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Injector Cups.......and?

6K views 5 replies 5 participants last post by  jc82chevyman 
#1 ·
New guy here. I signed up a couple of weeks ago when I had an injector cup issue and needed to find some serious answers and opinions. Collectively everybody here is an amazing resource and some feedback would be much appreciated! I'll give details and maintenance background at the bottom.

Typical injector cup situation, fuel in the coolant reservoir and no other signs of head gasket problems. Took it to a reputable and highly recommended shop here in Richmond VA to fix the problem. Shop said the same thing, injector cups. Had them all replaced, they said injectors looked good but needed new o-rings. Picked it up yesterday and the diesel is back in the reservoir as of this evening. Shop wants me to bring it back in on Monday.

Question: Is there ANYthing else that could cause this? Bad injector, screw up on installing the cups, head gasket etc....

While I think that I've got a good shop doing the work, I'm getting worried that it could be something else or that they screwed up and may not own up to it and charge me more. Guys, this already cost me as much as my M1A1 and I'm getting frustrated! :dunno:

2002 7.3
139,??? miles
Gold coolant changed at 105,000
Oil changed regularly (diesel tech said he could tell by the condition of the injectors)
Noticed the problem 2 days after changing oil (which is why I'm told the injectors are fine since it didn't run too long in this condition).
Flushed the daylights out of the system before taking it to the shop.
Shop says they flushed the cooling system after repairs and replaced all coolant.
Picked it up and things under the hood looked good.
Now there is about 1.5 inch of diesel in the coolant.

I know that I'm a new guy without any posts. Any feedback would be much appreciated and I look forward to contributing in any way that I can.
 
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#2 ·
Had same problem with my 05 6.0 fuel in the degas bottle. Ford dealer said injector sleeves. They could test for which side. I decided since had 130k to do the work myself and do a valve job, new gaskets, stud bolts and EGR block off. Glad I did....machine shop found a sand hole on passanger head at top of injector sleeve when they pressure tested it. That was allowing pressurized full to enter the water jacket at that point. Apparently casting is thin in that area and over time it eroded through....no fix so had to buy a new head. My truck has never run better and I don't have head gasket worries any more running performance tunes. Good luck.
 
#3 ·
Thanks dave. I hope that I'm not looking at replacing the one or both of the heads.

Hopefully the shop pressure tested the cooling system to confirm that was the problem and not something worse like what happened to your 6.0. Too bad it happened on a Friday and I've got to wait until Monday before they can give me some answers.
 
#4 ·
I have an 05 350 with the same fuel in coolant problem but im experiencing a dead miss at lower under power rpms. Gonna take it to a shop to look at tomorrow. Im wondering if this is more likely a injector cup or a cracked head with the power loss? Any feedback will be greatly appreciated
 
#5 ·
maybe they didn't pound one in hard enough,i did my own in my 7.3 made the tools and all nothin to it just some time and making the right tool lol
 
#6 ·
It could also just be diesel left in the system the last time i did injector cups it took for ever to finally get all of the fuel out of the system. So you might ask the shop how many times the flushed I had it do it 4 times i think before i finally got it all out
 
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