Thoughts on injectors?
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Cross-Country
Joined: Apr 2025
Posts: 69
Likes: 54
Thoughts on injectors?
All,
Binky needs injectors. It has over 3500 hours on the engine and these are still the originals. Overall it still starts and runs well, makes good power and only shows smoke when over fueling.
But, there is a miss in the exhaust while idling and I hear clicking/ticking noises going down the road that all point back to injectors.
I'm still recovering after throwing down $5k for a transmission last summer, so I'd like some advice regarding injectors. Prices seem to vary widely and now I see there are brand new units for less than 'quality' rebuilt. Many of the 'quality' shops don't even show any available so I will have to send mine in leaving me down for weeks.
Has anyone else tried the new injectors? Are they like lift pumps that fail early? Should I accept a shorter service life for convenience?
Between the wide variety of qualities, prices and availability I'm kind of stuck. I need to get this done before racing season, but I don't want to blow my budget doing it.
John
Binky needs injectors. It has over 3500 hours on the engine and these are still the originals. Overall it still starts and runs well, makes good power and only shows smoke when over fueling.
But, there is a miss in the exhaust while idling and I hear clicking/ticking noises going down the road that all point back to injectors.
I'm still recovering after throwing down $5k for a transmission last summer, so I'd like some advice regarding injectors. Prices seem to vary widely and now I see there are brand new units for less than 'quality' rebuilt. Many of the 'quality' shops don't even show any available so I will have to send mine in leaving me down for weeks.
Has anyone else tried the new injectors? Are they like lift pumps that fail early? Should I accept a shorter service life for convenience?
Between the wide variety of qualities, prices and availability I'm kind of stuck. I need to get this done before racing season, but I don't want to blow my budget doing it.
John
Cross-Country
Joined: Jan 2014
Posts: 64
Likes: 12
From: Waco,Tx
Are the shops you're looking at talking about rebuilding your injectors or just coring them for new? If you think you have some time left on yours now, perhaps you could go to a local salvage yard for a used set and then send them off to the injection shop and keep running your current set until the new or rebuilds come in. I seem to remember buying some remans from O'Reilly's once, they were iffy at best. For the most part, an injection shop would do a phenomenally better job than generics from somewhere.
Logistics Pro
Joined: Jun 2017
Posts: 3,952
Likes: 509
From: Edmond, OK
I installed new injectors from O'Reilly's in my Bullnose truck a few years ago. I recently replaced them with injectors that I rebuilt myself with new nozzles from Classic Diesel Design. They work great.
https://classicdieseldesigns.com/
FWIW, tuning my injection pump with a piezoelectric spark adapter had more effect on the drivability of my truck than replacing the injectors. Have you timed the injection pump yet on your truck?
https://classicdieseldesigns.com/
FWIW, tuning my injection pump with a piezoelectric spark adapter had more effect on the drivability of my truck than replacing the injectors. Have you timed the injection pump yet on your truck?
Tuned
Joined: Sep 2024
Posts: 486
Likes: 121
From: Ougadougou
I had a similar situation--tick in the exhaust and a fuel knock. I replaced the injectors and lost the knock but the tick remained and that required rebuilding both cylinder heads. I hope your situation is just the injcetors.
The other thing is that if your injection pump is also as old as your injectors then you should replace it as well. Old pump with new injectors isn't a good idea. IP and injectors are typically replaced at the same time.
The other thing is that if your injection pump is also as old as your injectors then you should replace it as well. Old pump with new injectors isn't a good idea. IP and injectors are typically replaced at the same time.
Thread Starter
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Cross-Country
Joined: Apr 2025
Posts: 69
Likes: 54
There's no 'driveabilty' issues. It starts and runs great, there are just a few things that appear injector related. Was hoping someone had recent experience or good results.
I just don't have the funds right now for both.
I just don't have the funds right now for both.
Last edited by Binky7.3; May 7, 2026 at 10:47 AM.
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