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Old 07-25-2020, 03:47 PM   #41
burnin oil
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Join Date: Jan 2013
Location: Eastern TN
Posts: 1,921
Re: 78 Suburban surging then dies on long grade

You should be able to move the linkage on the green arm to give it quicker accelerator pump shot. Adjusting the secondary isn't to hard if you methodical. Find the right Allen key then turn a given amount, say 1/8 turn and evaluate. Keep track of what you did any it can be reversed. Not really different than the adjustable vac canister. A little extra tension is all thats needed. Don't go crazy there. Its not an idle air screw.
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