Forum: Model A (1928-31)
05-18-2024, 12:48 PM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
I sprayed WD-40 around the obvious joints (carburetor mount, intake manifold vacuum port, intake manifold/block joints) but I didn’t see any change in idle speed.
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Forum: Model A (1928-31)
05-18-2024, 12:46 PM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
Yes, I had the timing advanced. I thought I read that somewhere. I’ll need to read the owners manual again.
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Forum: Model A (1928-31)
05-18-2024, 09:39 AM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
Oh, okay. Like I said, I’m a newbie on fuel systems. Thanks.
With the vacuum gauge attached to the manifold, the engine did want to stall when closed to near zero. I didn’t see signs of stalling...
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Forum: Model A (1928-31)
05-18-2024, 09:08 AM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
How many miles will it likely take before I should check the plugs for carbon? If it’s rich, will it show up immediately on the plugs? Or will it take a while?
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Forum: Model A (1928-31)
05-18-2024, 09:07 AM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
This is the first time I’ve ever used a vacuum gauge as well as the first time I’ve done anything with a Model A carburetor. (The fuel system is not my forte.). Does 45-50 with the idle mixture screw...
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Forum: Model A (1928-31)
05-18-2024, 09:04 AM
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Replies: 32
Views: 872
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Forum: Model A (1928-31)
05-17-2024, 03:19 PM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
The wiper vacuum line itself does not seem to have a leak. I don’t know how to test the wiper body itself. This is 3 turns open measured at the wiper vacuum line at the wiper body.
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Forum: Model A (1928-31)
05-17-2024, 03:10 PM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
This is 3 turns open.
https://youtu.be/pzpxulmkFEQ?feature=shared
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Forum: Model A (1928-31)
05-17-2024, 02:56 PM
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Replies: 32
Views: 872
Idle Mixture Screw
There may be a slight vacuum leak in the wiper. When I warmed up the engine and idled at 500, I took this video. Is this helpful? This video is with the idle mixture screw 1-1/2 turns open. With the...
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Forum: Model A (1928-31)
05-17-2024, 11:24 AM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
Yeah, I missed that. It’s a Zenith. Thanks for pointing that out.
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Forum: Model A (1928-31)
05-16-2024, 08:52 PM
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Replies: 32
Views: 872
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Forum: Model A (1928-31)
05-16-2024, 08:51 PM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
I’ve had the car for almost 5 years, and the GAV never has done much; the car always ran fine without having to adjust the GAV. (That had me scratching my head because I’ve read quite a number of...
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Forum: Model A (1928-31)
05-16-2024, 08:44 PM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
Yes, I did start at 1-1/2. I need to check on a possible vacuum leak.
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Forum: Model A (1928-31)
05-16-2024, 08:42 PM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
Hmmm… I have a vacuum wiper that never has worked all that great. A vacuum leak could be a possibility.
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Forum: Model A (1928-31)
05-16-2024, 07:44 PM
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Replies: 32
Views: 872
Re: Idle Mixture Screw
Thanks. I’ll be really frank. I don’t see much difference between fully closed and three turns open. This carburetor was rebuilt by a well known rebuilder on this forum; so, I’m assuming it was...
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Forum: Model A (1928-31)
05-16-2024, 06:35 PM
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Replies: 32
Views: 872
Idle Mixture Screw
I swapped out my carburetor for a rebuilt one, and I’m trying to adjust it. I’m a newbie at this. I’ve been working through the Les Andrews book, but I’m still unsure which direction is more lean and...
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Forum: Model A (1928-31)
05-14-2024, 04:19 PM
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Replies: 37
Views: 1,333
How many miles should spark plugs last?
Very interesting. Thanks for sharing. If I applied the 10,000 mile rule to Champion 3X plugs, that would get pricy. I think I’ll stay with the Champion 518s (W18s).
...
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Forum: Model A (1928-31)
05-13-2024, 06:46 PM
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Replies: 37
Views: 1,333
How many miles should spark plugs last?
The reason I was reluctant to change plugs was that I was looking for the culprit that caused the issue in the first place. I was thinking replacing the plugs could mask some other problem that I had...
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Forum: Model A (1928-31)
05-13-2024, 06:44 PM
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Replies: 37
Views: 1,333
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Forum: Model A (1928-31)
05-13-2024, 03:02 PM
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Replies: 37
Views: 1,333
Re: How many miles should spark plugs last?
Good idea. #4 was the culprit. Now, I’ll change the rest of them.
For what it’s worth, I’m moving from Motorcraft TT10 plugs to Champion 518 (W18) plugs. The electrodes on the new plugs are much...
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Forum: Model A (1928-31)
05-13-2024, 12:18 PM
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Replies: 37
Views: 1,333
Re: How many miles should spark plugs last?
Wow. Interesting information.
I do recall spark plug cleaners from my teenage days. Even K-Mart sold some sort of cheapie, dumbed down device “for the masses.” I think it looked something like...
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Forum: Model A (1928-31)
05-13-2024, 10:34 AM
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Replies: 37
Views: 1,333
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Forum: Model A (1928-31)
05-13-2024, 10:15 AM
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Replies: 37
Views: 1,333
Re: How many miles should spark plugs last?
Yeah, I agree. Newer cars can run extended periods of time on plugs without maintenance. I have 108K on my 2012 Honda Odyssey plugs and 118K on my 2008 Mazda Miata plugs. I have not cleaned or gapped...
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Forum: Model A (1928-31)
05-13-2024, 08:16 AM
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Replies: 37
Views: 1,333
How many miles should spark plugs last?
Thanks for the response. However, this is not a matter of me being cheap. I already bought a set of plugs, but I haven’t had time to install them yet. (I’m thinking the new plugs will likely “fix”...
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Forum: Model A (1928-31)
05-13-2024, 04:21 AM
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Replies: 37
Views: 1,333
Re: How many miles should spark plugs last?
Was the spark plug tester somewhat similar to this?
Spark Plug Tester Dual Holes, Automotive Engine Ignition Coil Tester 0-6000rpm Working Frequency, Car Spark Tester Tool with Protective Cover...
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