S14mc
03-03-2010, 12:34 PM
Good day Zilvians! For the life of me i cannot figure out why my motor is running so rich. Please help. Here's the synopsis:
s13 sr20det blktop
GT2871r
JWT Ecu
50# injs
Marlboro FP
stock fpr
replaced o2 sensor
Car runs perfectly when cold. It even boosts fine (although i dont run it hard when cold). However when i drive it for about 20mins the car seems to hesitate and run extremely rich, noticeably by the drivers around me (however there is no smoke exiting my exhaust. When i attempt to accelerate hard, it boosts fine, but it seems the car falls flat on its face. Car revs fine and idles fine and doesnt overheat.
Things i've done and has checked out:
inspected visually piping and vac lines
tested injectors
checked and cleaned maf
replaced cts
checked fuel pump and oring
checked for codes (only get 55)
checked exh mani, dp, ex. For leaks
i have not checked:
stock fpr ( will do tonight)
timing
cas or tps
i wouldnt think my timing has changed mechanically or can like the cas slip? Any other info u need let me know. Thanks guys for your help.
new fuel filter
s13 sr20det blktop
GT2871r
JWT Ecu
50# injs
Marlboro FP
stock fpr
replaced o2 sensor
Car runs perfectly when cold. It even boosts fine (although i dont run it hard when cold). However when i drive it for about 20mins the car seems to hesitate and run extremely rich, noticeably by the drivers around me (however there is no smoke exiting my exhaust. When i attempt to accelerate hard, it boosts fine, but it seems the car falls flat on its face. Car revs fine and idles fine and doesnt overheat.
Things i've done and has checked out:
inspected visually piping and vac lines
tested injectors
checked and cleaned maf
replaced cts
checked fuel pump and oring
checked for codes (only get 55)
checked exh mani, dp, ex. For leaks
i have not checked:
stock fpr ( will do tonight)
timing
cas or tps
i wouldnt think my timing has changed mechanically or can like the cas slip? Any other info u need let me know. Thanks guys for your help.
new fuel filter