What are the torque specs for the injectors? I want to do this right the first time so any pointers would be very helpful. Also what do you guys torque the oil rail down too?
For the injectors, in '03 the spec was 24 ft-lbs, later they increased it to 26 ft-lbs, and most builders recommend 28 ft-lbs to ensure the copper washer seals well. Make sure the bolt holes are clean and free of oil as this can affect the torque.
The rail bolts are 8 ft-lbs (96 in-lbs) for my '03, and your '04 should be the same. There is a sequence to tighten them in, here's the diagram from my service manual:
Tightening those oil rail bolts made me very nervous, being aluminum, be very sure of your torque wrench accuracy. Also, I just did 26 ft-lbs on the injector bolts, since that was the higher of the two factory specs and I didn't want to break anything. Good luck!
Driver or passenger side? I did both, and if I recall I couldn't get the torque wrench in on the lower passenger side so I used a box end wrench and did them by hand, comparing with another bolt I had torqued to about 85% of spec.
I didn't bother cleaning out the injector bores, I was concerned about knocking pieces of crap loose in there that could interfere with a seal, so unless you have the cleaning brushes and do it really well I wouldn't do it. Most builders use clean engine oil or ATF to lube the new o-rings, I used clean motor oil.
Not that I know of. I have smaller wire brushes that I put into a drill bit extention that goes into m 90 degree angle grinder. I put it odwn there, give it a few turns, spray some BG carbon cleana nd wipe it clean with rag and screwdriver. Than I either use my Blue-Point vacuum and suck the cyliner or blow it out with blowgun... Usually both. I then take snap-on camera down bores to make sure we all good... and pick up some STP Oil Treatment... Its thick as #### and it great for seals
the plugs on the injectors... lube them up and press them through the aluminum rocker box cover holes the right way up.. tiny slit shoul dbe at the bottom...
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