Facebook LIQUI MOLY Poland Write to us First name and last name E-mail adress Message Powered by ChronoForms - ChronoEngine.com TECHNICAL INFORMATIONS JET CLEAN TRONIC CLEANING THE PARTICLE FILTERS PRODUCT SEARCH HOTLINE CHOOSE OIL The LIQUI MOLY guide will help you choose the right oil for your engine! DOWNLOAD THE CATALOG Cleaning common rail injectors Created: 27 April 2017 Buy now The modern diesel engine covers the first 100,000-150,000 kilometers without failures. Later, problems with louder operation, smoking or increasing fuel consumption begin. If we do not react properly to such symptoms, a more serious failure may occur. Black smoke from the exhaust pipe, uneven engine operation are the first symptoms that should be addressed. Art.no.2666 Common rail injectors in diesel engines mainly suffer from two types of problems: leakage of the control valves due to wear, and dosing and spraying errors due to contamination of tips and bodies. While in the first case the solution is only to replace or regenerate the valves, the problems of the second type can be solved by chemical cleaning. Photo no. 1 Nozzle openings at the injector tip before cleaning. Photo no. 2 The injector tip sprayer holes after cleaning. Basic diagnosis of common rail injectors is possible without disassembly from the car. The so-called overflow test allows you to diagnose leakage of the control valves, while reading the injectors' corrections allows you to detect, among other things, irregular dosing. Too large overflows are usually caused by the manufacture of control valves, while many problems with dosing and spraying, especially at low revs, may be caused by contamination of the injectors. In many cases, the removal of carbon deposits is successful with the use of an appropriate preparation supplied with the fuel. The liquid is poured directly into the fuel tank, and a 500 ml package is sufficient for 70 liters of fuel. The cleaning process takes place while the engine is running, which means that the solution is fed in all possible engine operating conditions, in a wide range of temperatures and pressures. Cleaning the injection system lasts until the fuel containing the detergent solution is used up and does not require any additional treatments. The cleaner is able to remove contaminants, improving the accuracy of fuel dosing. In practice, the most problematic are deviations of idle doses, where due to short injection times, even small deposits strongly disturb the amount of injected fuel. It is here that the agent has a chance to be most effective, stabilizing the idle run, reducing vibrations and unevenness of operation, and also facilitating starting. The effectiveness of the preparation can be verified with a diagnostic tester, comparing the corrections of the injector opening times before and after cleaning. Środek do czyszczenia wtryskiwaczy o numerze 2666 jest bardzo skuteczny, ale przede wszystkim bezpieczny dla silnika. Należy mieć świadomość, że jego działanie opiera się na czyszczeniu osadów. Z oczywistych względów nie jest możliwe przywrócenie do pełnej sprawności wtryskiwaczy zużytych mechanicznie, z uszkodzonymi zaworami itp. Jednak w znacznej części przypadków to właśnie osady odpowiadają za kłopoty z pracą silnika wysokoprężnego. Problemy tego typu nasiliły się szczególnie od czasu, gdy zgodnie z przepisami, do paliw obowiązkowo dodawany jest tzw. biokomponent FAME, którego udział nie jest obojętny dla pracy układu wtryskowego i utrudnia wykrycie pierwszych niesprawności układu wtryskowego. Dlatego Dodatek do czyszczenia układów wtryskowych powinien być stosowany prewencyjnie, ponieważ zanieczyszczone wtryskiwacze mogą doprowadzić do przedwczesnego zapychania się filtra cząstek stałych, uszkodzenia koła dwumasowego lub usterki mechanicznej wtryskiwaczy. Dodatek należy stosować regularnie przy każdym przeglądzie lub dwa razy w roku. Photo no. 3 Measurement of injectors' correction before applying the preparation. Photo no. 4 Measurement of the correction after cleaning the injectors. Company | Products | News | You Tube | Google+