Sometimes MY Formula just doesnt want to start... like it will make a really slow cranking sound, and sometimes when it finally starts it makes a loud screeching/scraping sound...And Last night when I was WOT racing I got tons of misfire!!! I say this because It sounded as IF I shifted into 3rd gear twice ...It was bad...But it doesnt necessarily always feel down on power...And another thing..It seems like my exhaust tone has changed a bit...Like im not firing all cylinders or something...


What should I check first here?

 

check your bat.

Then if thats good, check your alt output, make sure your getting around 14V.

Brian

 

my charging system is 110% (I run an optima Redtop with a fresh alternator, fresh wires, ect.)


Its more in terms of not wanting to fire

 

omg i got the same thing, i got a new red top, and new wires, etc. and after a day, after i recharge the battery, it already starts to start up hard, then it like misfires? wtf

 

This thread has nothing to do with my charging system!!!! haha...damnit

 

mine neither but it still misfires and starts up hard lol, did you change your headers too?

 

I have hooker LTs

 

I'm confused, are we talking about a cranking issue or a firing issue?

Here you say it cranks slow. Does it or not?

Also, a screeching sound when you crank it is usually from the starter not having been clearanced to the flywheel correctly. But if the screeching sound comes and goes, then it's a good chance you have a tooth problem on your flywheel. It will screech only when the broken tooth (teeth) on the flywheel are lined up with the starter.

I suggest you check the flywheel, All 153 teeth.