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The 2.5 litre four cylinder engine in a 2003 Nissan Altima has a timing CHAIN
No compression could mean a blown head gasket, cracked head or cylinder.
The gap should be 0.043 inch.
Cylinders compression pressure Sentra 1.8 : 192 psi
It must be a timing CHAIN , the Gates website ( they make timing belts etc. ) does not list a timing belt for the 2003 Nissan Altima , 2.5 liter 4 cylinder
It must have a timing CHAIN because the Gates website ( they make timing belts etc. ) does not list a timing belt for the 2.5 liter 4 cylinder engine in a 2003 Nissan Altima
were is camshaft for altima 2003 3.5
How do you replace rear shocks on a 2003 altima?
thermostat location on 2003 Nissan altima
The 2003 Nissan Altima has 16 valves.
I have a 2005 and compression should be close to 120 psi. Normally a good engine will have compression between 115 and 130 psi but a leak down test should be performed also to know the full condition of a cylinder.
Coil pack and the spark plug- check compression