Excess Fuel on passeger side of engine
06-24-2011, 12:03 PM
#1
Thread Starter
Join Date: Jun 2011
Location: Florida
Posts: 7
Excess Fuel on passeger side of engine
Recently I had my mustang stroked to a 5.1 and did the usual stuff of all forged internals so on and so forth. During the build, I went with some AFM blower cams and trickflow stage 2 heads. The car has only been started and idled since the new setup was installed and with all things considered, the car ran halfway decent minus needing a new tune. The car is at the dyno shop to be tuned and they can barely keep the car running. I had the CPU flashed at the dealer and new custom tune for the car was installed. Now the car is running extremely rich on the passenger side bank and is actually dumping raw fuel into the exhaust. Need some advice on what this could be. Thanks in advance.
06-24-2011, 12:26 PM
#3
Resident Ford Troll
Join Date: Jul 2006
Location: Delaware
Posts: 6,717
FP reg? stuck injectors? Exhaust leak before the front 02? Could be quite the combo of things. With a setup like yours nobody can tell you anything without first knowing the entire mod list then actually seeing the car.
06-24-2011, 01:12 PM
#5
Thread Starter
Join Date: Jun 2011
Location: Florida
Posts: 7
yea my bad on the mod list. here is my mod list that i can remember
5.1 stroked engine
Forged Kellog Crank
Forged Manley Rods
Diamond pistons
Vortech vq-s2 supercharger with air to air intercooler and 8 rib conversion
Vortech mondo by pass valve
Trickflow Stage 2 heads
AFM af-f52blower cams
lightning 90mm mass air
aluminum lower intake
dragon upper intake
accufab 75mm tb
afm power pipe
kenne bell boost a spark
kenne bell boost a pump
60lb injectors
255 lph fuel pump
slp longtube headers
slp x pipe
5.1 stroked engine
Forged Kellog Crank
Forged Manley Rods
Diamond pistons
Vortech vq-s2 supercharger with air to air intercooler and 8 rib conversion
Vortech mondo by pass valve
Trickflow Stage 2 heads
AFM af-f52blower cams
lightning 90mm mass air
aluminum lower intake
dragon upper intake
accufab 75mm tb
afm power pipe
kenne bell boost a spark
kenne bell boost a pump
60lb injectors
255 lph fuel pump
slp longtube headers
slp x pipe
06-24-2011, 01:50 PM
#8
TECH SAVANT
Join Date: Dec 2006
Location: Saint Augustine, FL
Posts: 10,938
Have you logged or observed the short term fuel trims?
Doing so will tell you if the PCM is sensing the rich condition--if it is then the bank 1 STFT will be very negative, -30% or better. If the PCM is not sensing the rich mix look at the O2 sensor on the passenger side.
Swap the injectors bank-to-bank and see if the problem moves with them--it could be one or more bad injector?
Doing so will tell you if the PCM is sensing the rich condition--if it is then the bank 1 STFT will be very negative, -30% or better. If the PCM is not sensing the rich mix look at the O2 sensor on the passenger side.
Swap the injectors bank-to-bank and see if the problem moves with them--it could be one or more bad injector?
06-24-2011, 02:12 PM
#9
Thread Starter
Join Date: Jun 2011
Location: Florida
Posts: 7
Have you logged or observed the short term fuel trims?
Doing so will tell you if the PCM is sensing the rich condition--if it is then the bank 1 STFT will be very negative, -30% or better. If the PCM is not sensing the rich mix look at the O2 sensor on the passenger side.
Swap the injectors bank-to-bank and see if the problem moves with them--it could be one or more bad injector?
Doing so will tell you if the PCM is sensing the rich condition--if it is then the bank 1 STFT will be very negative, -30% or better. If the PCM is not sensing the rich mix look at the O2 sensor on the passenger side.
Swap the injectors bank-to-bank and see if the problem moves with them--it could be one or more bad injector?
