You may have a blown head gasket. If you have a compression tester available, check compression on all four cylinders andcompare the readings. If adjacent cylinders read lower compression than the other two, it is likely the head gasket is blown.
A Nissan Altima with a 2.5-liter engine typically requires four spark plugs, as it has a four-cylinder engine. It's essential to check your specific model year and engine configuration, as some variations may exist. Always refer to the owner’s manual or consult a professional for the most accurate information.
No both the V6 and four cylinder motors of the 2007+ Nissan Altima have timing chains.
four
No , the 2.5 litre four cylinder engine in a 2006 Nissan Altima has a timing CHAIN
4-cylinders have four spark plugs, 6-cylinders have six spark plugs, 8-cylinders have eight spark plugs, etc, etc, etc
The 2.5 litre four cylinder engine in a 2003 Nissan Altima has a timing CHAIN
The 2011 Nissan Altima has front wheel drive.
The 2009 Nissan Altima has front wheel drive.
The 2007 Nissan Altima has front wheel drive.
The 2010 Nissan Altima has front wheel drive.
The 2002 Nissan Altima has front wheel drive.
The 2012 Nissan Altima has front wheel drive.