Rick's Free Auto Repair Advice

Posts Tagged: PCV valve rip off

PCV Valve Rip Off

Is a PCV Valve a Rip Off Shops ALWAYS recommend replacing your PCV valve. But that’s just their normal PCV valve rip off routine. Before I explain how the rip off works, you need to know a bit about engines. Think of the piston and cylinder like a doctor’s syringe. The rubber tip on the plunger is the piston. If you look closely at the rubber tip, you’ll see several rings around it. Those rings press against the side of the syringe and seal it so it can push the … Read More


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