Reply To: Choppy air sound from round muffler water hole

New Topics Forums General Discussion 1999 – 2002 Nissan Quest Choppy air sound from round muffler water hole Reply To: Choppy air sound from round muffler water hole

#11741

prgonzalez
Participant

Selectmarc,

The idle of this engine has to be 750+/-50 RPM. 550 is too low. I would check/replace the idle air control valve (IACV) located on top of the throttle body. Other causes for rough idle are: spark plug, ignition wires, distributor cap, and distributor rotor. Is Service Engine Light ON?

Which muffler has the hole? counting from the engine back.