theres a noise that i keep hearing when i rev my motor. i jacked up my car followed the noise and it came from the oil pan. can it be my fly wheel being loose? after i did an axel swap and fluid change its kinda hard to get into my gears. sometimes when after i put it in reverse i cant get into my gears so i would have to turn off my engine and start it while im in 1st. but after i get pass that part everything is smooth shifting. can it be my clutch going out. oh yea sometimes when im in first gear and i hold the clutch in, my car boggs like if its going to die. help please