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Old 07-16-2018, 10:47 AM   #13
lurk
Junior Member
 
Join Date: Feb 2018
Posts: 23
Default Re: 39 Merc hesitating under load...driving me crazy

FIXED!

Thanks for all the input. After much of the input here suggested something to do with plug wires or ignition, I decided to dig back into the distributor.

Initially I wanted to verify that I didn’t have any crossed wires... turns out, the left side distributor cap had a hairline crack in it! Luckily, I had an NOS set sitting in a box. Installed those, problem gone. ZERO hesitation upon acceleration.
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