fact is, they really are VERY clean when you cut one open.ĭiesel fuel filters, changed too often? - gordonbennet I have no serious intention of leaving the Derv filters.but. I change the *oil* filters at half the normal interval and this is just debate really. The way I see it is that the filter medium would gradually become more efficient as the mileage increased and as for water, have found less than half a teaspoon in around 400,000 cumulative mileage in the family fleet. This one was 50% past its specified change interval based on the empirical evidence of the last 15 years servicing the family diesels. Wish I had the equipment to measure the flow and back pressure in one, at new and then at extended mileages.įunny what you develop an interest in =) But I last did this about 12 years ago with a Prima in a Maestro and the result was the same.īut has anyone seen a Derv filter run up to an extended mileage without being touched? I actually felt I had gained nothing from the change and that I might as well have left it alone. Drained and `opened` the canister type fom one car at the service yesterday, it was clean inside and not one drop of water. I have suspected for a long time that diesel fuel filters have an easy life using normal pump fuel. With due apologies for touching on this topic before,I have cut another fuel filter open for examination. Make sure you use safety equipment as fuel can be very dangerous.Diesel fuel filters, changed too often? - oilrag However, some car models can be tricky and you will have to rely on a repair manual. You can change the filter yourself with just some basic knowledge. The ECM will throw a lean air-fuel mixture or misfire according to the trouble codes. If you have a clogged filter, replace it before causing complete engine failure.Ī clogged fuel filter will cause error codes. You could create all sorts of issues from decreased performance to higher emissions. If the filter is clogged, fuel cannot flow through the system. Your car’s fuel filter is in place to keep contaminants out of the fuel system. Can I drive with a clogged filter?ĭo not drive with a clogged fuel filter. Even if you have the filter changed during regular maintenance, it’s a good idea to just go ahead and change it again. These filters are very inexpensive so trying to save a few coins can only lead to more problems. Have Regular MaintenanceĪlthough some people will clean the filter using compressed air or water, it is not recommended. If all else fails, consult your local garage. You can also check in the engine bay near the fuel tank under the car. Its location can differ so your best bet is to check your owner’s manual. It can be located under the hood or somewhere behind the plastic covers under the car. The fuel filter is usually located near the fuel tank under the car. Some countries have really bad fuel quality which means you will have to change the filter more often. This also depends on the type of fuel you are using. Most cars have a replacement interval of up to 75,000 miles (121,000 km) before having to change the filter. While some models of cars have to replace the filter more often than others. In all reality, the fuel filter should be replaced every 37,000 miles (60,000 km) every 4 years.Ĭars running on petrol will have a longer replacement time and will not get clogged as often as diesel filters. When the filter should be changed will vary from one model of car to another and the type of fuel you are using.
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