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Diesel Specialists – Local Service – Worldwide Sales
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We receive a number of phone calls from people trying to troubleshoot a no start problem, after replacing the injection pump. Or they have the engine started, but it will barely run, after replacing the injection pump. We provide an overflow valve (OFV), that the pump was calibrated with, and is installed in every rebuilt… Read more »
Low rail pressure is one of the most common cause of a limp mode in the 2001 – 2010 6.6 Duramax. DTC codes P0087, P0093 or P1093 may set due to low rail pressure. Low rail pressure could be caused by a restricted fuel filter, air in the fuel, a bad pressure relief valve, excessive… Read more »
This is not a review of specific products but includes suggestions for DIY vehicle owners to help reduce the number of parts you buy when trying to solve a problem. Read the codes, perform diagnostics, and look at the data. Good scan tools are expensive, if you are not making your living working on vehicles,… Read more »
A story of a failing rail pressure relief valve I was towing my boat to the coast for a fishing trip. The engine was running good, until I was on an uphill passing lane going around slower traffic. By the end of the passing lane, I had lost power and was down to 50 mph…. Read more »
The high pressure pump creates high pressure at low volume. Depending on the system, it is up to the high pressure limit valve, injector connector tubes, fuel pressure control solenoid and injectors to hold leakage and allow the pressure to build. A fuel supply side restriction will also cause low rail pressure. If the connector… Read more »
