Posts tagged Car

After my timing belt change, I have been experiencing some engine vibration. 2nd trip to the workshop didn’t help either. Going to the workshop again this Thursday hoping it will be fixed for good.

A brief info on my car, its a 2001 Mitsubishi Eclipse RS, black in color with paint cancer, thanks to Mitsubishi.

It is powered by a 2.4L Mitsubishi Sirius 4G64 16-valve SOHC. There are a few variants of 4G64; 8-valve SOHC; 16-valve DOHC; etc.

It is found in Mitsubishi, Hyundai, some American cars and some Chinese cars.

From what I have discovered so far, 4G64 have 2 balance shaft! From previous service manuals, I never heard any of them saying there is 2. I need my oil pump sprocket to be rotated 360 degrees and realigned!

There are 3 method to determined if it is out of phase:

1. Slot a screw driver into a slot, if it goes in deep, it is correctly aligned, the screwdriver will go in deep.
2. See if the sprocket turns counter-clockwise or clockwise.
3. Find out last minute after everything has been put together, take off everything and rotate the sprocket.

NOTE that there is an easier way to do this. Simply rotate the mark on the oil pump sprocket until it is pointing straight up, and let it go. If the sprocket rotates towards (counterclockwise) the timing mark on the engine, the oil pump sprocket is aligned correctly. If it rotates away (clockwise) from the mark, spin the sprocket a full turn and test again, and it should properly rotate towards the mark now. Now line the mark on the sprocket back up with the mark on the engine. This avoids having to remove the rear access bolt entirely.

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Caution:
MAKE SURE THE BALANCE SHAFT IS PROPERLY POSITIONED. It is possible for the oil pump sprocket timing marks to be properly aligned, and have the balance shaft out of phase. This could result in a SEVERE engine vibration.

source: http://www.vfaq.com/mods/timingbelt-2G.html

picture from : http://chinamobil.ru/doc/4g64/manual.php?docid=1669&modelid=&p_chid=&p_page=10

My next oil change is due soon. Thinking of trying out Royal Purple with Mobil 1 Oil Filter. Apparently Royal Purple is one of the best engine oil available and I have heard many people using it. I wonder what other oil filter I can trust.