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06-03-2018, 04:40 PM
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#1 |
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Registered User
Join Date: Apr 2002
Location: Manitoba, Canada
Posts: 663
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Need Tune Up Help
Need help tuning up my '69 GMC. Has a 250 w. Manual transmission. Truck came with AIR pollution control that I've removed. I can't get the truck to idle at the recommended 700 RPM. I've turned out the idle mix screw as much as I feel comfortable. Can't get the idle anywhere close.
The sticker says 700 RPM idle at 0 degrees. Do I need to advance the timing without the pollution control?
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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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