- Jul 22, 2019
This might be kind of long so bare with me. First I have an 85 El Camino with a 305 (not sure if it's the original) I bought it with an aftermarket Edlebrock intake manifold,Holley 750 carb, flow master exhaust with CC delete. I began having an issue with her about a month ago. She ran great and then one day she didn't. She had a tendency to deisel out and when you needed to make a quick get away she would fall flat on her face. But other than that no issues. I have had to replace the starter, alternator. Stupid stuff. Well I ended up running off the road and I blew out a tire. That's all I thought was the issue. Then she started to run like crap. The electronics were cutting out, rough idle, really rough and rough running. So I went to buy a Quadrajet. I put the Quadrajet on and I eventually got it to run but she revs up. The electronics problem was the starter main post was broken. And the rough running I believe was 2 busted spark plugs. The issue is the carb had been messed with so now it's all out of whack. Now I'm pretty sure I have it all dialed in but now she backfires when accelerating, if I try to speed off then she does well until I level the acceleration out then she backfires. I can run her in second up to 50mph and have no issues other then a rough idle. I mean rough. I have no idea what my problem is. I have a new timing chain, I'm going to clean out the carb today, I also have a new complete gasket set for her that I'm thinking about putting on while I'm doing all of this and I hope to get a compression gauge in the next day or 2. I don't know how to use one. But I'll learn. Is there annything I might be missing or any tips. Please. Thank you.