Injector Cup Job
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Mountain Pass
Joined: Jan 2018
Posts: 132
Likes: 2
Injector Cup Job
I'm going to replace all my injector cups this weekend. I have got the special tools and going to replace the o-rings while I'm in there. What type of Loctite do i need for the cups? Any other tips/advice would be appreciated. Thanks
Laughing Gas
Joined: Mar 2017
Posts: 833
Likes: 4
My only tip/advice would be don't replace them unless you are certain they need to be replaced. Did you have fuel in the coolant?
I'm not sure if it's better to do just the one or two that are bad, or all of them. I do know that a lot of people screw this job up and end up having to do it 2 or 3 times over before they get it right. It's not easy! (not to scare you off, but you should be aware)
I'm not sure if it's better to do just the one or two that are bad, or all of them. I do know that a lot of people screw this job up and end up having to do it 2 or 3 times over before they get it right. It's not easy! (not to scare you off, but you should be aware)
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Mountain Pass
Joined: Jan 2018
Posts: 132
Likes: 2
So I started it up today and moved it and it threw a code and now is running kinda rough , it has power but just seems shake more than normal. I tried reading the code with my reader but it wouldn’t. Could this be related to the cups leaking or is it a separate issue? The truck has 294k miles
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Lead Driver
Joined: Dec 2006
Posts: 7,092
Likes: 145
From: San Diego, CA
Sounds like a separate issue. If it's running rough could it be missing?
The last time mine ran rough it was missing and threw a code. Turns out one of my injectors came unplugged.
The last time mine ran rough it was missing and threw a code. Turns out one of my injectors came unplugged.
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Mountain Pass
Joined: Jan 2018
Posts: 132
Likes: 2
So I tore into my injector job. I’m replacing all the orings and the copper washer things. The copper washer things that came with my kit, seem to be slightly smaller than the old ones. I was thinking about just barely filing the three “tabs” so that they can fit over the tip, it just use the old ones? Idrk what to do
Got Data?
Joined: Dec 2012
Posts: 4,250
Likes: 1,382
From: Lake Stevens, WA
Check Tugly's thread on the subject here: https://www.ford-trucks.com/forums/1...tick-up-6.html
I struggled to get mine to seal - make sure you take time to really clean each bore once you remove the cups. I was not **** enough and it took several tries over several weekends.
I struggled to get mine to seal - make sure you take time to really clean each bore once you remove the cups. I was not **** enough and it took several tries over several weekends.
Got Data?
Joined: Dec 2012
Posts: 4,250
Likes: 1,382
From: Lake Stevens, WA
The copper washers will be snug/tight, but they should fit. There might be some carbon on the injector that hangs them up a bit. I had to wiggle/twist a few of them to get them to slip on. I think you want to use the new ones, since they end up crushing a bit to seal the injector to the cup/bore.
Posting Guru
Joined: Oct 1999
Posts: 1,832
Likes: 0
From: McRae, AR
My only tip/advice would be don't replace them unless you are certain they need to be replaced. Did you have fuel in the coolant?
I'm not sure if it's better to do just the one or two that are bad, or all of them. I do know that a lot of people screw this job up and end up having to do it 2 or 3 times over before they get it right. It's not easy! (not to scare you off, but you should be aware)
I'm not sure if it's better to do just the one or two that are bad, or all of them. I do know that a lot of people screw this job up and end up having to do it 2 or 3 times over before they get it right. It's not easy! (not to scare you off, but you should be aware)
Lead Driver
Joined: Apr 2011
Posts: 8,259
Likes: 346
From: Northern California
if fuel is leaking into the coolant at 50 psi then almost certain that coolant is going to leak past the cup at 16 psi test pressure.