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07-10-2015, 08:52 PM
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#1 |
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Junior Member
Join Date: Oct 2011
Location: WISCONSIN
Posts: 50
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Liked 3 Times in 1 Post
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Starting line hesitation
I have a 80 Camaro 350 H/SA that I am having a problem
with. When the car leaves it goes 2 ft and it sounds like the engine cut out for a tenth of a second for the last 6 runs. The 60ft times are exactly a tenth slower the last 6 runs, at 2 different track But the mph is the same as before this problem. I have a 2 step and I tried with it hook up and not hook up, no difference ANY HELP APPRECIATED BOB KELLER |
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07-10-2015, 09:47 PM
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#2 |
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Member
Join Date: Mar 2003
Location: MA.
Posts: 287
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Re: Starting line hesitation
More info might help. What RPM do you leave the line at? What is the fuel psi before you stage ? What is the fuel psi when it cuts out? Does it recover Quick or slowly rev back up. Have you had the top lid off the q-jet to look inside? Possible fuel psi regulator problem. Or might be ignition miss
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07-11-2015, 01:16 AM
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#3 |
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VIP Member
Join Date: Oct 2013
Location: Gulf Breeze, FL
Posts: 1,651
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Re: Starting line hesitation
Possible fuel spillover on launch?
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Rich Taylor I/SA - 321 |
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07-11-2015, 08:04 AM
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#4 |
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Senior Member
Join Date: Apr 2009
Location: Omaha, NE
Posts: 702
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Re: Starting line hesitation
Which carburetor? Qjet or Holley?
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07-11-2015, 10:34 AM
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#5 |
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Member
Join Date: Nov 2002
Location: Potomac,IL
Posts: 279
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Re: Starting line hesitation
It's either fuel spill over, bad choke pull-off, or secondary door to loose.
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Monte Howard 3209 STK, 3208 SS |
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07-11-2015, 02:40 PM
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#6 |
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Senior Member
Join Date: Jul 2007
Location: East China, MI
Posts: 504
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Re: Starting line hesitation
If it is a Q-Jet could be spill over from too high of a fuel pressure setting.
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Nelson Kowal Stock 345 |
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07-12-2015, 04:14 PM
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#7 | |
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Member
Join Date: Dec 2005
Posts: 252
Likes: 302
Liked 132 Times in 27 Posts
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Re: Starting line hesitation
Quote:
Is the brass plate for metering rods in place? If that slips forward when changing metering rods it will bog with spill-over. Also check choke pull-off. rod |
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07-12-2015, 05:05 PM
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#8 | |
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Member
Join Date: Jul 2012
Posts: 213
Likes: 385
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Re: Starting line hesitation
Quote:
I did not know that it was there and, when I pulled the secondary rods to measure them to resolve a rich condition, it slipped forward. I could not understand how a car, which ran fabulously just two weeks before, could now stall after my burnout and hesitate so bad off the line. As it was my first experience with a Danny Ashley carb, I did not find it until I pulled the top off.
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Thomas NHRA 1959 D/SA |
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Hybrid Mode
