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Old 11-04-2019, 06:22 PM   #1
Fairview
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Default Choke to start all the time?

My 1929 Sport Coupe takes a bit of choke to start even when fairly warmed up. Is that normal?

Carburetor is clean and recently rebuilt, recent ignition parts replaced, timing seems spot on, compression is strong. It just takes a quick pull on the choke, but makes it difficult to handcrank unless the engine was shut down just a minute before. Without a dab of choke it simply won’t start or fire. Position of the GAV valve doesn’t seem to help with starting. Switch to Champion W18 plugs from the original style 3X doesn’t seem to make a difference.

Any ideas for me?

Thanks
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Old 11-04-2019, 06:38 PM   #2
Curtis in MA
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Default Re: Choke to start all the time?

When hand cranking use a cloths pin to hold the choke open to prime it with ignition off.
I think I always choke mine.
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Old 11-04-2019, 06:44 PM   #3
30 Closed Cab PU
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Default Re: Choke to start all the time?

My truck starts that way too. Do not know if it is normal.
I have a wire with a loop on the end onto teh choke plate to pull plate closed when hand starting. The wire goes up to the radiator.
Ignition off, pull closed 2 compressions with the hand crank, push the wire back in , ignition on, motor starts on next hand crank try.
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Old 11-04-2019, 06:54 PM   #4
loubob
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Default Re: Choke to start all the time?

Sounds like it is a carb problem/issue.
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Old 11-04-2019, 07:00 PM   #5
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Default Re: Choke to start all the time?

Should easily start with no choke. Might look for a vacuum leak.
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Old 11-04-2019, 07:01 PM   #6
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Default Re: Choke to start all the time?

It should start warm no choke. 2nd on Vacuum leak.

Last edited by mike657894; 11-04-2019 at 07:08 PM.
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Old 11-04-2019, 07:02 PM   #7
Patrick L.
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Default Re: Choke to start all the time?

Mine is old and tired and acts the same. Once warm it'll start without choke within 1/2 hour most times. More time than that and the right hand is needed. A nano-second of choke at any time is all thats needed.
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Old 11-04-2019, 07:37 PM   #8
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Default Re: Choke to start all the time?

Check your float level. If the fuel level is low in the float bowl it is harder for the engine to draw gas from the jets.
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Old 11-04-2019, 08:10 PM   #9
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Default Re: Choke to start all the time?

Quote:
Originally Posted by Fairview View Post
My 1929 Sport Coupe takes a bit of choke to start even when fairly warmed up. Is that normal?

Carburetor is clean and recently rebuilt, recent ignition parts replaced, timing seems spot on, compression is strong. It just takes a quick pull on the choke, but makes it difficult to handcrank unless the engine was shut down just a minute before. Without a dab of choke it simply won’t start or fire. Position of the GAV valve doesn’t seem to help with starting. Switch to Champion W18 plugs from the original style 3X doesn’t seem to make a difference.

Any ideas for me?

Thanks
Go back to your previous post and research what the GAV and choke are - they are not the same animals even though they share the same knob. If you are familiar with small aircraft engines compare the GAV to the mixture control and the choke to the primer.

John

Last edited by aermotor; 11-04-2019 at 08:16 PM.
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Old 11-04-2019, 08:22 PM   #10
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Default Re: Choke to start all the time?

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Originally Posted by aermotor View Post
Go back to your previous post and research what the GAV and choke are - they are not the same animals even though they share the same knob. If you are familiar with small aircraft engines compare the GAV to the mixture control and the choke to the primer.

John
I don't think the OP is confused about the GAV vs the choke. If all else runs well, whats wrong with a short choke pull when starting? For hand starting, there is a brass wire and ring choke kit you can buy from the vendors that works well and is a great conversation starter. Also looks kind of cool.
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Old 11-04-2019, 08:28 PM   #11
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Default Re: Choke to start all the time?

Our 29 Sport Coupe has always been that way.

Runs great, new Zenith carb, everything new or rebuilt, but needs choke to start.
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Old 11-04-2019, 08:54 PM   #12
Fairview
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Default Re: Choke to start all the time?

Quote:
Originally Posted by aermotor View Post
Go back to your previous post and research what the GAV and choke are - they are not the same animals even though they share the same knob. If you are familiar with small aircraft engines compare the GAV to the mixture control and the choke to the primer.

John
John,

I’m not sure what suggested to you that I don’t know the difference between the function of the choke and the GAV. This is my fourth Model A so I am right familiar with them. This one seems more stubborn than the others as far as ease of starting.

The reason I mentioned the GAV is that I figured the requirement of using the choke is showing a lean condition and the enrichment of the GAV might be helpful, but it seems to make no difference in starting.

Jeff

Last edited by Fairview; 11-04-2019 at 09:15 PM.
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Old 11-04-2019, 09:13 PM   #13
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Default Re: Choke to start all the time?

Mine only needs choking when cold.
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Old 11-05-2019, 11:17 AM   #14
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Default Re: Choke to start all the time?

I do not know if true, but have been told in the past that A's can have their own "personality". As long as; it is running well, starts easily, spark plug reads look good, decent gas mileage, does not stall at stop, settings used are not that important - no worries, drive and enjoy it.
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Old 11-05-2019, 12:59 PM   #15
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Default Re: Choke to start all the time?

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Originally Posted by 30 Closed Cab PU View Post
I do not know if true, but have been told in the past that A's can have their own "personality". As long as; it is running well, starts easily, spark plug reads look good, decent gas mileage, does not stall at stop, settings used are not that important - no worries, drive and enjoy it.




Yep !
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