High fuel pressure can be unnerving to a technician who hasn’t dealt with it before. Everyone has heard the horror stories about unthinkably high fuel pressure coupled with potentially fatal voltage.
While this is extremely important to watch out for, below is a completely different, common problem that puts the high pressure fuel system pretty much out of commission.
While it would not be the first thing to inspect for a “lack of power” complaint, it is a common issue from early Volkswagen models equipped with a high fuel pressure system. The Real Fix below is a great addition to your reference library.
2006, Volkswagen GTI, 2.0
No Power, Replaced Camshaft and High Pressure Fuel Pump
The customer states the vehicle lacks power.
Performed a road test to verify the customer’s complaint, and confirmed the vehicle had a lack of power. Removed the valve cover to gain access to the high pressure fuel pump for inspection and discovered the intake camshaft lobe that drives the high pressure fuel pump had been worn down. The worn camshaft lobe damaged the high pressure fuel pump and camshaft follower.
Replaced the camshaft and the high pressure fuel pump and performed a road test to verify the vehicle operated properly. Confirmed the customer’s concern had been corrected.
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