Been a while since I posted here, but I'm having some issues with starts lately. I've got a 2005 GT with a magna charger and comp cams. Cold starts were very rough for a few seconds, I'd crank it, AFR would peg rich, then the car would stumble and I'd have to stay in the throttle to keep it going. I checked the plugs and had a few bad ones so I swapped those and it helped somewhat, but it still starts rough.
What I'm thinking might be happening is am injector or 2 are leaking down and causing the rough starts, since it really only happens after the car has sat 4-10 hours. If it sits fully overnight, it's perfectly fine. I checked my fuel pressure at the rail and it drops 5 psi over 5 or so minutes, another 5 over a few hours, then maybe 20 overnight. Other things to note, after checking the fuel pressure, it started real rough with white fuel smelling smoke. I changed the oil, it doesn't smell like fuel and was a normal color. Other than this issue, the car runs perfect, anyone have any ideas? Just looking for some input or other things I could try before dropping 500 on new injectors.
Thanks!!
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What I'm thinking might be happening is am injector or 2 are leaking down and causing the rough starts, since it really only happens after the car has sat 4-10 hours. If it sits fully overnight, it's perfectly fine. I checked my fuel pressure at the rail and it drops 5 psi over 5 or so minutes, another 5 over a few hours, then maybe 20 overnight. Other things to note, after checking the fuel pressure, it started real rough with white fuel smelling smoke. I changed the oil, it doesn't smell like fuel and was a normal color. Other than this issue, the car runs perfect, anyone have any ideas? Just looking for some input or other things I could try before dropping 500 on new injectors.
Thanks!!
Sent from my SM-G975U using Tapatalk