Tip & How-To about Ford F-350
Well there really is no easy way to test injectors without a $20k flow jet machine.
The only thing you can do on your end is pull the one valve cover off at a time and run the motor (don't worry it doesn't spit as much oil as every one says and it's not messy at all) just wear your safety goggles. This is also the time to change the glow plugs if you haven't done so ($60 for a set of 8) and check all wiring and connectors for wear burned pins.
Once motor is started See if all injectors are cycling the correct amount of oil (from the oil deflector tubes). each injector should spit oil after it fires and if one is spitting less or not at all it's bad/worn or your valve cover harness has a melted pin or even possibly an IDM wiring/module issue. I would do that first to see if any injectors look out of place as its the cheapest, then you can start to diagnos why its not firing.
Other then that you can have a buzz test done (for about $20-$25 at any auto shop some do it for free) and see if all the solenoids are at least operational and that the circuits to each injector is functional.
I also had 1 burned pin under the valve cover and its not frequent that it happens but not uncommon to have one or two every now an again. If you want them all tested most local places charge about $25-$35 per injector to test so $200-$280 for all 8 and they will let you know if they're good/bad etc and most can rebuild if neccessary..
Posted by James... on
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