How to Clean a Fuel Pump

Most modern vehicles use sealed, filter-less pumps with screens at the pickup and a filter along the fuel line. These pumps are designed not to need maintenance and will need to be replaced if they fail. If your vehicle has an electric fuel pump, you can use a fuel system cleaner to clear any sediment buildup or blockage. If you have a manual one (usually found in older model vehicles), you can actually open the pump to clear debris out of its internal filter, though that isn’t an option in most modern vehicles.

EditSteps
EditSpotting the Signs of a Clogged Fuel Pump
Watch out for engine “sputtering” or stalling. The most common symptom of a clogged fuel pump is an intermittent power loss caused by the pump failing to push enough fuel to the injectors to keep the engine running properly. If your engine sputters or even stalls when you take your foot off of the gas, there may be an issue with your fuel pump or filter.[1]
If the engine stalls, but then will run again after a few minutes, it’s likely because of sediment building up in the fuel filter or pump. As the sediment settles, the blockage clears and that fuel will begin to flow until it builds up again.

You should also consider replacing your fuel filter.

Listen for a clicking or whining from the pump when the car idles. A clog in the fuel pump will force it to work harder to push the fuel, which can make it burn out. If you hear a clicking or whining noise from the area around the gas tank (rear of the car), chances are it’s the electric motor in the fuel pump beginning to fail.[2]
Cleaning the pump and replacing the filter may solve this problem if you catch it early, but if you allow it to continue for too long, it will burn out the fuel pump and it will stop functioning.

It’s not uncommon for the pump to click once when you turn the key, but it should not keep clicking after that.

Look for a drop in RPMs as you drive. If you’re traveling down the road at a consistent speed and the vehicle abruptly slows down or the RPMs drop significantly on your tachometer (when equipped), it may be a sign that the fuel pump is struggling to deliver enough fuel to the engine. RPMs are the number of revolutions your engine makes per minute, so a drop in RPMs represents a drop in how quickly your engine is spinning and the power it can produce.[3]
Look for warning lights on your dashboard that may indicate other potential issues to explain the power loss. A battery light, for instance, might suggest an electrical issue, or a flashing check engine light indicates that the engine is misfiring.

In the absence of those indicators, sudden (temporary) power loss is a good sign that there’s a problem with your fuel pump.

Consider if you often run the vehicle with low fuel. Gasoline tends to be awfully dirty and that sediment collects in your fuel tank. With a full tank of gas, the dirt in your tank is dispersed through a greater volume of fluid, but when there isn’t much fuel in the tank, the sediment makes up a larger portion of the fuel. Imagine a fish tank: when full, the gravel at the bottom is just a small part of what’s inside, but when the tank is almost empty, the gravel and little water that’s left occupy the same space.[4]
If you regularly drive with low fuel, there’s a higher likelihood that your fuel pump and filters are getting clogged.

Use this determination along with the other symptoms listed above to determine if there’s an issue with your fuel pump.

EditUsing a Fuel System Cleaner
Read the instructions on the bottle. While most fuel system cleaners work in roughly the same ways, there are differences from brand to brand. Read the instructions on the fuel system cleaner you purchase thoroughly to ensure you follow the right steps.[5]
You can purchase fuel system cleaner at many large retail stores as well as all auto parts stores.

Purchase fuel system cleaner, not injector cleaner. These products are similar but serve different purposes.[6]

Run the engine until you’re nearly out of fuel. Most fuel system cleaners are meant to be poured into an empty fuel tank so it can mix with the fuel you add to it after. Run your engine until the fuel gauge reads as empty or “E.”[7]
The tank doesn’t need to be completely empty and free of fuel. It just needs to be as low as possible.

Pour the contents of the fuel system cleaner into your gas tank. Open the bottle and puncture the plastic seal beneath the lid. Then insert the spout of the fuel system cleaner into the gas filler neck of your vehicle just like you normally would with a gas pump.[8]
Most fuel system cleaners come with enough for one treatment. If yours comes with more than that, read the instructions to determine how much of the bottle to add to your tank.

Gloves aren’t necessary for this task, but you may want to wear them to keep any fuel system cleaner from getting on your hands.

If you get any of the fuel system cleaner on your hands, wash them with soap and water.

