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About spelunkerd
Exploring the science and engineering behind automobile design and repair.
Recent Videos from spelunkerd
How to install/remove Harken roller furling on a sailboat
Roller furlers allow convenient storage of the foresail, but sometimes require maintenance and may need to be removed or replaced for various reasons, perhaps even at sea. Most sailors don’t do this often enough to have committed the exact sequence of steps to memory. This video describes the proce… How to diagnose a bad Evap purge solenoid valve, P0497, P0441, P0443, P0444, P0446, etc.
One of the more common causes for a P-0497 trouble code (Evap emissions low purge flow) is a faulty evap purge solenoid, which can stick open, fail to open completely, stick closed, or fail intermittently. Before laying out cash for a new solenoid it is wise to exclude a wiring problem, a kinked or… How to replace a marine diesel fresh water pump
This is the second of a two part video, showing how to diagnose and replace a leaking fresh water pump on a Yamnar marine salt water diesel engine (3GM30FC-YEU). In part 1 we removed the old pump and we decalcified the heat exchanger. Today we’ll install the new pump, pressure test the system, and …