mannysmechanicalrepairs.com.au February 28, 2017 No Comments

Fuel Injectors – What Are They?

In recent months I have come along problems with fuel injectors and they seemed to be one of the most overlooked and under-serviced components in the engine, yet their role is so vital.

What are Fuel Injectors?

Fuel injectors spray a fine, atomized fuel in or to the combustion chamber of the engine. This fine spray of fuel combusts when the spark plug is fired in a smooth flame propagation or front which burns the fuel, causing a incredible amount of controlled pressure forcing the piston down the cylinder to the crankshaft.

The diesel injector works in the same principal, except there is no spark plug. The fuel is injected when the piston is arriving to the top of its stroke, the internal heat caused by the compression (or compressed air) ignites the diesel fuel forcing the piston down. It’s a matter of interest because the combustion process is a process of heat accumulation there is a significant KNOCK in a diesel engine; hence this is why diesel engine are more noisy than petrol engines.

What are the Benefits of Fuel Injectors?

Fuel injectors are electronically controlled by computers. It was discovered that unburnt fuel was one of the greatest pollutants so Governments put stipulations on car manufacturers to get emissions down. Fuel injection was the answer. Engineers discovered that using computer hardware and now software can program fuel injectors to inject fuel in a 1000th/second – so divide a second into a thousand and take 6-8 thousands of that to keep the injector spraying fuel (include injector dead time in that equation). This is called milliseconds or injector ON TIME. This can also be represented in injector duty cycle – on time compared the time the injector is not energized in a given cycle.

The real benefits was better fuel economy, more power, less emissions, easier start up, easier transition from cold start to normal operating stage.

Problems & Symptoms of Poor Performance Injector

  • Performance loss;
  • Engine stutter, hesitation and stumbling;
  • Engine misfire;
  • Increase in fuel consumption;
  • Rough idling, engine stalling;
  • Failed emission tests. (Do not mention the VW debacle – that’s another story!) 

The Fix or Solution

Bring your car to MANNY`S MECHANICAL REPAIRS. Part of our service is to inform our customers that fuel injectors should be serviced every 80 000-100 000km and here is the reason:

  • Injectors collect contaminants from the fuel tank or from a bad batch of fuel from the refineries.
  • Injectors can develop carbon build up on the spraying pintles causing a partial blockage. 
  • Injectors can have electromagnetic faults affecting the speed and operation of their performance. 
  • Injectors may have fuel pump delivery problems. 

Here at MANNY`S MECHANICAL REPAIRS we have full diagnostic facilities. We also recommend and perform inline fuel rail injector service, which cleans intake manifold, pistons, injectors and exhaust. we add fuel tank additive at 80 000 to 100 000km.

At 180 000-200 000km we strongly recommend the physical removal of injectors, to be bench tested before ultrasonic bathed and have each individual injector flow & load tested with results recorded, new o rings ,seals fitted.

IF YOU CANNOT MEASURE IT YOU CANNOT MANAGE IT

On one last note, we strongly recommend replacing fuel filters on every diesel service.. true the cost is higher but we are constantly astounded of the ridiculous amounts of water and rubbish found in diesel fuel filters.

I hope this has helped.

– Manny, 0411 496 621
To serve, to perform, to guide.

 

At Manny’s Mechanical Repairs you are in good hands, our main services include, Safety CertificatesLogbook ServiceFree Pickup & Delivery, and Car Cooling System Repairs.

We have the latest diagnostic equipment and my work van is fitted out with an industrial air compressor. This enables me to perform heavy duty work and give you – the customer – the best service at any place and at any time.

For Bookings and enquiries, please contact us on 0411 496 621email us at agrade@mannysmechanicalrepairs.com.au or visit our site www.mannysmechanicalrepairs.com.au.

mannysmechanicalrepairs.com.au February 20, 2017 No Comments

Petrol or Turbo Diesel – Which Engine is Better or Do I Buy?

In recent years engine management technology (engine computers) have made incredible performance development in both turbo diesel and petrol engines. “So what’s the difference or which one do I buy?” you might ask. 

Petrol and diesel fuels have different molecular density. Petrol and diesel produce power through different applications of combustion process. Torque is turning force, horse power is the speed of the turning force. 

Turbo Diesel Advantages 

Excellent fuel economy; excellent low down torque; robust; excellent carrying or towing trailers, boats and caravans; great for long trips; 4WD up sand dunes; great fro going through creeks.  

Petrol Advantages

Smoother operation; less emission and far better emission control; better for small trips; cheaper servicing cost; engine can reach higher revolutions quicker hence more horse power; more responsive. 

When thinking of buying your next car or 4WD write down what type of usage you need from your vehicle. If it’s small trips, occasional trip to the coast, or mainly to pick up the kids from school, then petrol is the go. If you do a lot of heavy duty work or towing, go up big sand dunes or up the Toowoomba range, then turbo diesel is the way to go. 

Manny’s Mechanical Repairs services both petrol and turbo diesel engines. We provide a full detail safety report and give the customer a full comprehension and understanding in the condition of their vehicles. 