Fill your tank with pump gas. The new gas you pump into the fuel tank will mix with the fuel cleaner already present. This will ensure the cleaner is properly dispersed throughout the fuel and will also help the pump to begin picking up fuel with the cleaner in it right away.[9]
Fill the tank all the way with new gas.

Use the same octane fuel you always use.

Start the engine and let it idle for a few minutes. The fuel system cleaner will flow through the fuel pump and filter on its way to the engine where it will burn along with the gas. As it passes through, it will begin to break down deposits of sediment in your fuel pump and throughout the rest of the system.[10]
Many fuel cleaners recommend letting the engine idle for ten or fifteen minutes to start letting the fuel and cleaner flow through the system before you start driving the car again.

After that initial stage, you can drive the vehicle like normal as it cleans your fuel system.

EditCleaning Mechanical Fuel Pump Filters
Disconnect the negative terminal on the battery. Locate the battery in the vehicle’s engine bay or trunk. It will look like a black box with two posts sticking out of it. Locate the positive (+) and negative (-) terminal posts and use the correct sized wrench to loosen the nut holding the cable to the negative post. Then slide the cable off.[11]
The terminals will be labeled with positive (+) and a negative (-) symbols.

Disconnecting the battery is especially important when working with fuel to ensure nothing within the vehicle can produce a spark.

Tuck the negative cable to the side of the battery to ensure it doesn’t come into contact with the terminal by accident.

Locate the fuel pump. Mechanical fuel pumps are usually found on the engine, rather than in the fuel tank, because they rely on the crankshaft to power them. Refer to an application specific repair or service manual to help you identify and locate the mechanical fuel pump in your particular vehicle, as they can vary widely in appearance and location.[12]
Most mechanical fuel pumps will have a portion that looks like a metal circle with a nozzle coming out of the top or bottom.

Mechanical fuel pumps are usually only found in older vehicles.

Place a container beneath the vehicle to catch any leaking fuel. Depending on how the fuel pump is mounted, there’s a high likelihood that you’ll spill at least some fuel in this process. Slide a container beneath the vehicle directly under the fuel pump you’ll be working on to catch any fuel spillages as you work.[13]
Make sure the container you use is rated for fuel. Gasoline can melt through some types of plastic.

Containers rated to hold gasoline will be labeled as such. If your container is not labeled, do not assume it can hold gasoline.

Remove any fuel lines only if they’re in the way. There will be two fuel lines on the pump (an in and an out). If possible, leave them in place as you open the fuel pump, but if you have to remove one or both to access the internal filter on your specific vehicle, do so by either unscrewing the lines or by loosening the hose clamps that are holding them securely on their nozzles. Once the clamps are loose, just pull the line backward off of the nozzle.[14]
Make sure any fuel draining from the line falls into the container you slid beneath the car.

If you have zip ties, you can zip tie the lines with the opening facing up to prevent any more fuel from pouring out. You’ll need to break or cut the zip ties when reconnecting the lines.

Remove the central screw or nut from the top of the fuel pump housing. There will be a nut or a bolt sticking out of the top of the mechanical fuel pump that holds the cover over the fuel filter. Find it and then use the correct sized wrench to remove it so you can access the filter inside.[15]
In some pumps, there may be a cylindrical filter housing on the top that you can unscrew by hand, instead of a bolt or nut.

Others may use pipe clips to hold the cover in place. Loosen the screws securing them or pull them off with pliers, depending on the type of clip.

Clean the filter with a brush without removing it. Look into the fuel pump to see the filter, which will look like a screen. Don’t try to remove the filter, but instead use a clean paint brush to sweep away any debris blocking the filter. You can dip the paint brush in new gasoline to make it easier for the debris to stick to the bristles of the brush.[16]
Use a medium sized paint brush to remove large and small bits of debris. The brush should be no wider than the body of the fuel pump.

Many internal fuel filters for these pumps cannot be removed.

In some vehicles, however, you can remove the filter and replace it if need be. Refer to a vehicle specific repair manual to help you determine if that’s the case for your car or truck.

Reassemble the fuel pump. Put the cover back on the fuel pump and then secure it in place using the bolt or nut you removed before. Reconnect any fuel lines that you disconnected and use hose clamps to make sure they’re tight.[17]
You can purchase replacement hose clamps at your local auto parts store if you need them.

Most hose clamps can be tightened with either a Phillips head screwdriver or a small wrench.

