Question about 2002 Nissan Sentra
WHEN I COLD START MY 2002 NISSAN SENTRA IT WILL IDLE ROUGH FOR THE FIRST 30 SECONDS AND THEN IT IS FINE AFTER THAT.
I hate to be the barer of bad news, but may be the head gasket.
My car started with rough idle. Then very hard to start in cold weather. Next started overheating, but no output from heater. Trickling sound from behind dash board. Overflow bottle overflowing.......
I replaced the water pump, radiator cap, thermostat, coolant, fan belts, power flushed the system. Nothing worked. Some research gave me the answer.
The head gasket leak was allowing exhaust gases to enter the cooling system, displacing the coolant. After use, as engine cools, coolant is sucked back into the system and coolant seeps into the cylinder. This gets worse over time.
First thing you'll notice is the rough idle as the spark plug burns off the coolant in the cylinder. (This is especially true at low temperatures.) If it is the head gasket, the other symptoms will follow as time goes by.
Posted on Jun 03, 2009
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Posted on Jan 02, 2017
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