Tuesday, April 1, 2014
How to Install a New Injector in a 4 9L Ford
The most recent use of a 4.9-liter engine in Ford vehicle is in F-150 pickup trucks made from 1987 to 1996. This is a six cylinder gasoline engine, which requires the fuel injectors to deliver fuel to the engine under high pressure. The installation of a new fuel injector for a 4.9-liter Ford engine requires you to remove the entire fuel rail assembly. This procedure is generally the same for all Ford trucks with a 4.9-liter engine made since 1987.
Instructions
- 1
Disconnect the cable on the negative battery terminal with a socket wrench to reduce the possibility of a spark while replacing the fuel injectors. Open the filler cap on the fuel tank to relieve the pressure in the tank. Remove the cap for the fuel pressure relief valve on the fuel line and connect MFI Pressure Gauge T80L-9974-A to the valve. Open the pressure gauge to relieve the pressure in the fuel lines and replace the valve cap.
2Disconnect the upper intake manifold assembly from the engine with a socket wrench. Remove the mounting bolts for the fuel rail and disconnect the fuel rail from the engine. Unplug the electrical connector for each fuel injector.
3Rock the fuel injector back and forth as you pull up to remove the fuel injector from the fuel rail. Remove and discard any damaged O-rings from the fuel injector.
4Coat the new O-rings with clean engine oil and mount them to the new fuel injector. Install the new fuel injector into the fuel rail by gently rocking it back and forth.
5Attach the electrical connectors for the fuel injectors, and install the fuel rail with the socket wrench. Replace the upper intake manifold and connect the cable to the negative battery terminal.
Tuesday, November 5, 2013
How to Reset the Tire Pressure Monitoring System on New Wheels
Correct tire pressure is very important. If you dont check your air pressure, you could be driving on a low tire, which increases the odds of a blowout. Many accidents are caused by tire failure, and many tires that fail do so because of low air pressure. One fantastic new system available on most new cars is tire pressure monitoring, also known as TPMS. When youve installed a new tire, it is sometimes necessary to reset the system.
Instructions
- 1
Drive the car at freeway speeds for 50 miles. Many vehicles can be reset just by driving the car. If this does not work, move on to the next steps.
2Take out your TPMS scanner. Most of the scanners work in the same fashion. Become familiar with how your TPMS scanner works. Notice that the scanner has a menu button and a selector to select your model car. Select your car and follow the prompts on the screen to reset the TPMS units.
3Reset the tires on the car one by one. This will require you to walk around the car to each tire and push the reset button.
Monday, October 28, 2013
How to Replace or Buy a New Engine
If you love your vehicle but your engine has gone bad, you may consider replacing the engine instead of buying a new car. The body of your car can last indefinitely and it may be more cost effective to buy a new engine if key components such as the transmission are in good condition. When your options are replacing an engine or junking a car and buying a new one, an engine replacement may be your best bet.
Instructions
- 1
Confirm that your old engine is beyond repair, or is going to cost so much to fix that you may as well replace it. Some engine problems can be repaired, and you should do so if it is feasible.
2Research your engine options. Your vehicles make and model will determine the engine you need, but you can opt to buy a refurbished engine, an engine from a salvage yard or a brand new factory direct engine. Dont attempt to buy an engine from a junk yard unless you are a qualified mechanic. Rebuilt engines are often as good as new, but a brand new engine from your cars manufacturer is ideal. A new engine is the most expensive option, however.
3Buy the engine. Do not try replacing the engine yourself unless you are mechanically inclined and experienced. Otherwise, you risk costing yourself even more money when you have to take your car to a mechanic to complete the project.
4Have the car and engine delivered to a trusted mechanic. You can purchase the engine yourself and supply it to your mechanic, who will then perform the replacement for you. Make sure there is oil in the new engine before starting it for the first time or you can damage the new engine.
Friday, September 20, 2013
How to Prepare Brand New Lifters
Although valve lifters do not often go bad, sometimes they do fail and need replacement. When a lifter does fail, the replacement lifter must be properly prepared and pre-load tested before being put into service. Following the proper procedures to test and prepare a brand-new lifter prior to normal operation is required to validate the warranty by most lifter manufacturers. Proper lifter preparation will not only help prevent lifter or camshaft failure in the first few minutes of operation, it will ensure countless hours of dependable valve lifter performance.
Instructions
- 1
Apply cam lube to the external surfaces of the lifter as well as the lobes of the camshaft for non-roller cams. Fill the push rod seat of the valve lifter with motor oil. Use a high quality non-synthetic oil to coat all the lifter surfaces when a roller cam is used.
2Install the rocker arms and set the initial valve lash, following the procedures in the manufacturers service manual.
3Rest a scribe on the valve cover gasket surface of the cylinder head. Scribe a mark on the push rod that is seated in the new valve lifter.
4Remove the rocker assembly from the cylinder head, following instructions in the engine manufacturers shop manual, but do not remove the push rod.
5Scribe another mark below the first mark on the pushrod after removing the rocker assembly, using the valve cover gasket surface of the cylinder head as a reference point. The difference between the first and second marks is the pre-load distance.
6Adjust the pre-load distance, if necessary, by using either longer or shorter pushrods to ensure that the pre-load distance is within the lifter manufacturers specifications. Repeat the procedure for all new lifters.
7Reinstall the rocker arms and reset the initial valve lash after the preload test, completing the preparation of the new valve lifter.
8Prime the engines oil pump, following the instructions in the engine manufacturers shop manual. Fill the oil filter with fresh non-synthetic motor oil to ensure proper lubrication on start-up.
9Complete the reassembly of the engine, following the procedures in the manufacturers shop manual. Fill the engine with 30-weight engine oil, and the radiator with engine coolant.
10Fill the carburetor float bowl with gasoline, or prime the injector pump to facilitate fast engine start-up, ensuring that engine oil reaches the new valve lifters as rapidly as possible.
11Start the engine and reset the valve lash, if necessary, and the ignition timing following the instructions in the manufacturers shop manual. Perform initial break-in procedures for new lifters following the lifter manufacturers instructions.
12Drain the engine oil after the engine cools off. Remove and replace the oil filter, following the instructions in the engine manufacturers shop manual. Replace the engine oil using the correct weight of non-synthetic motor oil, following the recommendations in the engine manufacturers shop manual. The lifter has now been prepared for normal operation.