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Old Today, 01:43 AM   #1
dieseldawg142
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Join Date: Jul 2011
Location: back 40, bc
Posts: 3,879
Re: 1991 r3500n 454 cfi, cold start issues....

try the vacuum line from your MAP.
my hose had a small hole in it and my 454 ran like sheet till i found it.
just throwing something out there...
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