When operating a pressure washer in high elevations, there are various factors that need to be considered to ensure that your pressure washer will operate as expected. High Altitude Kits are available for some power washer engines and serve to lean out the fuel mixture in the carburetors allowing them to start & run better at higher altitudes.
Also, for hot water machines, care must be given to also "lean out" the diesel fuel delivery system. At lower altitudes (3000 to 4500 ft) one can lean out the fuel delivery by lowering the fuel pressure while checking the burn quality with an exhaust gas sampling devise, and the diesel fuel pressure with a pressure gauge. Above 4500 feet however, one should reduce this fuel delivery with nozzle size reductions as diesel fuel pressures should not drop below 100 psi to insure good fuel atomization.
Hydro Tek is in a unique position, because we are located in Southern California, we are able to test our pressure washers in our local mountains. This has been a great advantage to develop and offer systems to various customers who require the use of their pressure washers in high elevations.
Part #s for these kits are:
AMK27 - 27HP Kohler
AMS34 - 31 HP Vanguard
AMS33 - 14 HP Vanguard
AMS31 - 18 HP Vanguard
AMS32 - 21 HP Vanguard
For additional information please contact the Hydro Tek sales team at (909) 799-9222 ext.) 3.