[S-mk3-B]

So I was driving my 89 supra cruising around 50mph and started to notice a knocking or banging coming from my engine, so i pull over and the car is idle and its making a knocking sound coming from the engine. Didnt want to drive it all the way back home so i got it towed the 7 miles back. Im pretty sure its rod knocking, so any suggestions or tips? Really trying to get it fixed in the most money efficient way. Could probably post a video if thats better, Thanks for reading!