Tractor Maintenance: Replacing Fuel Lines On New Holland 1720

The New Holland 1720 tractor is a 3-cylinder compact tractor that was manufactured between 1987 and 2002. While there are no specific instructions available for replacing the fuel line on this model, there are some general guidelines that can be followed. It is important to note that working on any fuel system can be dangerous and should only be attempted by qualified individuals. The first step is to locate the fuel line and identify the type of fuel system used on the tractor. Once the fuel line is located, the next step is to relieve the pressure in the fuel system and drain the fuel tank to avoid spills. The old fuel line can then be disconnected and replaced with a new one, ensuring all connections are secure. Finally, the fuel tank can be refilled, and the tractor can be started to check for any leaks.

Identify the type of fuel delivery method used by the tractor

The New Holland 1720 tractor is a 1995 model that uses fuel, air, and fire to run. The fuel can be delivered via a carburetor, throttle body, or fuel injector. It is important to ensure the proper fuel mixture to ensure a smooth-running engine. Modern engines are able to deliver consistent performance while keeping emissions under control.

Throttle body fuel injection, multipoint fuel injection, and direct injection are the most common fuel delivery methods today. Carburetors are still common, and carburetor rebuild kits are a great way to get all the necessary parts, such as a new float, bowl gasket, or O-ring pack. Upgrading from a 2-barrel carburetor or 4-barrel carburetor to fuel injection is a simple process, requiring just a few bolts, a fuel line, and a throttle valve cable.

Diesel engines, which are common in tractors, often use a turbocharger and intercooler to boost engine power output. However, a worn fuel injector pump can lead to a rough-running engine or lack of power.

Check for any leaks in the fuel line

Checking for leaks in the fuel line of your New Holland 1720 tractor is an important part of regular maintenance. A fuel line leak can cause your tractor to use more fuel than it should, leading to increased costs. Here are some detailed steps to check for any leaks in the fuel line:

Check for Any Unusual Odours

One of the earliest signs of a leaking fuel line is the smell of gasoline or other unusual odours inside the tractor while it is running. This distinct smell indicates that fuel is escaping from the fuel line. Gaseous fumes inside the tractor can cause headaches and nausea. If you smell gasoline, treat it as urgent, as it indicates a potential leak and also poses a risk of fire or health hazards due to prolonged inhalation of the fumes.

Look for Visible Leaks

If your tractor is burning fuel faster than usual, check for visible leaks. Park your tractor after a long drive or after it has been sitting for an extended period. Look for fuel leaks on the ground or along the side of the tractor. Visible leaks can absorb dust and debris, which will eventually enter the fuel line and cause further damage and potential engine problems.

Listen for Unusual Sounds

A damaged fuel line may produce a hissing sound due to escaping fuel. Pay attention to any unusual hissing sounds when the tractor is running, especially when the engine is idling or immediately after turning it off. The hissing sound may be accompanied by a drop in fuel efficiency due to a loss of pressure in the fuel system.

Observe Engine Performance

A leaking fuel line can affect engine performance. If your tractor struggles to start, idles roughly, or experiences unexpected power loss, these could be symptoms of fuel line issues. A compromised fuel line can lead to too much air and not enough fuel in the engine's combustion chamber, which can overheat the tractor and damage the engine.

Check the Engine Light

If there is an issue with the fuel line, sensors may trigger the check engine light. While the check engine light can indicate various problems, if it coincides with other issues like fuel odours or performance problems, it's worth inspecting the fuel line. Consult your mechanic for specific information about the issue.

Perform a Visual Inspection

Regularly inspect the entire length of the fuel line for any signs of damage, including cracks, wear, or corrosion. Pay close attention to connections and junctions, as leaks are more likely to occur at these points.

Use Fuel Leak Detectors

You can use fuel leak detectors, which are devices with special sensors that can identify leaks, even in hard-to-reach areas. These detectors can be pricey, but you can take your tractor to a service centre to perform the test for a small fee.

Source the correct replacement parts

When it comes to replacing the fuel line on your New Holland 1720 tractor, sourcing the correct replacement parts is crucial. Here's a detailed guide to help you with the process:

Fuel Filter:

The fuel filter is a critical component of your tractor's fuel system. It helps ensure that clean fuel is delivered to the engine, free of contaminants. You can find a compatible fuel filter with an O-ring for the New Holland 1720 tractor on Amazon. This filter is also compatible with other Ford New Holland tractor models, so be sure to verify the compatibility with your specific tractor model.