– Manny, 0411 496 621
To serve, to perform, to guide.

 

At Manny’s Mechanical Repairs you are in good hands, our main services include, Safety CertificatesLogbook ServiceFree Pickup & Delivery, and Car Cooling System Repairs.

We have the latest diagnostic equipment and my work van is fitted out with an industrial air compressor. This enables me to perform heavy duty work and give you – the customer – the best service at any place and at any time.

For Bookings and enquiries, please contact us on 0411 496 621email us at agrade@mannysmechanicalrepairs.com.au or visit our site www.mannysmechanicalrepairs.com.au.

mannysmechanicalrepairs.com.au April 19, 2016 No Comments

Tyres – The Critical Components of Car Performance & Safety

The tyre is probably the most important component of the modern car, which requires constant inspection and reviewing.

The tyre has the most important job of transferring driver demands to the road. The tyre’s ability to grip have a direct relationship to braking and handling of your car’s performance.

Major tyre companies spend millions of dollars in research and development to produce tyres to handle various conditions.

Before you buy your next set of tyres, ask yourself a few questions:

  1. Do I only do highway driving?
  2. Do I drive over dirt roads in the country?
  3. Do I go off road driving in rugged terrain?
  4. Do I drive up mountainous country where it rains a lot?

The life span of a tyre can vary from 25,000KM-75,000KM, all depending on driving characteristics and the condition of your car’s steering and suspension.

To this day a tyre company has not been able to design a tyre that can handle wet conditions and give you excellent mileage. The reason is that different tyres require different rubber compound for different conditions. That is why in motor racing cars hurriedly come into the pits (and change tyres) when weather changes.

A soft (rubber) compound gives good grip in the wet but low mileage in the dry. A hard (rubber) compound gives poor grip in the wet but good mileage in the dry.

At Manny’s Mechanical Repairs we constantly inspect your tyres when your vehicle comes in for a service. We rotate your tyres, check your tyre pressure, check your suspension and steering and give you a report on any defects to ensure peace of mind motoring.

– Manny, 0411 496 621
To serve, to perform, to guide.

 

At Manny’s Mechanical Repairs you are in good hands, our main services include, Safety CertificatesLogbook ServiceFree Pickup & Delivery, and Car Cooling System Repairs.

We have the latest diagnostic equipment and my work van is fitted out with an industrial air compressor. This enables me to perform heavy duty work and give you – the customer – the best service at any place and at any time.

For Bookings and enquiries, please contact us on 0411 496 621email us at agrade@mannysmechanicalrepairs.com.au or visit our site www.mannysmechanicalrepairs.com.au.

mannysmechanicalrepairs.com.au August 4, 2015 No Comments

Manny’s Mechanical Repairs Can Service Your New Car or Vehicle Under Warranty

In this newsletter from the ACCC, it dismisses some of the myths around new car warranties and non-dealer mechanics.

Car need a service? 

It’s time to service your car. Where do you turn? Someone has told you that if you don’t return to either the business where you bought the car or an authorised agent of that business, your warranty will be void. Is that true? Can you get your car serviced by someone other than the business or an authorised agent of the business that sold the car without voiding the warranty? The short answer is ‘yes’. 

New and used vehicle servicing in relation to general servicing, motor vehicle dealers are entitled to insist that any servicing performed on cars they sell is carried out by qualified staff, according to the manufacturer’s specifications, and using genuine or appropriate quality parts where required. Provided these conditions are met, regardless of where you choose to get your car serviced, your warranty will remain intact.

Qualified staff is a party or parties, other than an ‘authorised dealer’, who is capable of performing car servicing.

Genuine or appropriate quality parts 

The issue here is not who manufactured the part/s, it is whether the part/s are fit or appropriate for the purpose intended. If a part is non-genuine, but is interchangeable with the genuine part, it could be seen as being fit or appropriate for the purpose and would therefore not void the manufacturer’s warranty. 

Thus, provided consumers do research and ensure that wherever they take a vehicle for servicing, the staff are qualified and all other provisions above are met, the warranty will be safely intact for the warranty period. 

You should expect your new car to run smoothly for some time without requiring any repairs. If, however, your new car has a manufacturing fault, then under your statutory warranty, you should expect the problem to be fixed by the supplier or manufacturer free of charge

Dealers are not permitted to limit their obligations under the warranty and refund provisions of the TPA or fair trading legislation, or make any representations to this effect, e.g. that the warranty is void if the vehicle is not serviced by the dealer or its agent. 

Click here to view the ACCC Newsletter

– Manny, 0411 496 621
To serve, to perform, to guide.

At Manny’s Mechanical Repairs you are in good hands, our main services include, Safety CertificatesLogbook ServiceFree Pickup & Delivery, and Car Cooling System Repairs.

We have the latest diagnostic equipment and my work van is fitted out with an industrial air compressor. This enables me to perform heavy duty work and give you – the customer – the best service at any place and at any time.

For Bookings and enquiries, please contact us on 0411 496 621email us at agrade@mannysmechanicalrepairs.com.au or visit our site www.mannysmechanicalrepairs.com.au.