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Discussion Starter · #1 ·
Moved my CJ7 out of the garage and parked it. About 5 hours later went to pit it back in the garage and it backfires through the carburetor like a popcorn popper. Initially thought it was ignition related took off the cap and found a hairline crack, I have replaced the spark plugs, spark plug wires, distributor cap and rotor, along with the ignition module and the coil. Distributor is bolted down tight so the timing didn’t change. Compression on all cylinders is 125 to 145 psi. Any ideas?
 
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