Best Fuel Pressure Gauge Hookup Spots For A Tiburon

If you want to install a fuel pressure gauge on your Hyundai Tiburon, you'll need a BSPT adapter to screw into the fuel rail, and then you'll screw in the sender. However, it's not clear how the part of the fuel rail connects back on. One user on a forum suggests that you can either drill directly into the front rail and put the sender there, use a block like a TC T for the fuel line, or remove the cap on the rear rail, insert the fitting, and put the sender (if the rear rail isn't sealed off).

Drilling into the front rail

Step 1: Purchase the Required Adapter

Before you begin drilling, you will need to purchase a BSPT (British Standard Pipe Taper) to NPT (National Pipe Thread) adapter. This adapter is typically a 1/8th BSPT to a 1/4th NPT and should cost around $14. This adapter will allow you to connect the fuel pressure gauge to your fuel rail.

Step 2: Drill into the Front Rail

Using appropriate drilling equipment and safety measures, drill a hole into the front rail of your Hyundai Tiburon. Make sure the hole is large enough to accommodate the adapter and the sender unit of the fuel pressure gauge.

Step 3: Screw in the Adapter

Once you have drilled the hole, screw in the BSPT-to-NPT adapter into the front rail. Ensure that it is tightly secured and properly aligned.

Step 4: Attach the Sender Unit

With the adapter in place, screw in the sender unit of the fuel pressure gauge. The sender unit is the component that will read and transmit the fuel pressure data to the gauge for display.

Step 5: Reconnect the Fuel Rail

Finally, reconnect the fuel rail to the sender unit. There may be black attachments on the sender that need to be removed first. Secure all connections and ensure there are no leaks.

Please note that drilling and tapping is considered a very difficult procedure, and it is recommended to consult a professional or a mechanic if you are unsure about any steps or have limited experience with automotive modifications.

Using a block like TC sells

If you want to install a fuel pressure gauge on your Hyundai Tiburon, one option is to use a "block" like the one sold by TC. This block is essentially a T-shaped fitting for the fuel line. You can insert the fitting into the fuel line and then screw the gauge into the fitting.

Here's a step-by-step guide on how to install a fuel pressure gauge using a block:

• Purchase a suitable block or T-fitting for your fuel line. The size of the fitting may vary depending on your vehicle, so make sure to consult a mechanic or a specialist before purchasing.
• Locate the fuel line: The fuel line is usually connected to the fuel rail, which is the metal tube that carries fuel to the injectors.
• Disconnect the fuel line: Before you begin, make sure to relieve the fuel system pressure and absorb any spilled fuel with a clean cloth.
• Cut the fuel line: You will need to cut the fuel line to insert the T-fitting. Make sure to cut the line in a straight line to ensure a good seal when you reconnect it.
• Prepare the T-fitting: Clean the cut ends of the fuel line and the T-fitting with a suitable solvent to ensure a strong connection.
• Insert the T-fitting: Place the T-fitting into the fuel line, making sure it is securely seated and aligned correctly.
• Reconnect the fuel line: Reconnect the fuel line to the fuel rail, ensuring a tight and secure connection. You may need to use new clamps or hoses to ensure a proper seal.
• Screw in the fuel pressure gauge: Once the T-fitting is in place, screw the fuel pressure gauge into the appropriate port on the fitting. Make sure it is tightened securely.
• Test the installation: Before starting the engine, check for any fuel leaks and ensure that all connections are secure. Once you are satisfied, start the engine and observe the fuel pressure gauge to ensure it is functioning correctly.

Remember, working on fuel systems can be dangerous, and it is always recommended to consult a qualified mechanic or technician if you are unsure about any part of the process.

Removing the cap on the rear rail

To remove the cap on the rear rail of a Hyundai Tiburon, you will need to locate the fuel rail. This can be found by following the fuel lines from the fuel tank to the engine. Once you have located the fuel rail, you can remove the cap by following these steps:

• Place a drain pan under the fuel rail to catch any spilled fuel.
• Loosen and remove the fuel cap.
• Locate the rear rail cap. It is usually located at the end of the fuel rail.
• Using a suitable wrench, loosen and remove the rear rail cap.
• Set the cap aside in a safe place.

It is important to note that working with fuel systems can be dangerous, and it is always best to consult a qualified mechanic or seek professional assistance if you are unsure about any part of the process. Ensure you are in a well-ventilated area and take the necessary precautions to avoid any fire hazards.

Once the cap has been removed, you can proceed with installing the fuel pressure gauge. In this case, you would screw in the BSPT adapter to the fuel rail, followed by screwing in the sender. The fuel rail end can then be attached to the sender, and the whole setup can be screwed back on.

Attaching to the end of the fuel drain tube

Attaching a fuel pressure gauge to the end of the fuel drain tube is a straightforward process, but it's important to take the necessary precautions to ensure safety and avoid leaks. Here's a step-by-step guide:

• Prepare the Hose: Obtain a hose that is long enough to reach from the fuel drain tube to the driver's side tow mirror support. This will allow you to monitor the fuel pressure at wide-open throttle. Ensure that the hose is diesel-rated to withstand the heat and pressure.
• Attach the Hose: Connect the hose to the end of the fuel drain tube, where you would normally attach a hose for draining the fuel bowl. Secure the hose with hose clamps on both ends of the connection to prevent leaks.
• Check for Leaks: Before starting the engine, open the drain valve and carefully check for any signs of leaks. It is crucial to ensure that the connection is secure and leak-free.
• Test Drive: Once you have confirmed that there are no leaks, start your test drive. Monitor the fuel pressure gauge attached to the mirror support during your drive.
• Adjust Length: After your test drive, you can leave the hose connected to the drain tube. Cut the hose to an appropriate length so that it can be conveniently used whenever you need to drain the fuel bowl in the future.

Remember, this method provides a quick and temporary solution for attaching a fuel pressure gauge to the fuel drain tube. For a more permanent solution, you may need to explore other options, such as accessing the test port on the back of the filter housing or using a "block" like the one mentioned in the Hyundai Tiburon Forums. Always refer to your vehicle's manual or seek professional assistance if you have any doubts or concerns.

Adding to the test port on the back of the filter housing

To add a fuel pressure gauge to the test port on the back of the filter housing of your Hyundai Tiburon, you will need to remove the test port plug using a 3/16" Allen wrench. You can then screw in a fitting that will accommodate your fuel pressure gauge. This fitting may be the hardest part to source, but you can find various test port fittings on the Guzzle's website, which can be used as a starting point.

Once you have the correct fitting, you can attach the fuel pressure gauge to it. Ensure that the gauge and hoses can withstand the heat and that the setup is secure to prevent leaks. You can then mount the gauge on the passenger wheel well or in the plastic filter cover to monitor the fuel pressure at idle every time you open the hood.

This method provides a convenient way to access the fuel pressure readings without having to hang a diagnostic gauge out of the hood. It also allows you to leave the gauge connected for future use, making it easier to monitor and troubleshoot fuel pressure-related issues.

Remember to consider the specific model and year of your Hyundai Tiburon when sourcing parts and fittings, as there may be variations between different models.

Frequently asked questions