Mustang EcoBoost Discussions
so, occasionally i’d get a p0301 code on cold starts only.
i have a 2017 with 41,000 miles on it
it has
no tune
roush cai
mbrp catback exhaust
i’ve switched the coils - not the problem still stays on cylinder 1
checked the spark plugs, they’re nearly perfect
no signs of vacuum leaks
no signs...