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Old 06-25-2013, 10:48 PM
Gen1dak Gen1dak is offline
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Join Date: Aug 2011
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Vehicle: 1990 RamCharger
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Engine: 1988-1991 318ci (5.2L) LA V8 140hp
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Man, it's worse than I thought. I'm hearing some mis-firing or something in there, surging too. Still a good idea to replace the ignition stuff like we've discussed. I think you're still having a vacuum leak. Start with the carb as suspect number one. If those idle mix screws are ineffective, you definitely have a vacuum leak, most likely from galling in the carb body around those bleeds. Not knowing the history of that carb it's hard to say, but it happens. The sound coming from the carb is all wrong, even for a stock engine. It just sounds bad. Idling way too high, which can also indicate a vacuum leak. That thing should sit there and purr silky smooth at 650 rpm idle in gear like it's nothin'.
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