Cat SDP Injector Spill Valve

Sdps and common rail cummins throw spill valve codes for a faulty injectors. Should still get it on the laptop to see if a voltage code or just a not responding code come up. Cat injector or aftermarket?

 

The SDP injector is a Delphi E3 injector so same style as Mack and Volvo unit injectors. It has a four pin connector. Spill valve is same theory as the poppet valve in older Cat injectors were closing it starts injection and opening it ends injection. There is a second actuator that is piezoelectric that controls the nozzle opening pressure. Instead of being fixed opening and closing @ certain PSI, the opening can be varied to almost 20,000 PSI. Kinda like having compact common rail set up. Anyway, like @pushbroom stated dash faults are almost useless. Need to find someone with Cat ET to get the exact code.

 

Last SDP injector we tried to get had a 1 month backorder. Ended up putting in a aftermarket one. Seemed to work ok. Had a customer install a set of aftermarket mxs injectors and the engine wouldn't turn over to complete the top set. Injector was seized solid. So much for quality reman

 

That knowledge isn't allowed here...

 

Ways around that! LOL

 

Compression is the least of your problems with the sdp .......

I wouldn’t worry about it unless your rebuilding it anyway....