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Old 07-16-2013, 12:44 PM   #3
sKnNyPpY
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Join Date: Sep 2012
Location: Columbia, SC
Posts: 549
Re: Engine running rough

Check your grounds aren't broken or at least clean them up. Get the auto parts store to trickle charge your battery so it's nice and fully charged. Check your vacuum hoses for cracks. All that is basically free. Fuel and air filters, oil change and plugs are cheap. I also just got a $25 vacuum gauge that can help diagnose several engine problems and it came with instructions. After that HEI and if you haven't installed the alternator yet get one that is internally regulated not externally. The local parts place switched mine out when I still couldn't get the new externally regulated one and regulator to charge. HAVE FUN!

Also check your fusible link and wiring from the battery to the connector on the passenger side fender wall and wires going to the starter and the cab. I had problems there after grounding out my alternator. Cheap fix $4 for fusible link and little more for new wires if they're burned up.
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71 GMC 1500 Super Custom LWB
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Last edited by sKnNyPpY; 07-16-2013 at 12:50 PM.
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