Question about Cars & Trucks
My Mercedes diesel engine makes a very loud rattling noise when it is idling. it goes away as soon as I rev'it up. i have no idea where is coming from.
A cylinder hub get bored , ot its arm bearing ( in its crank shaft )and it can give the cylinder more uplift to hit the knocker rods and make noise , sometimes the compression is low in one chamber and rattles the cylinder to the bed , however ? you can either buy or rent a tool called STEELMAN wireless chassisEAR , to diagnose which piston is doing that , or which injector is responsible , Deisel as we all know is more dense than Gasoline so it needs highly compressed air to ignite , you can also use that tool to read all your isolating parts in your vehicle ( such as suspension , wheel bearings , e.t.c ) it may cost $40 to $50 for that tool , but it will save you a lot of money in finding the problem and perhaps you can fix it yourself .
Posted on Nov 22, 2014
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Posted on Jan 02, 2017
SOURCE: engine noise at cold start-up.
Sounds like your oil pump inside the engine is not pumping oil fast enough when you start your vehicle its common problem for mitsubishi motors my car does the same thing.
Posted on Nov 04, 2008
Check under the hood and inspect the valve cover gasket. If it's bad it would explain why you don't see any leaks on the ground because it's probably burning off on the manifold. This ticking you're hearing is a lack of lubrication to the rocker arms. Apart from the valve cover gasket, you should get under the car and inspect the oil pan and oil filter for seepage. Best of luck on your problem.
Posted on Jun 10, 2009
When catalytic converters go bad, the porcelain matrix inside comes loose and is noisy.
But you can just unbolt it, break up the loose chunks, pour out the pieces, and it will run better than ever.
If you don't pass the next emissions test, then replace it.
But it could just be the heat shield rattling instead.
Take the shield off first, to see if it goes away.
Posted on Jan 03, 2010
Misalignment of the belt, incorrect belt, worn or loose tensioner, Too tight of an adjustment (many service centers do this on purpose so when the belt breaks in it becomes properly adjusted, I do not believe in this philosophy), The belt is actually one long belt called a serpentine belt.....
Posted on Feb 21, 2010
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