Had a service done the other day and the guy said the oil was taking a while to get to pressure. Today the vehicle has completely failed with the ems light on. A quick web search suggests the high pressure diesel pump has failed. Is this the same thing?, and is this likely to be a hefty failure?. Peugeot boxer 2.2 hdi 2007. Any help appreciated, thanks
Peugeot boxer high pressure pump
- Thread starter ollski
- Start date
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Just allow me to stick my neck out for a bit......
Some diesel engines require high lubricating oil pressure to build before the injectors will open......this is why a cold start isn't absolutely instant, it takes a second or two of cranking before the thing will go. This used to be a huge issue with the Izuzu common rail engine as found in the Trooper.
The diesel fuel however is pressurised to a huge degree, and fed into the 'common rail' (pipe, for want of a better explanation) where each injector receives its fuel supply.
So - we are talking about two different things here 1)The lubricating oil pressure generated by the engine, which is determined by the condition of the engine, together with the oil quality and filter 2) The performance of the high pressure fuel pump, driven by the timing belt, often enough.
I think you need to find a diesel specialist who can measure the pressure of both pumps, but my guess would be the diesel pump which unfortunately ain't cheap
The high pressure pump always puts the EML on when it is faulty, if the lube oil pressure is down, then it often doesn't.
John
Some diesel engines require high lubricating oil pressure to build before the injectors will open......this is why a cold start isn't absolutely instant, it takes a second or two of cranking before the thing will go. This used to be a huge issue with the Izuzu common rail engine as found in the Trooper.
The diesel fuel however is pressurised to a huge degree, and fed into the 'common rail' (pipe, for want of a better explanation) where each injector receives its fuel supply.
So - we are talking about two different things here 1)The lubricating oil pressure generated by the engine, which is determined by the condition of the engine, together with the oil quality and filter 2) The performance of the high pressure fuel pump, driven by the timing belt, often enough.
I think you need to find a diesel specialist who can measure the pressure of both pumps, but my guess would be the diesel pump which unfortunately ain't cheap
The high pressure pump always puts the EML on when it is faulty, if the lube oil pressure is down, then it often doesn't.
John
More likely to be a faulty diesel pump or possibly sensor?. Guessing if I disconnected the sensor and it runs can only be sensor error?
I only saw the notes he wrote on the service an it said something like 'oil slow to reach pressure' and advised investigation
I only saw the notes he wrote on the service an it said something like 'oil slow to reach pressure' and advised investigation
Maybe the mechanic noticed that it took a second or two for the oil pressure light to extinguish.....? It may be worth going back to the garage and asking what he meant.
There's nothing to stop you disconnecting the odd sensor around the common rail, but normally this would only hinder any attempt at start up. It would also produce more fault codes which would need to be cleared. Anyway, your van is now showing a fault code because the EML is on, and this needs to be interrogated by an appropriate fault code reader which could point you in the correct direction. The engine doesn't need to run for this.
John
There's nothing to stop you disconnecting the odd sensor around the common rail, but normally this would only hinder any attempt at start up. It would also produce more fault codes which would need to be cleared. Anyway, your van is now showing a fault code because the EML is on, and this needs to be interrogated by an appropriate fault code reader which could point you in the correct direction. The engine doesn't need to run for this.
John
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