Question about Nuova Simonelli Mac 2000 I Group Espresso & Coffee Maker

Open Question

Hello everyone, There is a whining noise when pumping espresso, and it lacks pressure. Can I do this repair myself, I have a basic understanding of mechanical assembly.

Posted by on


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Can't get rid of Power Steering noise on my 2001 Oldsmobile Silhouette

You haven't described the noise or whether the noise increases when the pump is under load, or perhaps that is the only time it makes a noise?

As you undoubtedly know some noise is natural when a fluid is being forced through hoses and orifices under great pressure and some systems are noisier than others, especially when the steering is on full lock and all the surplus pressure is diverted through the relief valve.

Perhaps there is an inherent fault that is causing the fluid to become aerated or perhaps it is something more basic and the drive pulley alignment is off.
Perhaps it is a matter of poor routing of hoses and pipes transmitting normal noise into the body and amplifying it.

I believe there are additives available that can help lessen some of the noises of complaining oil.

Mar 15, 2015 | 2001 Oldsmobile Silhouette

1 Answer

Whining noise

would need head under the bonnet to know for sure but feel the AC lines as a lack of gas can cause a noise like this but its not often that you can hear it above the clanking of the diesel engine ,no petrol ones here at our fuel prices

Jul 26, 2013 | Cars & Trucks

1 Answer

Constant whining noise from fuel pump

    1. Low Fuel

      Fuel pumps work by pressurizing the fuel and sending it to the engine. A low fuel level can cause the engine to work much harder to build the necessary pressure to pump the fuel. To analyze the problem, start the car when the fuel is low (below one-fourth tank) and listen for the sound. If the whine is audible, fill the tank immediately. When you start the vehicle again, the whine should be reduced or absent. If not, there may be another problem.
      Damaged Pump

      The whining noise may be caused by a damaged fuel pump. The fuel pump may be punctured or dented, reducing its efficiency. To resolve this issue, the fuel tank must be accessed and repaired or removed. The location of the fuel tank depends on the construction of the vehicle. In a vehicle equipped with a carburetor, the fuel pump is often located outside of the fuel tank. With a vehicle that has a fuel injector, the fuel pump is located inside of the tank. It is best to get a mechanic to address this problem.

      Impurities in Gas Tank and Engine

      • If the fuel pump is blocked by engine gunk, dirt, impurities in the gasoline or anything else, it will respond with a whine or some other very noticeable noise. Debris in the fuel tank can be sucked into the pump most easily when the tank is low. This debris gets caught in the pump and reduces the pressure. This problem must be fixed by removing the blockage which should be performed by a mechanic. Using fuel additives that clean the engine and keeping the fuel tank filled may also be a preventative measure.

    Jul 02, 2012 | 2004 Land Rover FreeLander

    1 Answer

    Installed New Motor on pump. Getting whining noise and and lost pressure in basket.

    when you replaced motor is wiring correct if 120 volt you have to change wiring or it will whine and no pressure

    Jun 14, 2012 | Jandy Stealth 1.5 HP UR Pool Pump SHPM1.5...

    2 Answers

    Whining when i press gas

    normally, the only part of your automatic transmission that will make a whining noise is the pump. it usually whines when iether the fluid is low or more commonly when the transmission oil filter is getting plugged up.

    the power steering pump will also make a whining noise too.

    turn the wheel all the way to the right and hold steady pressure against the stop. this puts maximum force on the power steering pump and, if the power steering pump is the one making the whine, it will change the sound of it. (usually louder).

    if the trans pump is making the whine noise, it should sound different in neutral compared to drive. this test will really only work if it make the noise without the vehicle moving. if it wont do it at idle hold the rpms at 2000 or so.

    if you decide the noise is coming from the transmission, and the transmission filter has not been replaced (assuming you installed a used transmission), replace the filter by removing the oil pan.

    oh and also, if it is the power steering pump you should be able to make it make the whining noise while the vehicle is stationary. if it wont make noise unless its moving its not the power steering pump.

    Mar 23, 2010 | 2003 Chevrolet TrailBlazer

    1 Answer


    The first sign would be whining at freeway speeds.
    Check the drain plug to see how much metal debris or chunks are struck to the drain plug magnet.
    There will be some fine metal ,which is normal.
    Lack of fluid( leaks / low level ) or wrong fluid can damage the diff.

    Mar 03, 2010 | 2009 Honda CR-V

    1 Answer

    2003 chevy 1500 silverado


    Jul 24, 2009 | 2000 Chevrolet Blazer

    2 Answers

    95 sububan making a winning noise when i give it gas when i let off it stops or when i get up to 70 it stops

    I am assuming the whining noise is not in the engine area.

    The transmission is the most likely cause.
    When put in a heavy load on acceleration , The trasnmission internal pump is whining . The cause of this is lack of pressure from the fluid because of a seal or gasket , clutches or steels are damage.
    When the vehicle gets into cruising speed , The pressrue is less and the pump is not working as hard. The torque convertor lock up helps the pump. I would make sure the fliud is topped off.
    The noise might go away with the correct amount of fluid thus changing the overall pressure of the transmission fluid inside.
    If this does not help, I would take to the transmission shop in the area ,
    Again this is assuming the engine is running normally.

    Apr 01, 2009 | 1995 Chevrolet Suburban

    Not finding what you are looking for?
    Nuova Simonelli Mac 2000 I Group Espresso & Coffee Maker Logo

    Related Topics:

    67 people viewed this question

    Ask a Question

    Usually answered in minutes!

    Top Nuova Simonelli Coffee Makers & Espresso Machines Experts

    J.D. Browning
    J.D. Browning

    Level 3 Expert

    2760 Answers

    Andrew Taylor
    Andrew Taylor

    Level 3 Expert

    16092 Answers

    Gil Shultz

    Level 3 Expert

    3368 Answers

    Are you a Nuova Simonelli Coffee Maker and Espresso Machine Expert? Answer questions, earn points and help others

    Answer questions

    Manuals & User Guides