Check For Other Hard-Start Causes

1. A factor which may affect starting performance is the vehicle oil viscosity. API SG or SH rated 5W-30 motor oil is preferred for most Nissan models. In colder weather, 5W-30 rated oil will make starting easier and maintain a more stable idle during warm-up. This is due to the lower viscosity of 5W-30 at lower temperatures compared to 10W-30.

2. Before installing new parts, make sure of the following:

^ Check the engine oil level. If the engine oil level is low, add oil as needed. If the engine oil level is high (above the "H" mark on the dipstick) and the oil has a gasoline odor, change the engine oil and filter before proceeding.

^ Battery fully charged: battery cables and terminals clean and tight.

^ Fuel pump function is OK (squeeze the fuel line with your fingers and feel for pressure when the key is turned to the "on" position).

^ Compression is OK.

^ Use CONSULT to check for any related diagnostic trouble codes (e.g.: injectors, ignition system, etc.) and repair as needed.