Focus ST Low Pressure Fuel Line Install Guide
If you've ever had to deal with removing the factory low pressure fuel line on the Focus ST, you'll quickly realize why we decided to make a better line. The factory line can be a nightmare to remove, due to the type of quick connect fittings used. Either specialty pliers or low-profile fuel disconnect tools are needed to remove this line. Even then, on older/higher mileage STs, the factory quick connector plastics can deteriorate and crumble, making the line either impossible to remove again or even leak.
We've solved all that.
New from Damond Motorsports for the Focus ST, our Low Pressure Fuel Line Upgrade! This line is constructed out of a E85 safe viton hose with a inner stainless braid and outer nylon braid, with high quality reusable hose ends at either end. We utilize a very low-profile 90° fitting for the HPFP end to allow clearance for whatever intake you wish to run. On the other end we use a easy to squeeze quick-connect fitting, making for removal and servicing a breeze.
WARNING:
By installing this Product, you understand that:
The buyer/user assumes all risk as to quality, performance and use of these products and agrees to hold DD2, Inc. DBA Damond Motorsports (“DM”) and its representatives not responsible for any injury, loss, or damage; including any and all incidental or consequential damages arising from the sale, installation, or use of our products.
Many parts are intended for “OFF ROAD ” and “RACING” applications only. It is suggested that State and Federal emission regulation be checked, to see whether or not this product complies with those laws. Read through the instruction guide thoroughly, before attempting this install. Do not install any components while the engine is running or shortly after the car has been running. Give the car some time to cool down. Failure to install this product correctly, or failure to remove/reinstall existing components correctly, could result in poor running conditions, or even component and engine failure, which the sole user of this product is responsible for. The install instructions are intended to guide you on how to install this product properly. Only an experienced mechanic should perform this install. In addition, DM, and its representatives reserve the right to modify and or discontinue parts without notice. If you the user/buyer of this product do not agree with the above, contact DM immediately, to discuss a possible return of our product for a full refund minus shipping costs, and other fees.
Tools Needed:
- -6 AN wrench (or 11/16" wrench)
- Adjustable AN wrench (or 5/8" wrench)
- Fuel Line disconnect tool or pliers
- 10mm socket
- 8mm socket
- 7mm socket
- Socket wrench
- Rags
Start by first relieving the fuel pressure. To do this you will pull fuse 56 within the interior fuse panel located in the passenger footwell. Once this fuse is removed, start the engine and let it idle until it dies. Attempt to start the engine 1-2 more times, to ensure there's no fuel pressure in the system.
Next remove the battery cover and disconnect the negative battery terminal from the battery.
Remove the intake pipe going over the engine, by loosening the 2 hose clamps at either end of the pipe and the 8mm bolt securing the intake pipe to the engine. If you have an aftermarket intake, please refer to the manufacturer's instructions.
With the intake pipe removed, locate the factory low-pressure fuel hose coming from the hard line near the firewall under the brake fluid reservoir and the other end attaching to the high pressure fuel pump, aka "HPFP"
Place a rag under the line to help absorb any fuel spillage.
Remove the hose by depressing the black plastic connectors on the pipe fitting, and pulling the hose from the fuel pump and fuel line. These connectors can be tricky to remove, especially if the car has high mileage. Alternatively a low-profile fuel disconnect tool can be used to remove this line. In a punch some tiny screwdrivers under the fitting could be used to free it.
With the line removed the Damond line can now be installed. This line can be installed with the straight fitting on either end, but we recommend the straight fitting on the hardline side. Due to limited access, we recommend first tightening the hardline quick-connect fuel fitting to the line, as shown, and tighten to 13-16lbs/ft or 17-22Nm. Loosely tighten the angled hose fitting to the other fuel fitting. This will be finally tightened once in place on the car.
Remove the tiny Allen head bolt and green clip from the fuel fitting.
Install the quick-connect fitting onto the hardline by pressing the fitting onto the line. You should hear a click once the line is secured. Gently pull on the line to ensure it won't come off. Place the other fitting onto the HPFP spigot. Secure this fitting with the green clip and Allen bolt removed earlier. Gently pull on the line to ensure it won't come off. Using a wrench on the flats of the fuel fitting, hold it in place while tightening the hose fitting to 13-16lbs/ft or 17-22Nm.
Remove the rag from the engine and re-install the intake pipe, or any other components removed to install the fuel line.
Reconnect the battery and reinstall the fuse removed earlier.
Before starting the car, prime the fuel system by pressing the ignition key to the on position. DO NOT START THE CAR. Repeat this 2-3 times, and inspect the fuel line for any leaks. Once no leaks have been confirmed, start the car and let it idle why you continue to inspect for leaks.