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Thread: half throttle stumble help!??
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08-07-2007 #21
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problem solved!
well guys last night i retorqed the headgaskets and added a can of coolant sealant for ins and that took care of that problem, then i changed the power valve to a 7.5 and up'd the jets a bit.....started it up and tested it and it still had a stumble, so for giggles we set the sqiurters to zero lash....bingo!!! stumble gone!!! before that it was set at .15 as speced by holley....wierd. anyway seems good, now if i can get some nice weather for weds i'll see what she can do......
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08-07-2007 #22
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I am sure the Accelerator pump lash was the final step, but I think the other items will really help the overall power and drivability of the car.
Glad you got it fixed.Nick R.
69 Camaro - 383, 700R4, 12 bolt 3.55, Hotchkis, Bilstein, Global West, Morris Classic
08 HHR SS - Still Stock for now
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08-07-2007 #23
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while im sure every little thing helped...before i changed the accel pump lash it still had the stumble and this was after the other changes....anyway now it looks as if im gonna get rained out for the track...oh well maybe next week!
08-14-2007 #24
Starting The Transformation
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How you making out Jason?
All set?
08-15-2007 #25
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it seems good i honestly only got to take the car for one little spin, i got rained out the day i was gonna go to the strip...hopefully i'll put some miles on her this weekend!!!
08-20-2007 #26
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so all that stumble was the wrong set up for the accelerator pump?? I need to go check mine now!!!
08-21-2007 #27
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i wouldnt say it was a wrong accel pump, but i kept setting it to holley spec and it had a continued stumble, i set it to zero and it was gone! i also changed jetting and powervalves several times they helped a bit but 80% of it was the accel pump adjustment....ya i know wierd!
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