I badly need the complete wiring schematic for my 2005 ford f350 Super Duty 6.0L. I have done all troubleshooting I can and even fitted new pump.Serviced all filters, but still wont start.The injectors are not introducing fuel into the cylinders.Crank or turns over fine, but their is no fuel getting into the cylinders, oil pressure is good.How do I get power to the injectors to get them to introduce fuel?They all seem completely isolated.How I do I reset computer without the WDS or IDS? Please help, If I can get a wiring schematic maybe I will be able to see the place where the power to the injectors is getting cut off.After tests and mesaures numerous time we have found that the injectors are not getting any electrical power? Help Herman Very Urgent! Truck has been down since 4th January and Its here in zimbabwe ,Africa and the nearest place for warranty is 1600miles away and I cannot tow that vehicle that far
All pre 2008 powerstrokes use oil pressure supplied by a High Pressure Oil Pump(HPOP)to activate a plunger setup in the injector to inject fuel into the cylinders at 21 PSI. More than likely some of the HPOP components need to be replaced- i.e. valve, regulator, seal, feed tube...or the pump itself. I've replaced seals on these units since 2003, when Ford wanted to replace the pump and injectors. Did you notice a gradual increase in hard starting conditions? Do you have any visable oil leaks? Did you run the crankcase oil level down to below the add mark recently? All of these could be a factor. Ford wont tell you anything about a price because they dont like to do that before they do a diagnostic check on it and determine exactly how much needs to be fixed. Test alone will run around 100 buxs. If you are within warranty requisites then it wont matter and you likely wont be charged anything. If they crack into it have em fix as much as you can while theyre in there, because after warranty is out you are looking at a 3000 dollar repair bill from your friendly Ford dealer. Good luck...i hope this helps.
490 views
Usually answered in minutes!
They buzz, and I have new oil in the sump and the quantity is correct also.I have gone through the oil pressure route and verified that I have correct oil pressure.When the engine is turning over the presure gage goes up above 50% and drops after about four seconds
maybe thats where im gettin confused, can you please give me the procedure to check the high pressure system,because I thought the oil system was just one .Please walk me through what I need to do to check the high pressure oil system.Or better still please explain the difference between the two systems and how to check them and how to correct them
I do not have access to a scan tool and also the special adaptor you mentioned that goes in where the oil pressure sensor is.What causes the oil pressure to drop besides oil leaks?
do you have access to a scan tool? you can monitor the oil pressure sensor. there is a special adapter the goes in where the pressure sensor is in the pass side valve cover to test the pressure. The way it works- the low pressure base oil system that lubricates the engine also feed the high pressure system- the high pressure system needs a min of 600psi to fire the injectors
did you check the low oil pressure or the high pressure system?
do the injectors buzz when the key is first turned on?
the injectors require oil pressure to open, you might have an oil pressure concern not an electrical concern
×