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Old 03-29-2016, 02:38 PM
Fishheep1975 Fishheep1975 is offline
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2001 Xterra
 
Join Date: Mar 2016
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Default Trouble shooting P0300 2001 Exterra

Trying to decide what would be the best start to trouble shooting a P0300 code. If anyone has had this issue please point me in a direction
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Old 03-30-2016, 12:52 AM
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bennyb53 bennyb53 is offline
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2019 Sentra
2002 Altima
 
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Since I don't know the maintenance history, I would start with:
1. inspect spark plugs. take note of its condition, wet; dry; carbon up, etc.
2. do spark test on ignition coils. take note which coil is behaving abnormally like intermittent sparks as it could indicate a failing ignition coil and must be replaced, or power supply circuit issue. do visuals for damaged wires.
3. do visuals for cracked, damaged intake hoses

Check out the link below:

P0300 NISSAN Cylinder Misfire Detected Random Cylinders | AutoCodes
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