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HELP PLEASE. I am having a real power problem. NO POWER on grades in my bus. I have changed the fuel filters and air filters. The engine has been rebuilt and runs good, sounds good, does not smoke. I can not go but ten to fifteen mph up a 4% grade. I have checked the fuel return to the tank and it is flowing in excess of 1 gallon per min. I checked the air pressure on the airbox to be zero at idle and 14psi at 1800rpm no load. Does the pressure increase with load? My manuel shows the airbox pressure should be aprox. 24psi at full load. Are these conditions normal or why don't I have power. |
RV and bus conversion info since 1996.
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