EditThings You’ll Need
Fuel system cleaner

Open ended or Socket Wrenches

Container to catch fuel

EditWarnings
Working with fuel can be extremely dangerous. Keep sparks and open flames away from your work area until all fuel has been cleaned up.

Wear eye protection and gloves whenever coming into contact with fuel.

Only use containers that are rated to hold fuel and make sure to label them appropriately.

EditSources and Citations
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Today in History for 6th January 2019

Historical Events

1853 – Franklin Pierce, the President-elect of the United States at the time, and his family are involved in a train wreck in Massachusetts
1893 – Great Northern Railway connects Seattle with east coast
1925 – Mussolini forms a cabinet composed entirely of Fascists in Italy
1947 – Pan American Airlines offers a round-the-world-ticket, the first commercial airline to do so
1965 – Geoff Boycott takes 3-47 against South Africa, his best Test bowling
1972 – US female Figure Skating championship won by Janet Lynn

More Historical Events »

Famous Birthdays

1903 – Boris Blacher, German composer (Orchester-Ornament), born in Yingkou, China (d. 1975)
1903 – Stanley Smith, American actor (Honey, King of Jazz, Soup to Nuts), born in Kansas City, Missouri (d. 1974)
1934 – Harry M. Miller, Australian entrepreneur, born in Auckland, New Zealand (d. 2018)
1963 – Paul Brindley, English pop bassist (Sundays, Can’t Be Sure)
1965 – Tim McDonald, NFL player (SF 49ers), born in Fresno, California
1969 – Nick A’Hern, Australian 20k walker (Olympics 22-92, 96), born in Swansea, United Kingdom

More Famous Birthdays »

Famous Deaths

1922 – Jakob Rosanes, German mathematician (algebraic geometry and invariant theory), dies at 79
1928 – Alvin Kraenzlein, American track and field athlete (4 Olympic gold 1900), dies at 51
1960 – Erik Lindahl, Swedish economist (Scope and Means), dies at 68
1960 – Edith Barstow, American choreographer (Frankie Laine Time, The Gem of the Ocean), dies at 54
1967 – Arnhem “Tata” Joseph Weiss, “the Zigeunerbaron,” buried
1981 – A. J. Cronin, Scottish writer (Citadel, Shining Victory), dies at 84

More Famous Deaths »

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How to Roast Vegetables

There are several easy steps you can take to make your veggies perfectly roasted. Cut your vegetables into equal sizes and coat them in a thin layer of oil and seasoning to bring out their best taste. When you go to roast them in the oven, it’s important to note that harder vegetables such as potatoes and carrots will take longer to cook than softer veggies like broccoli and cauliflower. When your vegetables have browned edges and soft centers, they’re ready to be eaten!

EditSteps
EditChopping and Seasoning the Veggies
Preheat your oven to . is an ideal temperature for roasting, but a temperature near this works well too. Vegetables need to be cooked at a high temperature to achieve the perfect tenderness and caramelization—if the temperature is too low, the vegetables will overcook before they reach the desired browning.[1]

Wash the vegetables before peeling them, if necessary. Rinse your veggies under cool running water to remove any dirt. If you’re chopping up garlic or onions, make sure you peel them first with your hands. Other veggies can be peeled using a peeler or knife, such as cucumbers, eggplant, or potatoes.
Chop or dice the vegetables into small sizes. While your veggies should all be around the same size once they’re cut up, it’s best to cut harder vegetables into smaller pieces than softer vegetables. This will ensure the vegetables cook more evenly, especially when they’re all together in the same tray.[2]Use a sharp cutting knife to cut the veggies into cubes or small pieces.

Softer vegetables, like broccoli and cauliflower, can be in larger pieces than harder vegetables, such as potatoes.

Add oil and seasoning to the veggies. You can place the veggies in a large bowl or a plastic, sealable bag. Pour enough oil over the vegetables so that they all have a thin sheen to them; of oil should do the trick. Sprinkle any seasoning that you like over the veggies as well, such as salt, pepper, or fresh herbs and spices.[3]Olive oil is the most common to use on vegetables, but you can also use toasted sesame oil, peanut oil or safflower oil.

Toss the vegetables in the oil and seasoning so they’re evenly coated. If you placed the veggies in a large bowl, you can use your hands to move the vegetables around, distributing the oil and seasoning evenly. If you put the veggies in a plastic bag with the oil and seasoning, seal the bag and gently shake it to coat the vegetables.[4]While you want the vegetables to be well-coated in oil, they shouldn’t be dripping.

