Hey guys , question on what does a pintle cap do , the ones i got on my injectors are cracked and 1 had came right off the injector , would it be bad to run with out one of these caps or what is the purpose of them.
New ones don't cost much at all. I got them at Pep Boys last time for $3 each.
Borg-Warner P/N 274081
They comes with new o rings also.
I can't tell you there exact purpose, but they are needed.
The pintle cap keeps the rubber O ring on the lower part of the injector body from sliding off and falling into the lower intake.
Fuel injector seal kits with 2 O rings and a pintle cap (Borg-Warner P/N 274081) are available at Pep Boys auto parts. Cost is about $3 per kit.. The following are listed at the Borg-Warner site ( BWD - Home ) as being resellers of Borg-Warner parts:
Most of the links above have store locators for find a store in your area.
Use motor oil on the O rings when you re-assemble them & everything will slide into place. The gasoline will wash away any excess oil that gets in the wrong places and it will burn up in the combustion chamber.
The pintle caps fit either injectors with a pin sticking out the injector end or 4 with more tiny holes in the injector end. If the correct pintle caps are used, they do not have any effect on the injector spray pattern or engine performance.
Heating the pintle caps in boiling water makes it much easier to install them.