Need an opinion or advise .. I am running a 1940 chevy 1/2 ton pick up with a 216 engine. The engine is out of timing i asume just a little because I got a hit and miss back fire coming out of first gear and second gear but does not happen all the time i been running it like this for just a while because i Havent had time to get it to the shop. Heres where i need some opinion or advise . A while back i noticed a pin hole leak on the radiator on the core just under the top tank. But it wasn’t over heating at all even with it back firing every now and then .Its a huge deal just to pull radiator . I have to break down entire front end and pull off the hood its not a quick pull. So now its over heating and im not sure if its from the pin hole on radiator or the timing issue. I would hate to take it to shop to get it timed and it starts over heating before they can get it timed. Would a small pin hole on top of the radiator cause it to over heat or can i asume its most likely coming from the timing issue. I do see water circulating in radiator and i am not running a thermostat. Never ran a thermostat and never had a over heating issue. What should i do pull radiator and fix pin hole before i put in shop or try and get it timed with the radiator have a pin hole on it ?
