1996 Volkswagen Jetta Q&A

1996 Volkswagen Jetta Question: Checking on the Code

I keep getting a P0303 and P0440 -
Answer 1
P0303 references a misfire on #3 cylinder. Ignition faults including spark plugs , cables , distributor cap and rotor are common problems. P0440 is a malfunction in the evap system. Items to check include gas cap (is it loose?) , evap purge valve ( leaking or blocked internally) and plumbing/hoses to fuel tank. Any place fuel vapors can escape is basically involved. There are specific devices known as "evap testers" or "smoke testers" to find small leaks. -
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