I am still tring to find out info on why this 6.9 is stalling after running
for 15-20 minutes. I have checked the cylinders and replaced the glow plug
relay. It runs good when it is started as well as when your driving, but
after 15-20 minutes it dies. I am at a loss. Any suggestions?
use freeze spray on all the electronics,once it dies,and see if it works.you can get it from a MG chemicals distributor.WHAT ABOUT THE EGR VALVE. the only other thing i can think of is the fuel system.
hows the compression when it hot, not an easy thing to test but they had a headbolt problem that caused the heads to warp and loose compression when hot, the bolts bottom out when torqued instead of holidng down the head, gave that motor a real bad rep
That could be, I have seen a similar problem in another Ford, if the fuse for the glowplug is blowing then it might be a problem with the injecor pump.
The glow plug ckt is only used at startup, when the engine is cold. about
10seconds. If it runs much longer you can melt the ends off the glow plugs
and damage the engine.
Does it die.....like you turned the key off or does it sputter and die like it runs out of fule(actually revs). Will it restart right away?? does it smoke blue??
Answering these will lead you to the solution. Diesels are a lot simpler than gas. :wink2:
See what happens if you run it with the fuel tank cap removed. Does it
still die then? I've seen this with several F-series 6.9L diesels -- the
problem that I've seen is blocked (or partially blocked) venting in the
fuel filler cap. This causes a vacuum condition in the fuel tank as fuel is
drawn out, leading to engine stalling from fuel starvation.
Interestingly enough, this was also a common problem on older VW diesel Rabbits and pickups.
Try Changing the crank sensor i Had a 2000 7.3 Doing the same thing