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4d56 turbo when engine is running there is a mild whistling sound. could there be a problem?

Mild whistling sound

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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

j_del
  • 1586 Answers

SOURCE: whistleing sound on golf gt tdi

It's probably the turbo you're hearing. They spin very fast and make a noise like that. Ever hear an 18-wheeler go by you and accelerate and they make that high-pitched whistle? That's the turbo spooling up. Now, if it sounds like a dentist's drill, that's usually a sign that the turbo is failing, but I'd bet that since your car is under four years old, as long as you've kept up on the maintenance, it's the normal turbo spool.

Posted on Aug 17, 2008

  • 4793 Answers

SOURCE: is it advisable to put an intercooler to a turbo

an intercooler will cool the air that the turbo has compressed(when you compress air it gets hot)you will notice the difference......but hard to give actual increase in bhp.your acceleration times will drop as well.

Posted on Apr 09, 2010

  • 94 Answers

SOURCE: Nissan Navara STR 2006 d22 3lt turbo. Turbo is whistling very

Remember, what is heard as turbocharger noise may not be caused by a noisy turbocharger. Before replacing a turbocharger perform the following diagnosis.
A. If a loud whine or whistle is heard during acceleration and increases or decreases with rpm and load. This condition is most often the result of a loose clamp/hose at the turbocharger compressor outlet, charge air cooler inlet, outlet or at the intake manifold.

1. With the engine running at idle and the transmission in Park or Neutral with the parking brake set, feel for boost air escaping at each connection between the turbocharger compressor outlet and intake manifold. For limited access areas, spray soapy water on those connectors and look for bubbles.

2. Check the exhaust manifold and exhaust system for leaks.

I hope this helped.

Thank you,
Norse

Posted on May 16, 2010

steve_e_uk
  • 1675 Answers

SOURCE: pajero valve clearance

hi the clearance on these will be 0.25 hot ( just run ) and the reason why you have oil coming out from dip stick is either you have too much oil in and need to drain some, or somewhere on the vacuum system you might have a blockage which in turn is casing a pressure build up and is forcing the oil out...hope this helps

Posted on May 31, 2010

elix0411
  • 3530 Answers

SOURCE: 4D56 turbo diesel engine in

Welcome to Fixya
Error 41 is the butterfly spindle in the intake manifold just below where the hose from the intercooler joins. It should be open when engine running if it is closed it will cause boost issues and running problems.
Thank you for using Fixya!

Posted on Jun 11, 2011

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1 Answer

Head torque specification for l200 4d56 DID DOHC 2007


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turbo whistle is common as it comes from the tips of the compressor wheel passing through the sound barrier and the turbulence occurs. IN the older trucks you would the turbo whistle as the engine reached full RPM just before a gear change. In smaller engine it is not do noticeable as there is an excess of air pressure that keeps the compressor wheel at a lower rpm and the pressure is dumped out. Turbo compressors reach revolutions in excess of 120.000 rpm under full load If it has just started to make the noise then check the intercooler system for leaks--loose clamps--- splits - Have the turbo compressor checked for damaged fins from the ingress of fine dirt from a bad air filter---check the air filter is not blocked as the turbo speed may result from running in a partial vacuum ( no load on the compressor wheel)

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Where is MAF/MAP on Mitsubushi 4D56 turbo diesel?


I suggest download this specific Factory Service Manual: Mitsubishi FSM Engine 4D56-25-diesel

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Vw passat 2006 whistle sound after changing turbo


you must have a air leak between turbo and air intake somewhere so run engine and have a good look but if the old turbo was worn out then this is why it sounds different as its quite normal for these vehicles to sound a bit potent to say the least

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Nissan Navara STR 2006 d22 3lt turbo. Turbo is whistling very


Remember, what is heard as turbocharger noise may not be caused by a noisy turbocharger. Before replacing a turbocharger perform the following diagnosis.
A. If a loud whine or whistle is heard during acceleration and increases or decreases with rpm and load. This condition is most often the result of a loose clamp/hose at the turbocharger compressor outlet, charge air cooler inlet, outlet or at the intake manifold.

1. With the engine running at idle and the transmission in Park or Neutral with the parking brake set, feel for boost air escaping at each connection between the turbocharger compressor outlet and intake manifold. For limited access areas, spray soapy water on those connectors and look for bubbles.

2. Check the exhaust manifold and exhaust system for leaks.

I hope this helped.

Thank you,
Norse

May 16, 2010 | 2005 Nissan King Cab

5 Answers

4d56 engine high fuel consumption


4d56 is a diesel engine, fuel, oil, air filter change definitely, regular oil change, check tyre pressure, etc all basic things u can do yourself, after all its no 40+ MPG modern diesel engine its been around for years and years and being used in courier van, pajero and delica, i have a Delica with 4D56 turbo and its loves drinking diesel like no tomorrow, run it on veggie oil like i do you wont worry too much about your fuel consumption.

Jan 06, 2010 | 1987 Mitsubishi Passenger

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Oil coming out of exhaust and whistling turbo


it sounds like your turbo has packed in firstly the oil seal in your turbo has failed thats why ur seeing oil from exhaust & the whistling from turbo is the vanes in turbo breaking up so i would advise not to use car until new turbo is fitted & inter cooler pipes and inter cooler itself are checked & cleaned for swarf from turbo you can check turbo by disconnecting turbo pipe &inspecting turbo vanes (fins) to see if broken up or any damage to chamber.

Feb 14, 2009 | 1991 Peugeot 405

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