curly

iTrader: (25)

Anybody have their fuel rail leak where the injector fitting is pressed into the rail?

My RX-7 460s were rebuilt by RC engineering less than two years ago, and I just installed $60 worth of seals. Brand new Mazda upper and lower seals, plus isolators, but I don't think they seal.

I'm still having an issue with a wet #4 injector. It doesn't seem to be the FPR, although it is directly above it. Years ago (8ish) I replaced the FPR thinking it was bad, but it wasn't. Point is it's old, but not 20 years old.
#1

#2

#3

and a couple shots of #4



You can see the discoloration on the red plastic (that's wet fuel) and the tan staining on the metal barrel below.

Braineack

iTrader: (62)

only when I install them without any grease and tear the o-ring.

curly

iTrader: (25)

Greased with engine oil before inserting, they couldn't of gone in easier. Just a sloppy "pop" when they seated. I highly doubt they're torn. I replaced all 3 rubber pieces when I saw some cracking on the isolator (which doesn't even see fuel) thinking that was the issue. All 4 old o-rings came off looking fine, and the new ones went on easily with the oil.

I'm going to try and clean that little groove around the seat and see if I can see anything.

curly

iTrader: (25)

Can anyone say Capped-Do-It-Yourself-Dual-Feed-Fuel-Rail-Fail 10 times fast?

Jumped the fuel pump, kinked the return line, and found fairly quickly where the fuel was coming from. Got about a full turn out of the NPT plug, hopefully the issue is resolved. I'll check back later.

Still kinda wished it was an excuse for a new fuel rail...