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50 Articles Listed

...Spark Plug specialist NGK has issued advice on plug replacement on BMW N43 and N53 engines, which were fitted with ZKBR7A-HTU NGK spark plugs as original equipment. The engines feature on the BMW 1 series and under the bonnet of a 3, 5 or 6 model. The spark plug is a semi-surface type,...

...When empty, a valve located at the bottom of the Knecht Filter KC195 filter, which is fitted to numerous diesel powered Alfa Romeo, FIAT, PSA and LDV vehicles is free to move up and down within a cage.   This valve is designed for water drainage and locati...

...Since the introduction of Controller Area Networks (CAN) in cars in the 1983, Bosch has continued to improve this method of communication between control modules. Modern vehicles have up to 70 modules communicating on various bus networks. This added complexity has  many garages runni...

...A common problem we are having with the replacement of the brakes on BMW vehicles fitted with a condition based service indicator.  When checking the condition of the brakes on the service menu, the technician then performs a brake pad reset after replacing the pads. But the problem o...

...Various electrical problems, loss of central locking, wipers, immobiliser faults, etc. We have found these can be due to water ingress into the UCH module located in the near side of the dash. Water can find it's way into this module from the sunroof and roof mounted arial. &n...

...DPF systems seem to be gathering pace in the problem list. The Zafira B Z19DT is one such call we deal with regularly. On investigation of the fault codes the DPF pressure sensor seems to be at fault, but the rubber pipes located near the DPF may have melted through. And codes for gl...

...In the past mechanics have muddled by with just a multimeter as their trusted diagnostic friend. No longer is this the case. Every day on the helpline we are asked to help with ever more complicated problems on modern vehicles, only to discover that the mechanic has only a multimeter to...

...This vehicle suffers with a poor idle quality and fault codes for high fuel rail pressure. This vehicle has a pressure relief valve located in the fuel rail. A mechanical devise to relieve over-pressure on the fuel rail. This valve has been know to fail. When removing this valve it ofte...

...  ​Recently, we have noticed a large number of garages calling the Helpline with faults logged for catalyst efficiency below threshold, only to be told the garage has recently replaced the CAT following a failure of the original part. The customer then returns a few weeks lat...

...A 1997 Jaguar XJ8 4.0 came into a subscriber’s workshop, with the customer asking for the injectors to be cleaned. Previous garages had tried to identify the cause of poor idle quality and none had been successful. The first step was to code read for any faults stored, only 1 was retr...



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