Most symptoms of problems in a modern common rail diesel system are associated with low fuel pressure in the rail. It's incredibly common for the HPFP to fail, so much so that MINI issued a service bulletin for it. Car is its own language—luckily, we’re fluent. The second pump is the high-pressure fuel pump. In fact, the transmission filter may need to be replaced if the gears grind or the vehicle abruptly surges when shifting gears. These symptoms include the engine being hard to start, or not starting at all, rough or lumpy running at low RPM, a lack of power, and black or white exhaust smoke. These inconsistencies can cause a surge, which can be very dangerous when driving. Driving down the road, minding your own business and suddenly your car takes off like it has a mind of its own, has this ever happened to you? Our Glossary will help you learn automotive lingo and better understand each.…, Questions? They are both going to cause the same hesitation at high speed and difficulty starting. We are unable to add items to your cart from two different locations. This is called surging; this is when the car accelerates even when you have not pressed the gas pedal. Window Motor Regulator & Window Power Switch Replacement. Required fields are marked *. High pressure fuel rail: Takes the pressurized fuel and delivers it to the fuel injectors. This high pressure is needed when injecting fuel directly into the combustion chamber to ensure that the engine runs efficiently. Check the transmission fluid regularly, not just for its level, but to see if it is clean. If you find that you are unable to change gears easily or you cannot change gears at all, a problem may have developed with the transmission filter. If you have a feeling that there is something wrong, checking your transmission fluid will help you test out your concerns. While the situation may only last a moment before going back to normal for a while, this is a sign that you need to check the fuel pump in your BMW. Having trouble in these situations could be a sign of fuel pump failure. Engine Sputters at High Speeds. Generally, the rattling noise comes from filters that have become blocked with debris. It remains low at 4 to 5 bars, i.e. The only way to truly tell is to place a fuel pressure gauge on both sides of the line and get a reading from both. If you own an R56 MINI, there's a good chance you've looked up a replacement high-pressure fuel pump. We will email you instructions to reset it. Losing power when accelerating or going uphill. The fuel pump's job is pretty self-explanatory: to pump fuel from the gas tank to the engine. The function of the high-pressure pump is to move the fuel into the combustion chamber. It could fluctuate up to 7 bars and drop back to 4 or 5. Save my name, email, and website in this browser for the next time I comment. Common Rules for Sharing the Road with Truckers. However, if the filter fails to keep particles out, the transmission fluid will quickly reach a point where it is too dirty to do its job efficiently. If the transmission fluid has changed from red to brown or yellow, this is a definite warning sign. No problem! Today we don’t see the failure rate that we did, but they come in from time to time. One problem that you are more than likely to experience with your BMW is the high-pressure fuel pump failing. Different pumps naturally make different sounds, but over time you should be able to adjust to these noises while you drive. The HPFP did not obey the instruction which denotes a failure. If an account exists, an email will be sent with further instructions. The transmission filter is there to keep contaminating particles out of the transmission fluid. This is a problem that can go from bad to worse very quickly. When you are burning more fuel than necessary the fuel pump to put in more work in order to keep up. In addition, regular maintenance can ensure your engine will avoid breakdowns and other major issues. 1. This might sound like surging, but it is a little different. When the filter has become blocked with the contaminants that it is designed to filter out, it can result in a burning smell. Would you still like to change your location? This stutter or jerking is caused by the failure of the fuel pump to inject fuel into the engine consistently due to the irregular pressure in the pump. The high-pressure fuel pump in your BMW may malfunction and fail as a result of several reasons which we will discuss here! In extreme cases, it can result in the scary sight of smoke being emitted from the engine. If you are seeing any of these signs, make an appointment with us at Beyer Motor Works, today to get your fuel pump looked at – with this particular piece of your BMW’s engine it is better to play it safe than sorry. We will tell you the what, why and how the part works, as well as what to expect if you don’t fix it. It happens because when the fuel pump starts to fail, the parts will wear out at different rates creating a mismatch of combustion that causes the pressure in the engine to be inconsistent. © 2020 The Pep Boys – All Rights Reserved. It's important to familiarize yourself with the warning signs of a faulty fuel pump—that way you can address any problems before it's too late. We have just sent you an email. Here are a few signs you might have a failing diesel fuel pump and need to call a mobile mechanic in Flagstaff, AZ: These are just a few of the signs that could indicate a diesel fuel pump problem, so for more information, be sure to reach out to a mobile mechanic in Flagstaff, AZ. Once this issue has been detected, you should take your BMW in for servicing as soon as you can. If start to hear a rattling sound while driving, you should stop to check the transmission. This is when the engine stutters in the process of acceleration, the pump is likely to be failing, almost like the engine is stuttering. See the steps we are taking. This is a failure that I was replacing regularly a few years ago. If you notice varnish on the transmission dipstick, you may have a faulty transmission filter. Poor performing or low grade filters can allow dirt and harmful contaminants into the engine, causing harm to your car. The fuel pump's job is pretty self-explanatory: to pump fuel from the gas tank to the engine. There are a variety of factors that can cause problems with your fuel pump, and depending on the symptoms that they pump is showing, it may or may not be easy to figure out exactly what the problem is and find a relevant solution. If a defect has developed, it will either need to be replaced or the fasteners will have to be tightened. High pressure fuel pump: Also known as the VST pump, it pressurizes the fuel before sending it to the fuel rail. The high-pressure fuel pump in your BMW may malfunction and fail as a result of several reasons which we will discuss here! One sign that is a good indicator that you fuel pump is failing is when you have difficulty accelerating, going uphill or carrying heavy loads all require the car to burn more fuel. Normally your car should shift easily into each gear, but if your transmission hesitates to shift, then there is most likely an issue. Why Is It Important to Check Your CV Boots Regularly. Have you ever tried to start your car and the lights all come on and you can hear the engine trying to turn over, but nothing happens? Your vehicle should never run out of gasoline—keeping appropriate fuel levels will make sure your vehicle functions as it should and prevents your fuel pump from having to deal with an unnecessary amount of strain. It's important to familiarize yourself with the warning signs of a faulty fuel pump—that way you can address any problems before it's too late. The N14 engine found in the R56 is a Prince engine, which is part of the Peugeot, Citroën, and BMW family. ON HOT ENGINE-Plug your scanner and go straight away to the measured common rail pressure. Two of the most common causes of diesel fuel pump failure are consistently low gasoline and engine breakdowns. Your car is the sum of it’s many, many parts. If this fuel pump begins to malfunction, then your BMW will not run as efficiently as you are accustomed.