wired backwards before and they were only reaching about 160psi.
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Im pretty sure Petit supplies the lp pump, for the PS, 3x foam, etc...
 
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toddmullens

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AnalyticWash said:
You will not reach the flow rate required for a Petit to properly disperse PS onto the car with good coverage. They use such a large nozzle you need higher pressure and more flow. If you wanted to run lower pressure (to an extent) you could but you would need to slow your PS passes down.

For Petit: Spec for the LP pump with 1 injector on is 200-225PSI on the LP pump. I have seen these wired backwards before and they were only reaching about 160psi.
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set the pressure too high and you will have issues with additional solenoids opening after the initial solenoid opens. For instance the top presoak solenoid might not open properly after the side solenoid opens on startup.
 
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water guy

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Roz said:
Touch free presoaks require good coverage to achieve necessary strength so you cannot rush the trolley too fast. We have been experimenting with various speeds on our razor and see the difference if we run it too fast. We also have increased our dwell time to 20 sec from 15 which as gotten rid of eyebrows consistently. Our dwell time is divided evenly between lost LP1 and LP2. Seems to deliver a better result.
Click to expand...
What brand of chemical and are you doing hi ph low ph
 
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