new deep cycle high amp battery, new alternator putting out 13.25 volts and my car still wont start if i let it sit for more than a couple of days.
i put the new battery in drove it for 3 days let it sit for 3 more then wha wha wha wha... nothing! took the battery in to be tested and they said it was at full strenght so i popped the clutch drove for 20 min. started it again then went home, next morning same thing.
so i have 4 theories, tell me what you think.
1) the starter motor is weak or failing or the solenoid is pooping out.
2)i have a battery drain that i dont know about and it is sapping my battery (but that doesnt make sense because it does this with a full charged battery too).
3)vapor locked?
4)bad connection between battery and starter?

also i got under my car today and found a big round hole (size of a quarter) on the bottom of the bell housing of the tranny and i could see right up to the fly wheel or whatever it is called that the starter shoots out and grips on to.
it didnt have threads like a bolt was missing so i am wondering if this is supposed to be open like that or should it be plugged and could this have anything to do with my starter issues?
thanx
corey

 

oh yeah! one more thing.
i get popping and slight back fires when i decellerate or shift gears at high rpm (above 7k) and my gas mileage is terrible, like 15 mpg!
so si this a sensor issue or vacuum doohickey or maybe i just drive too hard?

 

yeah!

 

buuuump

 

the hole in the bell housing is supposed to be there. sounds like leaky injectors to me....

 

o and the popping and backfires could be due to your tps.