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Yesterday, 11:05 PM
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#1 |
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Registered User
Join Date: Jul 2024
Location: N.E.P.A.
Posts: 15
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Cold start issue
Old Q-jet 1971. Runs good idles good starts when warm right away. Cannot get it to start cold without a tiny sprits of fast start. Carb rebuilt , settings double checked. There is some primary shaft play but it returns to 650 rpm when I let of the throttle. Is rebushing the shafts really gonna fix this? It doesn't seem like that little bit a vacuum leak would have that much negative affect with choke on during cold start. Anybody got any ideas? Accelerator pumps down both holes (4MV) , no hesitation when the throttle is blipped.
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Yesterday, 11:56 PM
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#2 |
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Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,643
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Re: Cold start issue
When you first pump it to give it some fuel and set the high idle, is the choke closing all the way?
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Today, 12:34 AM
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#3 | |
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Senior Member
 
Join Date: Feb 2009
Location: Northern Nevada
Posts: 7,253
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Re: Cold start issue
Quote:
Does the OP have the original cold start system, thermostatic air cleaner, riser, divorce choke and such?
__________________
Tony 71 Custom Deluxe, SWB, 2WD, 402, A/C. I developed an assembly kit for restoring the (a) truck from the ground up. My build thread, and more on the assembly kit https://67-72chevytrucks.com/vboard/...d.php?t=730025 |
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Linear Mode
