uh oh breaking in cam

[Justin48]

ok so i just got finished getting my build together intercooler and xp cam bla bla... so i have the modded zzp rails OMG i got a ****ed up set.. the bend that goes over the inlet of the superchager had a pin hole leak, so i had to go spend the $10 to get it welded (zzp waned me to ship them back ground shipping but not possible i have to drive back to san diego on the 15th) got it running for the 2000rpm for the cam break in. My wideband pegs rich my hptuner scanner is saying my o2 is maxed and my ltft and stft are dropping like a rock and the engine starts stumbing... i kill it and my buddy sees ANOUTHER fuel leak. But this one is a tiny one that is misting but its AFTER the fuel regulater on the line going to the return line to the tank....
what would cause a return line to see that pressure??
i will be getting that rear rail welded too right now and on the way back pick up a fuel pressure guage. What is the pressures i should see? thanks

OH ZZP FIX YOUR RAILS!!!!

[01gpgt01]

42psi is what I run with vaccum. Beaking in a cam was a 1960's move. With hydrolic rollers its piontless and not needed. X2 on zzp's worthless fuel rails. I have a set and they blow

[matt5112]

prjs anyone?

[Justin48]

well fuel pressure is fine... ended up being melted o2 wires... fixed them but still goes out... think i fried the o2? or is it possible i screwed my pcm? any body run into simular problem?

[blwn3800]

Have you checked for vac leaks? Also cam break in on a roller cam is silly, theres no need for it.

[Justin48]

ok it was a fried o2 sensor. replaced it and it cleared up. runs like a champ! thanks guys!