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#1 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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Hesitation
I have a hesitation when I hit the gas pedal. Timing is at 10 adv, Hei Ignition, plugs are gapped at 45 and are new. Plug wires are new. I do have a small crack in the passenger side exhaust manifold that is getting replaced with headers com January. An ideas on what it could be?
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#2 |
Registered User
Join Date: Dec 2002
Location: Canada
Posts: 695
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Accelerator pump in the carb?
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1968 Chevy - 292 with a powerglide |
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#3 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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low float level, accelerator pump, weak coil, weak fuel pump, weak ignition pick up...
what is the type of hesitation and does it make any noise(pops or back fire through carb?) is it only on hard accel or only on slow accel
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The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? |
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#4 |
Registered User
Join Date: Apr 2003
Location: missouri city, tx
Posts: 4,486
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cat on manifold?
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70 longbed 496/th400/Ford 9" |
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#5 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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No noise and its a healthy accel. I wouldnt call it a stomp though. And no cat either.
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#6 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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accel pump is what it sounds like. what kinda carb?
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The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? |
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#7 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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Holley 600. 80457-2. I just put a new edelbrock 2101 manifold on it a week ago. I will check the bowls this weekend and see what they are looking like.
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#8 |
Registered User
![]() Join Date: Sep 2003
Location: DFW
Posts: 765
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check the accel pump and you may look and see if you can change the accel pump cams on that carb. may need a different ramp/cam. not a big holly fan but someone else may know.
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The problem with America is stupidity. I'm not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? |
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#9 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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I will do that to. Thanks for the help.
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#10 |
CCRider
Join Date: Feb 2000
Location: Olive Branch,MS,USA
Posts: 2,232
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I not familiar with that Holley number...is it a square bore? If it is are you using edelbrocks plate to put a square bore carb on a speadbore intake? If not you may have a vacuum leak under the carb.
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72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS |
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#11 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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Yep its a square bore carb and I do have the plate for it.
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#12 |
Registered User
Join Date: Jan 2003
Location: Gulfport Ms
Posts: 401
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If all the above doesn't work, look for a worn cam lobe.
EdB |
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