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In this Discussion
- Ol racer November 2008
- rich cummings November 2008
- Ted W November 2008
Holley secondary not opening
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Hello
I have a 350 chevy engine (not sure the year, maybe 70 -73) with a 670 Holley carb and the secondaries will not open. they work fine if I manually pull on the linkage with hardly any resistance at all. I also looked at and tested all the vacuums and vacuum diaphragms and everything was fine. No tears in the diaphragm or anything. any ideas on why it wont automatically open using the vacuum? -
I dont think you can pull enough vacume leaning over a fender and reving. I always tested my vacume secondarys by placing a dab of grease on the secondary 'stop' then road tested.
Afterward the the vacume linkage made a 'shiny spot' in the grease verifying secondarys went to wide open.... -
Ron is right -- and thats a neat idea useing the grease--
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Do you have a split or open plenum manifold?
