Rattleing nose in front of car when excelarting, the more gas given the louder it gets
I have the same car and when she got around 200,000 i had to start running a heavier grade of motor oil. If you have high mileage then the cam support bearings, crankshaft support bearings have excessive oil clearance. Listen to the knock with the hood open. If the sound is a deep low tone knock then it is the lower end of the engine. If the knock is high pitched like a tic tic sound it is usually in the top end. Lower end is where the crankshaft and pistion are located and the top end is where the valves and camshafts are located in that engine. You can take a broom stick and probe around the engine (careful not to touch moving parts) and put it to youe ear with a little presure and you can hear different sections of the engine to see where the knock is the loudest. Kinda like a doctors stefascope. If it is more like a grinding noise it could be a tensioner pulley, idler pulley, alternator bearing, a/c compressor clutch.
Nov 19, 2010 |
2000 Nissan Maxima