Been too busy to spend much time tinkering with the 1966 GMC 2503 I bought last winter. I decided to have my mechanic see why she was running so rough. Figured it has to be the points. After all it only has a 305 v6 with only 13,000 miles.
A few days later I call asking if they have the motor out as a joke. He gives priority to peoples daily get to work vehicles over weekend toys (as he should)
A couple days later he calls to tell me the motor may have to come out. The started with a compression test, cylinders 2 & 3 are flat zero and #1 is at 50 pounds.
NOT what I wanted to hear. He stopped right there till he could talk to me.
I was going to have him pull the valve covers and check for problems with the heads. I decided to not have him do that, I figured put that money toward a used engine or repairs.
I brought my '66 home in abject defeat. I decided to pull the valve covers and look for a bent valve or other obvious damage.
The push rod in #1 was a "S" and 3# was tweaked. Time to pull the heads.