I'm sorry to hear about the troubles you're experiencing with your 1996 Infiniti I30. Having multiple issues happening at once can be quite frustrating. Let's try to break down the problems and potential causes:
Knock Sensor Code: The knock sensor detects engine knocking or pinging, which can indicate issues with ignition timing or fuel quality. Engine knocking can lead to decreased performance and potential engine damage if not addressed promptly.
EGR Valve Code: The EGR (Exhaust Gas Recirculation) valve helps reduce emissions by recirculating a portion of exhaust gases back into the engine for combustion. If the EGR valve is faulty or clogged, it can cause rough idling, decreased performance, and increased emissions.
White Smoke: White smoke from the exhaust can be a sign of coolant or water getting into the combustion chamber, which can be caused by a blown head gasket or a cracked cylinder head. This issue needs immediate attention, as driving the car with coolant in the combustion chamber can lead to severe engine damage.
Spitting Out Gas Through Tailpipe: Gasoline coming out of the tailpipe can be caused by incomplete combustion due to various issues, such as faulty ignition components, fuel injector problems, or engine timing issues.
The recent replacement of the valve cover gasket and tune-up may or may not be directly related to the current issues. However, it's essential to check that the valve cover gasket and associated components were installed correctly to prevent oil leaks that could lead to misfires or other engine issues.
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Saturday, June 28th, 2014 AT 4:16 PM