03-11-2011, 02:31 PM
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CC Member
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Join Date: Jan 2008
Location: Celebration,
FL
Cobra Make, Engine: Superformance #2144 with a Roush 342R (sold June 2018, but still lurking on Club Cobra)
Posts: 128
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Not Ranked
D111
I purchased my car new in late August 2007. However, the car was built prior to that (it sat on the dealer floor for a while). My carb. was built around the same time frame as yours.
Some of the "fixes" I tried included changing the secondary spring (installed a weaker spring). I also changed to a larger main jet and a more aggressive secondary cam. In total, all these changes made a big difference, but still didn't completely resolve the issue.
Check with Roush again to validate your carb. is, or is not, one of the affected problem children. I remember they asked me what color paint was on the carb. Turns out they put a drop of paint on the carb. and the color I had was part of a larger group that had known issues ( I don't recall the specific color).
At any rate, the new carb. they supplied was perfect from the get-go. No issues and no problems. Couldn't be happier.
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