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wasionman's Avatar
wasionman wasionman is offline
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Cool Ebay Fuel Injectors - 09-25-2020, 03:09 PM

Hey guys I just bough a set of NEW(supposedly) index 12 fuel injectors off of ebay. The injectors didnt come with a cap covering the nozzle. What do i need to do to install these injectors? Can I just throw them in or do I need to replace the seal(o-ring) around the nozzle? Help is much apprectiated!


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iminhell1 iminhell1 is offline
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Default 09-25-2020, 06:08 PM

To do them right, look for a large brown container, top should flip open. Toss injectors in and buy a real set that aren't fakes.

Want to know a dead giveaway that they are fake?
Look at the coding data printed on them. You'll virtually never see 2 that are the same. If you end up with 6 that are the same, you got hosed.

But, every time you pull and injector you should replace the decouple ring and the seal. ALSO, be sure to reinstall the hold downs the correct way.


2010 135i auto,
2020 mods: Speedtech S366, VTT DBBL, PR Coils, dual 450's, etc
Best stock turbo 1/8 mile: 7.469 @ 98.56, 1.769 60'
Best stock turbo 1/4 mile: 11.480 @ 121.79 1.802 60'
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NashN54 NashN54 is offline
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Default 09-28-2020, 11:01 AM

Watch this:
The SECRET To Replacing Index 12 Injectors FOR CHEAP on BMW N54 (135i, 335i, 535i) - YouTube
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kd7iwp kd7iwp is offline
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Default 09-28-2020, 01:51 PM

If they all have different numbers you can certainly give them a shot. There's a tool kit that has a cutter to cut the o-rings and 3 dies to progressively shrink the new seals. I bought the kit from ECS and it wasn't particularly cheap for what it is, but works well. Then after you shrink the new o-rings and replace the decouplers you can pop them in and code with INPA. I bought a set of used index 12s locally and they work fine, though no different than my index 7/8s from before.
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iminhell1 iminhell1 is offline
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Default 09-28-2020, 05:30 PM

Jake spent too much on tools and ****.

This is the most cost effective injector tool --> PRECISION RACEWORKS - BMW N54 INJECTOR TOOL #601-0005

Have one myself. Works for VW injectors too I'm told.


2010 135i auto,
2020 mods: Speedtech S366, VTT DBBL, PR Coils, dual 450's, etc
Best stock turbo 1/8 mile: 7.469 @ 98.56, 1.769 60'
Best stock turbo 1/4 mile: 11.480 @ 121.79 1.802 60'
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kd7iwp kd7iwp is offline
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Default 09-29-2020, 09:28 AM

Quote:
Originally Posted by iminhell1
Jake spent too much on tools and ****.

This is the most cost effective injector tool --> PRECISION RACEWORKS - BMW N54 INJECTOR TOOL #601-0005

Have one myself. Works for VW injectors too I'm told.
Thanks for sharing! That looks like a great tool and it definitely is cheaper.
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NashN54 NashN54 is offline
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Default 09-29-2020, 12:07 PM

Quote:
Originally Posted by iminhell1
Jake spent too much on tools and ****.

This is the most cost effective injector tool --> PRECISION RACEWORKS - BMW N54 INJECTOR TOOL #601-0005

Have one myself. Works for VW injectors too I'm told.
You obviously didn't bother to watch the video...

He used a razor blade for seal removal, the head of one pen to stretch new rings out to install the new seals, and then another pen's cap to compress the rings down prior to installation. How are those expensive tools?!?!
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iminhell1 iminhell1 is offline
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Default 09-29-2020, 04:46 PM

Quote:
Originally Posted by NashN54
You obviously didn't bother to watch the video...

He used a razor blade for seal removal, the head of one pen to stretch new rings out to install the new seals, and then another pen's cap to compress the rings down prior to installation. How are those expensive tools?!?!
Since spoon feeding is required for you,

The SECRET To Replacing Index 12 Injectors FOR CHEAP on BMW N54 (135i, 335i, 535i) - YouTube


and I guess looking back at PR's site, they don't have this pic and if you've never read about the tool I guess it could be overlooked
It's a injector removal tool (slide hammer), seal expander (cone), seal compression (3 slow stages) and has extra storage space for extra seals and rings.
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2010 135i auto,
2020 mods: Speedtech S366, VTT DBBL, PR Coils, dual 450's, etc
Best stock turbo 1/8 mile: 7.469 @ 98.56, 1.769 60'
Best stock turbo 1/4 mile: 11.480 @ 121.79 1.802 60'

Last edited by iminhell1; 09-29-2020 at 04:53 PM..
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NashN54 NashN54 is offline
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Default 09-30-2020, 07:31 AM

Quote:
Originally Posted by iminhell1
Since spoon feeding is required for you,

The SECRET To Replacing Index 12 Injectors FOR CHEAP on BMW N54 (135i, 335i, 535i) - YouTube


and I guess looking back at PR's site, they don't have this pic and if you've never read about the tool I guess it could be overlooked
It's a injector removal tool (slide hammer), seal expander (cone), seal compression (3 slow stages) and has extra storage space for extra seals and rings.
You are the one needing to be spoon fed. The OP's main question:

Quote:
Can I just throw them in or do I need to replace the seal(o-ring) around the nozzle? Help is much apprectiated!
I simply pointed them to a guide that would help save money on installation, since they are obviously trying to do it on a budget.

He didn't ask for any tools, but you showed up anyways...
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bmwboyee bmwboyee is offline
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Default 10-02-2020, 08:05 AM

I'm willing to bet the injectors are fake. Probably scratched out the index number and stamped a new one.
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nhatnguyen14 nhatnguyen14 is offline
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Default 10-02-2020, 11:01 AM

they're junk. bought a set of 6 with the exact same numbers. had to buy them from fcp and it works great after that
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