2001 Nissan Other

Engine Performance problem
2001 Other Nissan Models 6 cyl Four Wheel Drive Manual 128k miles

My patrol 3.0di has become difficult to start. The problem is worst on a cold start first thing. If I get it started in the morning it will start all day. I need to crank the ignition excessively to the point where the battery is becomming flat before it will start. There is a small amount of grey smoke on start up. I have treated the fuel with " cyrus marine" in an attempt to clean the injectors but this has made no difference.
October 4, 2008.

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