CODE PO300 TRIED TO FIX

2003 Nissan Sentra

Tiny

brookmiller

October, 11, 2012 AT 3:28 AM

I have the code po300 and ive tried to fix it and spending countless money on parts I don't need cause its not helping the misfire issue need help

replaced the wire set and cleaned all the sensors and everything but the problem is still there?

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Tiny

mhpautos

October, 11, 2012 AT 8:26 AM

Random multi cylinder misfire. May be a coil problem, plugs, egr valve vacuum leaks I would try and get a run on an engine oscilloscope, this will help nail down the exact cause of this problem.

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