ItsNiceToBurnRice

Im switchin from a 88 PD to a 89-91 fuel rail, and I read on mazdatrix that these airbleed things always almost break when pulled out of the engine. So are they in the actual injector, or in the rail after the injector is pulled out? Because they are quite pricy, like $50 for 2. I would like to know so I can avoid replacing them.

ItsNiceToBurnRice

so am I gonna have to take these outta the 89 rail when I get it?(Im gettin it from a forum member), and will I have to take them outta my rail also? this swap is already has more involved then I thought, I gotta buy new injectors o-rings, grommets, and a bunch of feul line. I YIE YIE!

tesla042

most likely, they'll end up staying in the manifold.. There's no reason to remove them.. here are some pics..

taken out, because i ported the manifold:


inside the extention manifold:


-Tesla

tesla042

they're not in the rail itself... they're in the manifold/block

aw, c'mon... o-rings are like 2.50$ each.. grommets can't be much.. fuel line, like 3$/foot.. 2 gaskets @ ~3$ each.. you can do it all for under 20$..

of course, the "right" way to do it is to send the injectors off to be professionally cleaned.. that will get you new o-rings and grommets free.. "free".

-Tesla

mazdaspeed7

There is no need to mess with the air bleeds when changing fuel rails or injectors. They stay in the manifold. I would suggest you go buy some 0-rings for the top of the injector(size ID 5/16, OD 7/16, width 1/16) and put some vaseline on the o-rings before you put the injectors in the fuel rail. I have read that youre supposed to use fuel(its in most of the books) to lubricate the o-rings, but I have messed up so many o-rings like that. I always have at least 20 spare o-rings at my house now. Vaseline works much better than fuel, slides right in, and never had a problem with the o-ring leaking doing it that way.

Telsa, have you driven the car with the ported intake manifold? What did you think?

tesla042

I used engine oil to lube them up... pressure tested just fine...no leaks..

Ugh..not yet.. School has been killing me.. I don't even have the manifolds bolted on yet.. i'm done with all the porting, sanding, gasket removal, and cleaning...just gotta bolt... hopefully soon, tho..

-Tesla

mazdaspeed7

Dont worry, it will all be worth the work and the wait.