Prepare a metal baking sheet so the vegetables won’t stick. Cover a large roasting pan with parchment paper or aluminium foil for an easy cleanup, or you can use a nonstick spray to coat the baking sheet. Metal baking sheets will help the vegetables roast evenly, and a metal sheet with low sides is important so that any water can easily evaporate.[5]The vegetables will need to have plenty of space so they roast evenly, so you may need to prepare more than one baking sheet if you’re cooking lots of veggies.

EditPlanning Your Veggie Trays
Give your vegetables plenty of space on the baking sheet. No matter how you group your vegetables, they all need enough space to roast properly. Instead of piling them on top of one another, space them out about from one another.[6]
If the vegetables are crowded too close together, they will steam rather than roast.

Spread all of the veggies on one tray to cook them all at once. If you’re short on time and want to get all of your vegetables roasted quickly, spread them all out on the tray evenly once they’re coated in oil. This works especially well if you’re cooking veggies that have similar roasting times.[7]You may need to keep a closer eye on this batch of vegetables to make sure they’re all cooking okay.

It helps to chop harder veggies into smaller pieces than the softer veggies when you combine all of them together.

Pair vegetables with similar cooking times together for better control. If you’re cooking a large group of both hard and soft vegetables, group all of the soft vegetables on one tray and all of the hard ones on another. This will let you easily remove the softer vegetables once they’re roasted and let the harder vegetables continue to cook.[8]
For example, put your asparagus and green beans on one tray and your brussels sprouts and carrots on another.

Add vegetables to the baking sheet in stages to monitor their roasting. If you want to cook all of your veggies on one baking sheet but also want them to be perfectly roasted, consider only putting the harder vegetables on the tray first. Once the harder veggies have cooked for a while, you can then add the softer ones to the tray.[9]Let your harder vegetables roast for about 10-15 minutes before adding in the softer veggies.

Roast all of your vegetables individually for perfect roasting times. This takes a bit more effort, but it also gives you complete control over how long you leave each vegetable in the oven. Roast all of your potatoes on one tray, all of your bell peppers on another, and all of your string beans on another.[10]This method works well if you’re roasting large amounts of individual types of vegetables.

Use more than one baking sheet at once, if possible, for faster and easier roasting.

EditRoasting Them in the Oven
Put the veggies in the oven once it has preheated. It’s best to wait until your oven reaches at least before putting the vegetables in to roast. If you put them in while the temperature is still low, they’ll get soggy instead of crispy.[11]
Mix the vegetables with a spatula after 10-15 minutes. Using a spatula or similar tool to move the vegetables around the pan will help promote even browning. Doing this after they’ve been roasting for 10-15 minutes is good, though if you’re roasting only soft vegetables you might want to do it a few minutes sooner.[12]This is also the time to check on your veggies to make sure they’re cooking properly.

Look for browned edges that indicate the veggies are roasted. Depending on the type of vegetable you’re roasting, this could take anywhere from 15-45 minutes after you put the veggies in the oven. Softer vegetables tend to only take 15-20 minutes to roast, while harder ones take 30-45 minutes.[13]
Soft veggies such as zucchini and eggplant will only take 15-20 minutes while harder veggies such as parsnips and sweet potatoes will take roughly 30 minutes.

Pierce a vegetable with your fork to see if it’s done. You want your roasted vegetables to be tender on the inside and crispy on the outside. Take the pan out of the oven and stick a fork into one of the vegetables. If it goes through easily and feels soft while the outside of the vegetable is a bit browned, it’s ready to eat![14]If you can’t tell whether the veggies are done or not, roast them for another 5-10 minutes just to be safe.

EditThings You’ll Need
Cutting knife

Oil (such as olive oil)

Salt, pepper, desired seasonings

Large bowl or plastic bag

Metal baking sheet

Parchment paper, foil, or nonstick cooking spray

Spatula

Fork

Peeler (optional)

EditRelated wikiHows
Make a Roasted Vegetable Salad

Make Vegan Roasted Vegetables

Cook Vegetables

Make Roast Chicken With Vegetables

Roast Brussels Sprouts

Roast Zucchini

EditSources and Citations
EditQuick Summary
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