Can timing chain noise be intermittent?
The sound can be intermittent or constant, but it will be a metal to metal contact. Such a noise will reveal a loose timing chain hitting the inside of the timing chain cover every time it rotates. If you hear a rattle, metal to metal slapping or scraping coming from inside the cover, it indicates a timing chain noise.
Is some timing chain noise normal?
Timing chain noise is commonly most noticeable during cold startup of the vehicle when oil pressure and oil flow is at its lowest. If the timing chain wear is great enough so the tensioner can no longer compensate for the slack, the noise may continue even after warming up.
Can you tighten timing chain?
Timing chain’s have no tensioner, are made to fit, and cannot be tightened. When a timing chain is stretched too far, you purchase a timing set (chain with matching crankshaft & cam gears, as they MUST be changed together.
What happens when a Nissan N47 timing chain breaks off?
The timing chain in the N47 can fail anywhere between 40 to 100k miles and can cause serious damage to the engine as its parts loose the synchronization. Most of the times when the timing chain breaks off inside the engine it also damages the engine components with it, which leads to huge repair bills.
What kind of engine does a BMW N47 have?
Introduction The BMW N47is an Inline 4-cylinder diesel engine that has been installed in the BMW 1, 2, 3 and 5 series, respectively X1 and X3, diesel variants from 2007 to about 2014. This engine is prone to excessive timing chain wear and premature failures. Contentshide
Why is my timing chain so loud?
Maybe it goes through a stange of being louder than usual as part of the engine heat cycle. Either way, I think I better start saving some pennies for a timing chain replacement!
What happens when a timing chain breaks?
Most of the times when the timing chain breaks off inside the engine it also damages the engine components with it, which leads to huge repair bills. This problem can also be diagnosed prior to its complete failure by looking out for a rattling noise from the rear side of the engine.