Car engine dry grinding is how a situation, there is no relationship with the oil pump?

 Car engine dry grinding is how a situation, there is no relationship with the oil pump?
 
Recently, my friend found his car out of some problems. Specifically how it is not very clear, start up  the car in the morning, about ten seconds, the valve does not ring, but the vehicle shaking and, after ten seconds, the valve just rang, a minute later, valve sound smaller, the vehicle began to feel smooth them.
My friend on the understanding that not because these first ten seconds of each engine engine lubrication system is not enough, because the engine oil pump   running slowly yet, so the oil can not be effectively transported to various needs lubrication friction surfaces go, therefore, because each part is still in the dry state, small engine from the car to feel not smooth. And when ten seconds later, the way the oil pump operation, the components will get the corresponding lubrication, so there is no dry grinding, driving it smoothly, and on this matter, Xiaobian very worried, will over time, wear and tear related parts of the car it? This is not the oil pump running sluggish reasons.
     Car repair master this argument is because the car was parked a night, so the oil pump the oil to flow back to the shell, so when the next day to start the car when the engine oil of the friction surface is not or only rarely of fuel, so will be more mobilized valve sound. This oil pump is not quickly start a relationship
2013-06-16 08:32:45

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