Speed Density/Carb/SSP sectionThis section is for the Speed Density or Carb vehicles, as well as Special Service Package 'Stangs
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I am seeking possible repair advice. I do not know all the details of the build. Just what I have uncovered while working on the car. Its a 306, lunati high lift cam, ported e7 heads, edelbrock performer rpm intake mani, with a 650 edelbrock carb. has a MSD dist, msd 6 AL (I think), and a MSD blaster 3 coil.
Issue: the car started doing this about 2 months ago. I have owned it for 3 years and have not had this issue in the past. So the build is not the problem. Once the car warms up, if I give it a rev (either stationary or moving) once the RPM's drop it will die.
So, say I rev it while stationary to 2500-3k+ as soon as it revs down it will just stumble and die. Or , if I am on the interstate running @ 2300ish RPM's and take it out of gear to slow down, it will die. The only way to keep it alive is to feather the gas once you take it out of gear. Once you feather it for 3-5 seconds then it returns to idle and runs fine. It only does this when warm. When its cold it does not. Any ideas??
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If the choke is working correctly, then the car sounds to be leaning out at idle once warm. The choke keeps it idling higher when cold.
So many times on carbed engines, one just needs to go back to basics and readjust all the tuneup settings. I never assume anything is set right. Start from the beginning as if the carb, distributor, and plugs are all new and ready to install. Set the properly and go from there.
Panama City, Fl.
I wake up in the morning with nothing to do and by supper time, I have half of it done.
Vehicle: 05 Roush Sold 69 FB a work in progress. 95 GT
Location: The Great North East
As the gas gets crappier and has more ethanol, Things run leaner.
Also you may have just a little water collected in the float bowls.
Just a thought
2005 Roush Sport,SOLD
1969 Rust Back, Frame up Resto in progress. 351W, Worked C4, 9" BBK so far
1995 Saphire Blue GT, 5.0 stroker, Trick flow Heads, Intake, Cam,BBK 75mm TB, BBK EX
tr3550, Spec STG2, Eibach, Cobra brakes.
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