View Poll Results: Change inector O rings as a PM measure?
Yes, Change them.
4
19.05%
No, waste of time probably not needed
17
80.95%
Voters: 21. You may not vote on this poll
Injector o rings preventative maintenance
Thread Starter
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Postmaster
Joined: Dec 2008
Posts: 3,340
Likes: 2
Based on the feedback that I have received in this thread, I think I probably won't mess with them unless I start to have issues. At that point I will probably get some rebuilt ones.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
That would probably be a good idea if I end up pulling the injectors. How much does it cost to get each injector tested?
Based on the feedback that I have received in this thread, I think I probably won't mess with them unless I start to have issues. At that point I will probably get some rebuilt ones.
Based on the feedback that I have received in this thread, I think I probably won't mess with them unless I start to have issues. At that point I will probably get some rebuilt ones.
They will lose efficiency BEFORE they have issues. Take my other cars. The 99 Turbodiesel worked fine. Injector test said differnt. New nozzles were needed on 4. My gasser had varied flow numbers. One of them had a partially collapsed filter. Without a flow bench, all you have is the SOPT dyno which is inaccurate, at best.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
I agree with alkim, to a point. My last (2) sets of injectors RAN PERFECT in the truck, but both were considered FUBAR and not rebuildable (damage from contaminated VO - allegedly).
I just helped a friend swap out his (original) injectors at 380k miles. He developed a dead miss in #1. The o-rings were all FINE though.
My plan is to run the Excursion until there is a problem (its at 240k now). I am resisting the urge to 'upgrade' until then.
...I am resisting the urge to 'upgrade' until then. I am resisting the urge to 'upgrade' until then. I am resisting the urge to 'upgrade' until then....
I just helped a friend swap out his (original) injectors at 380k miles. He developed a dead miss in #1. The o-rings were all FINE though.
My plan is to run the Excursion until there is a problem (its at 240k now). I am resisting the urge to 'upgrade' until then.
...I am resisting the urge to 'upgrade' until then. I am resisting the urge to 'upgrade' until then. I am resisting the urge to 'upgrade' until then....
Thread Starter
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Postmaster
Joined: Dec 2008
Posts: 3,340
Likes: 2
Hard to say. Check with your local shop. Mine charges $45 per. That is to test, clean and re-O-ring them.
They will lose efficiency BEFORE they have issues. Take my other cars. The 99 Turbo diesel worked fine. Injector test said different. New nozzles were needed on 4. My gasser had varied flow numbers. One of them had a partially collapsed filter. Without a flow bench, all you have is the SOPT dyno which is inaccurate, at best.
They will lose efficiency BEFORE they have issues. Take my other cars. The 99 Turbo diesel worked fine. Injector test said different. New nozzles were needed on 4. My gasser had varied flow numbers. One of them had a partially collapsed filter. Without a flow bench, all you have is the SOPT dyno which is inaccurate, at best.
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
They will clean and test them. Again, you need to talk to your local shop. They will give you a flow sheet where they tell you roughly what each one flows at. If the shop is large enough, they will have a bunch of these injectors to mix and match till they get constant flow, should you desire. These injectors are not easy to hook up. You would have to have fuel and oil pressure and electrical signal. My gas injectors are easier. Fuel and electronic signal.
Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska
You know. Dave at Swamps was recommending to tighten down the injector bolts as tight as you could with a 1/4" ratchet for a while. When I first heard this, my first comment was I bet I could snap the head off one of those bolts with only a 1/4" ratchet. I think I'll stick to my in-lb torque wrench.
.
.
I have all new hold down bolts in the glove box waiting. Im still on the fence about going in, replacing them, and backing off and re-torquing the rockers before I loose one to stress.....
Lead Driver
Joined: Jan 2006
Posts: 7,308
Likes: 250
From: Hartford, WI
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Molon Labe
Joined: Dec 2006
Posts: 5,272
Likes: 1
From: Alaska
It very rarely happens in the driveway.
Like when my serpentine belt shreaded in BFE georgia with no spare, and when I lost an injector in BFE Florida, and I heard banjos playing while Larry, Darrel and Darrell..... worked on my truck (pre-50 cent mod, and no spare injector)
Or when I should have dropped my transmission off at the zoo, and let the chimps rebuild it for me......
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