03-18-2012, 09:33 PM
Join Date: Jul 2009
Location: jackson, MS
What I Drive: 2008 focus
FF Reputation: 1
Buy-Sell-Trade Rating: (0
2009 engine miss when cold
This is a non-moded stock engine w/50 k miles, manual 5 spd,runs great when warm but has a slight stutter when cold during light acceleration. Kind of like the A/C comp cutting in/out. No a/c or heat on at the time.
I changed both air filter and fuel filter 10k miles ago, and nothing seems loose near the TB.
It idles at 750 per tach after initial warm up.
Could this be a natural lean burn characteristic ? It's not a PZE engine I don't think since it was from the south.
Thoughts on what to check? thanks.