Hit the injector - Ford Powerstroke Diesel Forum
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post #1 of 24 Old 03-29-2019, 03:12 PM Thread Starter
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Hit the injector

Hey guys! New to the forums here. I'll give a little background real quick.

I bought a 2003 F350 King Ranch with the 6.0 in it a few months ago. This truck has 190k miles on it and has a stack of receipts with it for work that has been done over the years. When the truck had 60k miles it had the head gaskets, ARP studs, and EGR delete done. This was done by a local shop. Shortly after buying it I realized it was losing coolant. It seemed to be coming from the degas bottle. I must not have looked it over good enough before buying it because I've only been easy on it since buying it. No towing or anything like that. I drove the truck for about another week since it wasn't losing much coolant I figured it must not have been too bad a leak. Well I was going down the highway one day and the truck died. I coasted off the highway and into a parking lot to call a tow truck. They picked it up and dropped it off at my house. The next day it started right up. After it began to warm up it started missing then died and wouldn't start again. I figured it would likely be a high pressure oil leak. The truck sat a couple months so I could save money for repairs. Having just bought the truck ($11k) I was kinda broke. Now I purchased the heads up gasket kit from sinister diesel with the OEM Ford head gaskets and new arp studs. Once they arrived I began tear down. I did find what I believe was the source of my stalling problem. One line that feeds the high pressure oil rail on the driver side had a blown o-ring. I bought a kit to replace all the o-rings on the high pressure oil system. Today I finally got one of the heads off. I am doing this with the cab on so it is very tight. The driver side head was fighting me coming off and I was completely exhausted by the time I got it free. Sometime during the fight i must've bumped one of the injectors. It looked like one of them has a clean spot on the tip. Will this injector be okay? It didn't look damaged but I'm not sure what lies under the carbon coat.

Edit: Uploaded some pics... don't know how well they show it though.
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Last edited by mermalion; 03-29-2019 at 03:27 PM.
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post #2 of 24 Old 03-29-2019, 04:23 PM
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Shouldn’t remove heads with injectors/glow plugs in it. You should have them cleaned DECKED (most important) and pressure tested at the bare minumum by a machine shop.


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post #3 of 24 Old 03-29-2019, 04:58 PM
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Hit the injector

Double post sorry.

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post #4 of 24 Old 03-30-2019, 08:05 AM
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Maybe, possibly, could be ...as @LoxDiesel said, best to remove the injectors and glow plugs first. Been a few years back, I had a couple of guys carry a head into the shop(large head needs two to carry) and proceed to place it on my work bench. I didn't catch them in time ...as they slid the head over the edge of the bench, all 6 injector tips were sheared off ...price just went up for a valve job.

Look closely(magnifying glass) at the holes in the injector tip, if they are not damaged you may have dodged the bullet. With 190k miles ...think that all the fuel that ever ran in the truck has passed thru those tiny holes ...spray pattern directly affects efficiency of the engine ...may want to put new/reman injectors in since you have the engine down anyways.

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post #5 of 24 Old 03-30-2019, 12:25 PM
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If that was my truck, it wouldn't even be a question - there would be 8 new glow plugs & 8 new injectors going in there. Yeah, you'd eat ~$1800, but to leave it to chance after you've just done all that engine work - no way. But, that's me - you gotta do what's best for you within your budget & your truck.

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Originally Posted by Hydro View Post
Maybe, possibly, could be ...as @LoxDiesel said, best to remove the injectors and glow plugs first. Been a few years back, I had a couple of guys carry a head into the shop(large head needs two to carry) and proceed to place it on my work bench. I didn't catch them in time ...as they slid the head over the edge of the bench, all 6 injector tips were sheared off ...price just went up for a valve job.
LOL!! OUCH!

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post #6 of 24 Old 04-25-2019, 01:50 PM Thread Starter
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Okay guys I apologize for not getting back to you. I replaced the injector that I noticed the mark on. It's not in the budget to replace all of them at the moment. I now have the engine completely reassembled and everything torqued to spec. The issue I have now is that I've cranked it a lot and it's still not firing. I replaced the oil, filter, fuel filters, and coolant during the head gasket replacement. I have fuel in the fuel filter housing on top of the engine but no oil in the oil filter housing. I removed the filter and depressed the valve in the bottom of the filter housing and had my girlfriend crank the engine... still no oil. The filter is completely dry by the way. I then read about the pressure relief valve on the bottom front of the engine. I took it out and it looked fine... no debris or anything. I reinstalled it and cranked the engine again... no go. Any ideas? The engine ran before disassembly but would die when warmed up. I found a blown HPO o ring on a line that fed the driver's side HP oil rail. Also found the lower oring on 2 injectors that were blown apart. I replaced those aswell. From what I read online it seems the low pressure oil pump or pickup tube are bad. How can that happen when sitting and not running?
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post #7 of 24 Old 04-25-2019, 01:56 PM
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Not trying to be a jerk or insult you... there's oil on the dipstick, yes?

I could see a very justifiable "I'll top it off later" scenario with that much work going on.

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post #8 of 24 Old 04-25-2019, 02:02 PM Thread Starter
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Yes sir, I figured it would need to pump oil up into the oil rails and everything to it's actually up at the max line.
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post #9 of 24 Old 04-25-2019, 02:07 PM
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I had to ask. Well... the chain is oil pan, oil pickup tube, oil pump + relief, oil cooler + bypass, and the tower. Oil's at the pan and not at the tower.

Pickup tube clogged?
Something wacky at the cooler?

There's not much between point A and point B.

It might be worth throwing a pressure gauge on the LPOP port to see exactly what is going on.

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post #10 of 24 Old 04-25-2019, 02:31 PM Thread Starter
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I just don't understand how any of those could go bad from sitting. Except for the pressure relief valve... I could see it getting stuck or something. It was removed and cleaned... seemed fine though. The truck is sitting at a slight decline toward the rear. It's not much though... wouldn't think it would make a difference.
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