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05-31-2012, 03:41 PM | #1 |
Registered User
Join Date: Apr 2002
Location: Manitoba, Canada
Posts: 663
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Running Rough - AIR Pump Removal?
My '69 with a 250 L6 is running rough. I rebuilt the carb this spring and very carefully set it to factory specs. I did the timing and idle settings carfully as well. I still get hesitation on accelleration. New plugs, plug cables, points, condenser, rotor, and cap. I know vacuuum leaks could be the problem, so I disconnected the brake booster to see if it was at fault. Can't really tell a difference. Other seals seem to be OK.
The truck came with an original AIR pump, which, outlaw that I am, I removed. I plugged the manifold ports with brass screw-in plugs and put the alternator where the AIR pump used to be. Would removing the AIR pump make a difference in how the truck runs? I'm just throwing it out there because I'm not sure where to go next.
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Present: 2015 Tacoma. Yeah, not a GM, but I love it. 1969 GMC 32,000 - fix, drive, relax, fix... 2019 BMW R1250 GSA - Yahoooooooo 1979 Honda GL 1000 - retro touring at its best. Past: '05 Sierra 4x4 - Had 270,000 KM and running well when it was written-off by a stop sign runner. '94 F-150 from the "F word" company. I'll admit it...good truck. Sold what was left of it for $800 to a guy who came to pick it up at 11:00 PM with cash in hand. Hmm. '79 Sierra Grande (Black) organ donor - perfect rebuildable 4-bolt 350 and a good TH350. '76 Sierra Grande (Orange) - hate isn't too strong a word. Kid who bought it turned it into a hot rod. '68 C-10 R.I.P. - Dad's old truck...too far gone to resurrect. '59 C-50 - with hoist. Truck is gone, wife isn't. Nuff said. |
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