SasaniFab
Proven Member
- 2,433
- 782
- Dec 1, 2013
-
Mexico,
Connecticut
So my customer came by today to turn up the boost as we had the car dialed in... so we thought. Took the car out for a pull and it hesitated at wot almost like ignition issues, very choppy , in and out. Took the car home and took the plug out and the ground electrode was melted back a bit which obviously scared the shit out of me. This didnt make any sense to me as the car had no knock and the afrs were solid. Come to find out the previous owner turned the knock sensor off until 7500 .... my mistake for not noticing. I compression tested the car 180 dead on all 4 with 0 smoke and 190 temps all day.... so relieved. I installed new plugs and took the car out with the knock sensor activated.... car was registering knock up the ass at part throttle and wot. Timing and fuel made no difference. Come to find out the previous owner blew up their engine under similar circumstances but instead of fixing the issue they turned of the knock sensor and turned the boost up. Same injectors were used on the same cylinders from that engine on this one. The injectors were flow tested and everything looked normal. The injectors in question are pte 1200 that are over 10 yeats old. Based on the above symptoms im leaning towards a bad injector in number 3. The other cylinders looked great. What do you guys think?