Hey all, i have an 02 lb7, has about 202,000 miles on her. i run a ppe tuner on level 3 with a ppe boost valve and straight pipe.
before today i would have a very slight haze at idle, something you couldn't see unless you were really looking for it. and a bit of a lopey idle, its an inconsistent lope though, therefore i thought i might have a bad fpr.
also before today all my balance rates were in the +-.0x and +-1.xx except #3 injector which was -3.xx. and i read gm thresholds at idle was +-.0 to +-4.0 so i didn't think much of it (that's why i thought my fpr is bad)
anyway, so today was the day to pull the boat out so i put it on level 1 tune as to tow. i pull the boat out which trailer and all is about 12000 lbs and then drove 10 minutes to my house with one decent sized hill.
as i pull into my development i notice white/grey smoke rolling out of the exhaust and a rough idle. in neutral if i goose the throttle it turns grey/black and a decent size cloud also.
so i pop the hood and notice a ticking on the passenger side towards the cab. i then hooked up my tuner and #3 cylinder is at -6 balance rate
that doesn't seem like a big enough difference to be making the engine run so rough? would this be my problem? or would it be something else as well? i took the intake off and someone start the truck and quickly shut it off to see if the turbo spun freely and it does. i also checked the radiator hoses and they were not hard.
i didn't think that one bad injector only at -6 would make it smoke like that, especially blackish smoke under throttle. i though bad injectors was all white
i just want to make sure there's not something else wrong before i go start replacing injectors or an fpr, and if i do have to replace the injectors i was going to install 20% over injectors or should i got 30%. i read that 40% over injectors you need efilive to make a custom tune for them. thanks all in advance! i want to get this thing back on the road.
before today i would have a very slight haze at idle, something you couldn't see unless you were really looking for it. and a bit of a lopey idle, its an inconsistent lope though, therefore i thought i might have a bad fpr.
also before today all my balance rates were in the +-.0x and +-1.xx except #3 injector which was -3.xx. and i read gm thresholds at idle was +-.0 to +-4.0 so i didn't think much of it (that's why i thought my fpr is bad)
anyway, so today was the day to pull the boat out so i put it on level 1 tune as to tow. i pull the boat out which trailer and all is about 12000 lbs and then drove 10 minutes to my house with one decent sized hill.
as i pull into my development i notice white/grey smoke rolling out of the exhaust and a rough idle. in neutral if i goose the throttle it turns grey/black and a decent size cloud also.
so i pop the hood and notice a ticking on the passenger side towards the cab. i then hooked up my tuner and #3 cylinder is at -6 balance rate
that doesn't seem like a big enough difference to be making the engine run so rough? would this be my problem? or would it be something else as well? i took the intake off and someone start the truck and quickly shut it off to see if the turbo spun freely and it does. i also checked the radiator hoses and they were not hard.
i didn't think that one bad injector only at -6 would make it smoke like that, especially blackish smoke under throttle. i though bad injectors was all white
i just want to make sure there's not something else wrong before i go start replacing injectors or an fpr, and if i do have to replace the injectors i was going to install 20% over injectors or should i got 30%. i read that 40% over injectors you need efilive to make a custom tune for them. thanks all in advance! i want to get this thing back on the road.
