Quote:
|
Originally Posted by j30tman
I bought a stethascope today and listened to the motor. The noise is most noticable from the front of the drivers side valve cover and the front center of the engine. I'm still not sure exactly what it is. I've heard that there are springs in the cam sprokets? What sounds do they make when they go bad? I plan on changing the oil this weekend and flushing the engine. what should I flush it with?
|
I think its very cheap to have nissan engine specialist to listen and give an idea if its the valve lifters, R&R price. In right place the cost is 0$, takes 1minute. Ask their opinion which cleaner is best; seafoam is one known trademark (carefully follow written instructions). Afterwards change to original Nissan oil filter.
You may download any nissan manual [havin V6] and seek pics for hydraulic valve lifters, theyre about the same in all. (See Links also on my web page.) Small 'cylinders with imbedded pistons, spring' that are filled with oil: system automatically adjusts for valve gap - temp compensation.
119k is NOT a typical time for lifters to go. However, if oil flow becomes restricted, they may go bad during 1k...
(Dunno if your engine has Variable Timing Cams VTC's. Theyre known to go bad: system may be disabled via grounding. Loose 9hp over 5000rpm....)