idling

Hey y'all, got a question! My '94 has an occasional knock when idling, but all I have to do is rev the engine for a second and it stops. I change her oil every 3-4k miles and there's no leaks I can see. No engine lights on, despite sitting at >340k miles. What could be causing this, and why...

When I start my '85 up it has a small "tick" which gets worse when you give it gas, when idling after a few mins gets loud. There is oil slung all on the right side of my motor and on the air hoses, coolant hoses and everything in the vicinity, afraid to drive it was wondering if anybody could...

My truck is an 85 2.3L EFI 4 speed auto, I just done a tune up on it but now when its idling in park the oil light just barley flickers when you put it in drive it comes on bright but going down the road its off but as soon as you come to a stop its back on gotta hold your foot on the gas just a...