I'm getting one of the AD components regardless. My decision now is which one..AD2 with sump or just a helper pump. I have zero problems with paying the money for the RR. I like the idea and it functional. I just want works the best for our motors. I hate cosmetic gibberish. Personal opinion of course, to each his own.

 

Neither does anyone else. There's alot of talk and no real proof.

 

I asked myself the same thing. It's nice to have the reliability of a pusher pump since if something went wrong you'd still have the stock pump pulling fuel, so you wouldn't be stranded... however the AD2 with the built in regulator is nice too. Tough call.

I measure fuel pressure behind the heads, I would bet that readings at the fuel bowl would be different. Might have to try it to prove it out. Maybe I'll order the fitting this week for reading at the fuel bowl. FWIW, my readings behind the heads... SCARY.

Just out of curiosity, have you read any bit of the thread started by lubeowner over on PSN about what psi of fuel correlates to injector damage? It ties in nicely with this discussion and really makes you think.

 

I got into the PSI/damage post....I don't think anyone really knows the honest answer. I know what has worked for me. For 197k on my original injectors I wish I had the cash to pull them out for independent analysis on wear and flow. Maybe someday send them down to Cass for an assessment.

 

I think I might have 1 injector that's original... just rolled 100k myself. I'm not even sure why most of them were replaced. One died out on me electronically, just stopped working out of the blue. The others... still no idea why Ford replaced some of them. They were "sticky" but not "bad"... whatever.

I got into that post a little too, the whole thing was just absurd. Just curious if you had read any of it, since it ties in with this nicely.

197k on original 6.0 injectors is impressive no matter what. What mods are you running? Oil/filters?

 

Been running synthetics since about 20k clocked over with Fram/Motorcraft filters and a oil-bypass filter kit. I have been running a AD100 since 2008 or so. Ran plenty of Power Service at first then started down the 2-stroke road. Been clean and sober for a long time now. LOL My 2004 6.0 LOVED Power Service. The 2006 doesn't really need Power Service and too much 2-stroke causes a drop of about 1MPG. Go figure....It's hard not to feel the "need" to add something to the fuel...LOL

Mods over all I got plenty, just say it's just about a true Stage 1 truck minus bigger sticks. PM (2010), SCT (2007??), GOGO manifold (2011), AD100 (2008), Blue Spring (2011)

I do have to ask the same question as posted....WHY are there not more rear injectors failing if there is a starving issue at the back??

 

It seems like injectors die for other reasons before they ever get to the point of destruction from low fuel pressure. Poor maintenance, long oil change intervals, dying batteries, dying FICM's...etc etc. Tough to say. I will say, you would be scared to see fuel pressure at the back of the heads. I have a buddy running an AD2, bypassed the fuel bowl right to the heads, and reads his pressure out back, and his isn't much better than mine. It really makes you wonder.

I'm shopping around for the best price on the billet fuel/oil filter bowl caps, so I can start measuring fuel pressure there to see the difference.

I'm running a new OEM pump, the old style OEM fuel filters (doesn't have the o-ring setup on the lower filter, should make for higher pressures), the updated blue spring, and I measure fuel pressure behind the heads.

 

Look up NUC motorsports for the billet caps.

 

Yeah that's one of the one's I was told to check out. Ebay has the cheapest set I've seen so far... $100 free shipping for both caps.

 

Did you ever hook up a gauge to the fuel cap to see if there was much of a difference in fuel pressure there and at the back of the heads?