I just got a 55 jeep cj5. Has chevy running gear. (Dana 44s and four speed) it recently started backfiring out of the intake on one cylinder. I backed the timing off. Cleaned the carb. Didn't help. The lifters also are noisy so I pulled the valve cover on the pass. Side because that's the side its backfiring from and found that only one rocker is getting oil. The furthest forward one was shooting oil. Sound like a bad lifter? I pulled one spark plug at a time and it made no difference on the backfiring. Anyone know what's going on? Im pulling the intake tonight because im swapping on a four barrel anyway. I also have a 500 mile shortblock I could rob parts from or swap in if need be.
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