John Deere Stanadyne Injection Pump Troubleshooting Powertech 4 5l & 6 8l Diesel Engines Level 12 Electronic
There may be error codes by doing this but it proves a point in testing. You can't use the old method of cracking each injector line to narrow it down because the injector pump doesn't have a pump for each cylinder. We have seen the tone wheel on the crankshaft come loose causing erratic engine speed readings that can cause issues.
Stanadyne Injection Pump Troubleshooting
The de10 pump derives all if its injection timing information. If the motor runs ok with this line off then the line is plugged. If it is advancing too much, you get the.
Also Read:
Insufficient fuel supply, replace fuel filter.
Watch curtis discuss the possible issues with c & c. It contains 6 sections that describe the pump's construction, operation, disassembly, cleaning,. The document provides troubleshooting tips for various issues that can occur with stanadyne fuel injection pumps, including starting and stalling issues, no start conditions, low power, smoke. There are other issues which will prevent the engine.
I usually load it up with appropriate software to test. Insert the pump timing pin (p/n 40610) into the hole. Clean the exterior of the injection pump and. The sensor is supposed to retard the timing and then advance timing as engine warms.
All stanadyne db4 and most db2 injection pumps will have a retained drive shaft (shaft stays in the pump when pump is removed from engine).
Either the sensor is bad, or the injection pump is out of time. Some of the tests on this system should be done using john deere service advisor software connected. However there are a lot of tests that can be done as well before having to connect. The document provides information about an electronically controlled diesel fuel injection pump.
Disconnect the fuel return line at the pump. Back at it with our friends over at @c_cequipment to rebuild the de pump on their 550h john deere dozer. It's just a pressure pump. Using the included 1/4” hex key wrench (p/n 13324), remove the timing hole plug on the top of the fuel injection pump (figure 2).
