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My 02 sprinter van makes a horrible rattling noise when idling.

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.

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  • Contributor
  • 29 Answers

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

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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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.

good luck

Posted on Nov 04, 2008

greg_margo
  • 1959 Answers

SOURCE: oil consumption, rattle, engine noise

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.
Greg

Posted on Jun 10, 2009

  • 55 Answers

SOURCE: diesel fuel fumes

check your injector returns, and diesel filter return pipes as well as injector washers

Posted on Nov 04, 2009

kirkx
  • 2019 Answers

SOURCE: 98 Ford Explorer engine/exhaust noise

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

kb8dns
  • 494 Answers

SOURCE: 2006 Dodge Gr. Caravan. Loud humming noise upon

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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1 Answer

Loud rattle sound when Idling


I suggest you have your car checked as soon as possible - while a rattling exhaust isn't desperately urgent it could be the cat breaking up which might later restrict the flow of gases. Most importantly excessively loose timing belts or chains tend to make most noise when the engine is idling. If the noise is being caused by this delay could be very expensive.

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When a diesel injector goes bad and no longer sprays a fine mist of fuel but 'hose pipes', this causes engine knock or hammering. Some folks call this 'nailing' but is usually under acceleration when this 'nailing' is heard.

Injector must be bech tested at a diesel shop.

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This is not an injector problem, you mush have something else going on. Have the dealer test the system electronic controls.

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Got a 311cdi mercedes sprinter ,mileage is 250k drives well but engine is making loud tapping noise & there is oil in radiator. please help.


Your low on oil (the tapping noise) because its in your cooling system. Your vehicle uses the radiator as a cooling system for your engine oil. It runs through it to help cool the engine oil. If you have oil in the radiator, you need a new radiator before you cause more damage to the engine and the cooling system.

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Can u set the injector timing on a sprinter van using a dial gauge in the no 1 injector at the rear of the pump and if so what are the settings please


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1 Answer

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Sounds like a bad water pump or a tensioning pulley.

Mar 09, 2009 | 1993 Pontiac Grand Am

3 Answers

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.

good luck

Nov 04, 2008 | 2002 Mitsubishi Montero

1 Answer

Knocking noise at idle


This is AC compressor rattle, don't worry about it unless it is really loud, in that case replace the compressor.

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