Fuel Line:

The fuel line itself is the component that carries the fuel from the tank to the engine. It is important to replace the fuel line with one that is compatible with your tractor's fuel system and made from durable materials. Check with authorised New Holland tractor parts dealers or trusted online stores for the correct fuel line replacement.

Fuel Line Connectors and Fittings:

When replacing the fuel line, you will also need to source the appropriate connectors and fittings. These components ensure a secure and leak-proof connection between the fuel line and the fuel tank, as well as between the fuel line and the engine. Make sure to get the correct size and type of connectors and fittings for your tractor's fuel system.

Fuel Pump:

While replacing the fuel line, it is a good idea to inspect the fuel pump for any signs of wear or damage. If needed, replace the fuel pump with a compatible one for the New Holland 1720 tractor. This component plays a crucial role in pressurising the fuel and ensuring a consistent flow to the engine.

Fuel Tank:

Although it is not common for the fuel tank to require replacement, it is a good idea to inspect it for any leaks, corrosion, or damage. If the fuel tank is damaged, you may need to source a replacement tank specifically designed for the New Holland 1720 tractor. Ensure that the fuel tank is compatible with your tractor's fuel capacity and specifications.

When sourcing replacement parts for your New Holland 1720 tractor's fuel system, it is important to consult the tractor's service manual or seek advice from authorised dealers or experienced mechanics. This will help ensure that you source parts that are compatible with your specific tractor model and fuel system configuration.

Understand the process of bleeding the fuel system

To bleed the fuel system of your New Holland 1720 tractor, you'll need to prime the system by using the hand lever on the side of the fuel transfer pump. Loosen the bleed screw on the injection pump cover, which is a small screw with a sealing washer underneath it. Then, pump the primer until you see clean fuel with no air bubbles. Finally, close the bleeder.

If your tractor has run out of fuel, you will also need to bleed the injectors. Loosen the high-pressure lines at the injector nozzles on the cylinder head, and crank the engine. Watch for fuel squirting out and let all the air escape. Once you see fuel squirting from all four lines, tighten the lines and start the tractor.

If your tractor has external injectors with heavy steel lines, loosen the nut at the injector and crank the engine. Allow the fuel to leak out until it starts spurting out under pressure. If it just bubbles, there is still air in the system.

If your tractor does not have external lines, it should bleed itself out. To help the process, loosen the lines up to the engine and away from it to help fill them. Again, crank the engine while you loosen the lines one at a time, and wait to see the fuel run out before closing.

Consult a professional mechanic for advice if unsure

If you're unsure about how to replace the fuel line on your New Holland 1720 tractor, it's always best to consult a professional mechanic for advice. While you may be tempted to attempt this task yourself, seeking the expertise of a qualified tractor mechanic can save you time, money, and potential headaches down the road.

Tractor mechanics are trained to diagnose and repair issues with diesel farm equipment, and they have the necessary tools and experience to get the job done right. By consulting a professional, you can benefit from their knowledge of common tractor problems and maintenance solutions. For example, they can inspect your tractor for any underlying issues that may be causing the fuel line problem. This proactive approach can help prevent future breakdowns and save you from costly repairs.

Additionally, tractor mechanics can provide on-site services, which is especially convenient if your tractor is difficult to transport to a repair facility. They are equipped to handle a range of tractor issues, from engine trouble to fuel system malfunctions. By consulting a professional, you can rest assured that your tractor is in good hands and that the repairs will be done safely and effectively.

When it comes to fuel lines, mechanics will be able to assess the condition of your existing fuel line and determine if a replacement is necessary. They can also recommend suitable replacement parts that meet the specifications of your tractor engine. This ensures that your tractor operates efficiently and safely.

While you may be hesitant to incur the cost of hiring a professional, it's important to weigh this against the potential risks of attempting the repair yourself. Tractor mechanics have the expertise to identify and address issues correctly the first time, reducing the likelihood of further complications. They can also advise you on routine maintenance practices to help prevent future problems.

In conclusion, consulting a professional mechanic for advice when unsure about replacing the fuel line on your New Holland 1720 tractor is a wise decision. Their expertise, training, and experience can help ensure that your tractor is properly maintained and that any repairs are done safely and effectively. By seeking their advice, you can save time, money, and potential headaches, allowing you to get back to your farming tasks with peace of mind.

Frequently asked questions