So I had the fuel injectors on my L225DT pressure tested and all three barely dribble out fuel as opposed to a fine spray pattern. The fella that did the pressure test for me asked if the engine ran and i told him it actually runs quite well and only puts out black smoke when accelerating. My question is this; am i in danger of burning a hole in the pistons with the fuel coming out in concentrated drops vs. a finely dispersed mist?
Fuel Injector Replacement
- Thread starter daniel.ray77
- Start date
Poor injectors cause all kinds of damage. Burned pistons scored cylinders high exhaust temps. Just makes a mess of an engine. I am surprised it ran at all.
Ran like a champ and that's why i didn't think twice about it until it started to have a slight miss at 1200 RPM.
I'm with Dave on this one,
a good injector will spray a fine mist at it's opening pressure
a bad injector will leak at lower pressure and/or make a single stream/jet
I have an injector opening pressure tester here and an injector making fuel drops is just not fully open. ( the VW TDI are 220 bar injectors (3200psi))
Ya know, im not entirely sure if they did use the correct pressure for my injectors. What would be the correct pressure for my tractor?
Great, thanks Kuboman, Im taking them in to Industrial Injection tomorrow to have them tested again.
Let us know what you find. I am betting they break at a very low pressure. Once you get them set up you might find your IP is a little weak too.
Alight, i had the injectors retested at the correct pressure and they all popped off as they should and sprayed a nice pattern, or so the fella testing them said. That's relief. Anyone know about how many hours these injectors should run before rebuild/replacement?
Dan
Dan
Well that is good
Injectors will go thousands of hours with good clean fuel. It is usually a good idea to have the pressures checked and tips checked for spray pattern every couple thousand hours but otherwise they will go a very long time.