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'02 7.3 problem

1K views 2 replies 3 participants last post by  NCHornet 
#1 ·
'02 7.3 problem. i have a 02 w. 275k a superchip, exhaust and intake. every once in a while, when its cold, i mean the motor has just been started within 10 minutes or so, if i get on the throttle too much, she makes this loud nasty clatter like a gasser w/ the timing way off, but louder, if i let off the pedal, it stops. it also spits a cloud of black smoke when it happens. i have the 10k mod w/ an on/off switch and its never done it if i have that on. ive even pushed it real hard in the mornings to see and it never has w/ the 10k. any ideas? i did have to replace an injector last year, the tip of the nozzle was broken in half. i also have a miss that started about a year ago. runs great, just misses at idle.
 
#2 ·
Sounds like an injector problem. Which injector did you have replaced? Can you perform a buzz or contribution test?
 
#3 ·
Check your UVC harness on both sides.

NCH
 
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