Red Green Jr
Member
On my 78, whenever I would accelerate from a stop, I had to go really slow otherwise it would bog down and occasionally stall. It turns out I fixed it by mistake. When I was checking the spark, it was really weak, so I looked in the distributor and noticed it was all rusted and corroded. So I got a new one, I had a **** of a time getting the old one out and installing the new one, but I noticed that on the old one, the vacuum that advances the spark was seized solid. So whenever I would accelerate, it would pour on the gas but the distributor was still spinning at idle speed so the spark was lagging behind. After I got the new distributor in, I went for a test drive and it was amazing, the throttle response was unbelievable! I figured this might be a fairly common problem so if your truck bogs down a lot or has bad throttle response, check your distributor.