This is something I've meant to post for long while, as it was something that was simple but difficult to do properly.
Injector seals are bitch to stretch over the caps, and you risk damaging both the caps and the seal trying to stretch them. Pintle caps are meant to be installed only once, and they get slightly loose once uninstalled. It's not recommended to reuse the pintle caps, but if you do, use good judgement. I've felt some slip around and some that come off easily. I'm fairly certain the intake valve or combustion chamber would enjoy gobbling it up, and you would have one happy motor:tsk:. I recommend you replace the caps, period. I will take no responsibility for anything you, or God, or the wind, or whatever decided to do to your car.
I destroyed the pintle caps of many injectors before, attempting to get the seal off, or just to get a cap off to use on another injector. This is what I have come up with.
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Fuel rail (top) seal is easy, just pick it out and replace. Use grease for orings when installing, makes things easier.
Pintle cap and bottom o-ring replacement.
1. Line up a razor blade right in between the slot in the cap, on top of the old o-ring.
2. Push it down till it hits the plastic washer.
3. Use a screwdriver or pick to peel the seal off.
4. I used a box wrench that fits snugly under the cap and around the nozzle of the injector, which was a harbor 5/16 wrench. Put it between the body of the injector and the plastic washer. Methinks the washer is there for this purpose, or maybe a spacer..just thinking aloud.
5. Gently pry up and down in a wiggling motion until you work the cap off. You will see the torn rim of plastic from inside the cap, when it comes off--this is why they are one time use.
6. The stack order, with the new o-ring, and hopefully a new pintle cap. Mines old for demonstration purposes.
7. Place them on the injector in the right order, then put the injector nozzle down on a flat surface.
8. Push down on the injector. Everything will snap into place.
9. Complete Injector
BTW, slightly OT cause I'm looking at my own pics: I use virgin cotton white rags in my shop cause I have loads and loads of them. My father owns a clothing mfg company, and these are the cutoffs which are usually discarded. Extra thick, usually all cotton, sometimes blends, clean, undyed PFD. If anyone wants a 5lb box of premium white rags, send $20 to derek@dedericms.com and title "rags". These are way better than those bleached used t-shirt boxes of rags. I use them for polishing and waxing as well, as they shine things up real good. They wash like clothes, so they are reuseable and only get better (more absorbent) each time you wash them.
Derek
DedericMS
Injector seals are bitch to stretch over the caps, and you risk damaging both the caps and the seal trying to stretch them. Pintle caps are meant to be installed only once, and they get slightly loose once uninstalled. It's not recommended to reuse the pintle caps, but if you do, use good judgement. I've felt some slip around and some that come off easily. I'm fairly certain the intake valve or combustion chamber would enjoy gobbling it up, and you would have one happy motor:tsk:. I recommend you replace the caps, period. I will take no responsibility for anything you, or God, or the wind, or whatever decided to do to your car.
I destroyed the pintle caps of many injectors before, attempting to get the seal off, or just to get a cap off to use on another injector. This is what I have come up with.
----------------------------------------------------------
Fuel rail (top) seal is easy, just pick it out and replace. Use grease for orings when installing, makes things easier.
Pintle cap and bottom o-ring replacement.
1. Line up a razor blade right in between the slot in the cap, on top of the old o-ring.
2. Push it down till it hits the plastic washer.
3. Use a screwdriver or pick to peel the seal off.
4. I used a box wrench that fits snugly under the cap and around the nozzle of the injector, which was a harbor 5/16 wrench. Put it between the body of the injector and the plastic washer. Methinks the washer is there for this purpose, or maybe a spacer..just thinking aloud.
5. Gently pry up and down in a wiggling motion until you work the cap off. You will see the torn rim of plastic from inside the cap, when it comes off--this is why they are one time use.
6. The stack order, with the new o-ring, and hopefully a new pintle cap. Mines old for demonstration purposes.
7. Place them on the injector in the right order, then put the injector nozzle down on a flat surface.
8. Push down on the injector. Everything will snap into place.
9. Complete Injector
BTW, slightly OT cause I'm looking at my own pics: I use virgin cotton white rags in my shop cause I have loads and loads of them. My father owns a clothing mfg company, and these are the cutoffs which are usually discarded. Extra thick, usually all cotton, sometimes blends, clean, undyed PFD. If anyone wants a 5lb box of premium white rags, send $20 to derek@dedericms.com and title "rags". These are way better than those bleached used t-shirt boxes of rags. I use them for polishing and waxing as well, as they shine things up real good. They wash like clothes, so they are reuseable and only get better (more absorbent) each time you wash them.
Derek
DedericMS
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