If it's cranking slower , perhaps a weak battery or too heavy of an engine oil
( I knew a guy that put 20 w 50 in his Oldsmobile when it called for 5 w 30 and it
started to crank really slow when the weather turned cold )
Automatic choke stuck open
By installing an cold air intake on a mustang
30ish, depending on octane levels and type of plugs.
your oil could be too thick to allow the engine to crank over fast enough to start, or you might need a new battery!
check igntion coils
Yes, that is how you know that the battery is "strong" enough to start your car in cold weather. A battery in warm weather may have enough amps to start the car fine, but in cold weather, it wouldn't be able to crank it fast enough. A car battery efficiency drops off the colder it gets.
"Cranking Amps" are the amount of amps required for the starter to crank the engine. Automobile batteries are measured in "cold cranking amps." That's the amperage capacity of the battery in cold weather.
bad fuel filter
Group 27, about 750 cold crank amps.Group 27, about 750 cold crank amps.
A slow crank on start up is typically a sign of a weak or bad battery. Have your battery tested at a local auto parts store and replaced it if it is determined to be bad. Cold weather can also cause an engine to crank slowly. If the engine consistently starts when cold, even if it cranks slowly, you should be fine, however, you may want to eventually get a battery with more cold cranking amps (CCA).
batteries are rated for cranking amps and cold cranking amps.. in warm or hot conditions your engine oil is also warm and not thick so your batteries do just fine.. now in cold weather conditions your engine oil is thick so your battery doesnt have the potential to crank the engine
Group 34 Approx 600 cold crank ampsGroup 34 Approx 600 cold crank amps