Okay, I have an older thread about an excursion that is a no start, I'll revive that thread once I get some more traction, but until then...

I have a low pressure/high duty cycle no start issue, so I am finally getting around to pulling the valve covers to look for pissing injectors.

Here are my questions:

#1 Can I bump the starter with an old style button remote starter to check the injectors, or does it need to be done with the key

#2 I am under the impression I should be looking for oil to be flowing out of one injector oil spout much more than the other injectors, does anyone have a video of a stuck injector flowing oil wide open?

#3 I figure the high pressure oil delivery is mechanical, so it should try and push high oil pressure regardless of fire/no fire, is this correct?

#4 Is this so much oil that it will be splashing all over, should I mask the area off?

Anything else I should be looking for?

Thanks again,

Bill

 

You will need the key on. This will allow the PCM to tell the ipr to open up and send a good
Flow of oil to the injectors. Pretty sure there won't be a mess. There is a vid around here and you can see the leak very clearly but his truck is actually running. I
May have a vid of where to look.

 

bulla, I am pretty sure you were a big contributor to my last thread so thanks again.

I am able to put off a trip to WI next week so I am looking to get this all wrapped up. If the injectors prove faulty, it is off to single shots for me.

 

The big hole is where the oil will be coming from. Right now on your injector there is a diverter bolted on the hold down bracket. This will be on the inside side of the injector of how it sits in the motor.
Check out this video on YouTube:

http://www.youtube.com/watch?v=-wZV6...e_gdata_player


Sent from my iPhone

 

The side towards the center of the engine. My post can often be confusing! Lol!

 

Here is the vid I was thinking of but it's just an o-ring that's leaking!

Check out this video on YouTube:

http://www.youtube.com/watch?v=Fxe6w...e_gdata_player


Sent from my iPhone

 

Hey bulla, did that bad o-ring cause the no start condition?

Low pressure / High IPR cycle?

If so, I guess i've got two things to be looking for now

 

subscribing.

 

I dont have the sound on but it looks like that engine started up with that bad o-ring in there.

If you have a stuck open injector wont you get hydrolock if you try to start it?

 

For the record it's not my vid. It's joe's (csipsd). And no, it did not start, just spun a long time. I'm guessing it could be an o ring. It does make since. Consol, link your other thread so I can catch up on what's been tested. I'm guessing the vc's haven't been pulled for this event yet?

 

Here is the other link

https://www.ford-trucks.com/forums/1...ease-help.html

I've pulled the drivers side VC just to get my *** moving and will turn it over tomorrow, from the previous thread, I was left being advised #6 might be the culprit, so we'll see.

And yes, it has taken me this long to get back around to it

Thanks again

 

If you are getting low ICP with high duty cycles, I would be looking more at the HPOP. The ICP needs to see 400/500 psi to fire the injectors. With the high duty cycle, the IPR is trying close for more pressure.

 

Yeah, that is the next on the list if the injectors are good.

Some suggestions, which I think are good, were to look for an injector puking oil since it just wont let the pressure build either.

Plus as easy as pulling a VC off.

 

So, let me get this straight...

oil puking from the top = bad oring
oil dribbling from the bottom = normal
no oil = bad injector?


If that is not right is there a way to tell if its an oring or bad injector?

 

Exactly how low is the ICP and how high is the IPR while cranking? Got any numbers you can share?

There is an oil discharge spout that oil is supposed to come out of that is normal. Compare each injector to the others. If one is dumping way too much oil, it should be obvious. If they all look close to the same, I wouldn't worry.

If oil is bubbling up from where the injector seats into the head, that's a sign of a bad upper o-ring.

If all the other injectors are spitting oil and one is not, then yes, that's a sign of a bad injector. Often times this happens at first when the injector is cold but it starts spitting oil when the engine warms up.

And for the record, you can start and idle the truck with no valve covers without masking anything off or making any kind of mess.