Injector pintle caps

[lolcantturn]

Soup guys. I changed the O-rings on two of my injectors but the pintle cap on one was broken and the other broke off upon removal. My idle is kinda rough now since changing the O-rings (there are no vaccum leaks from doing this, checked and re-checked) so I'm wondering if not having a pintle cap will actually affect my idle? Because as far as I know they're primarily there to hold the O-ring and spacer in. Just tossing ideas around as my M50's idling problems are awkward and random

[ZekeTheSneak]

The whole cap came off? Or just the weird plastic ribs? I broke all of the little ribs off of my m20 injectors with no ill effects. I'm pretty sure you need the cap for the spray pattern.

[MaksV]

eventually due to engine vibrtion the oring can work itself off and down into the intake manifold.

[Gregs///M]

I would get it fix asap. What's the worse that can happen? the injector working loose and shooting fuel all over the top of the engine, then fire.

[acolella76]

Every time a pintle cap comes off for the orings to be replaced, the pintle should be replaced. So yeah I would say that not having a pintle cap COULD be a problem, but I'm not saying that it is for sure your problem.

http://injector-rehab.com/shop/BMW-F...tle-style.html ;)

[jaywood]

Just making sure....the pintle caps didn't fall into the cylinder, did they?


The caps shouldn't be the problem. Are the injectors seated correctly?

[browntown]

caps and o-rings are dirt cheap. you might as well replace them all when you're in there.