Question about Mini Cars & Trucks
Starts fine. When throttle is at lowest RPM - nothing functions. When I push throttle half way - it becomes operable, but still low on power. On full throttle, at highest rpm the machine functions fine. My concern is that it should function at any rpm, or at lowest at least something should move, but nothing does. Please help if you have any idea.
You assumption is right
the pump is operating at idle as at full rpms and is controlled by pressure relief valves
When demand for pressure is low the valves will be partially opened and will operate when the pressure is reduced ( ram valve is moved)
Higher rpms maintain the pressure for faster ram operation
I would suggest that you have the system pressure tested by a service centre as it could be a malfunctioning valve (solenoid) or a failing pump
Posted on Mar 28, 2015
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Posted on Jan 02, 2017
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