Re: 2126 starting issues.....still....
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Forum Ambassador
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This article on the switch is out of an old issue of Motors Manual and has been posted a couple of times. Not sure if it was when you were having issues and might have seen it though.
The mechanism is fairly simple but one of the things that has caused problems for others is if the plastic wedge shaped plunger the contact spring is mounted on is upside down with the long part on top. If that is the case the ball is not able to transmit the proper mechanical action to fully engage the contacts or raise to seal off the port which results in a vacuum leak. The contact spring can also burn or pit and have an intermittent connection with the terminal contacts.
Posted on: 2021/1/30 21:38
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Howard
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Re: 2126 starting issues.....still....
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Home away from home
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Thanks Howard. One more piece to decipher in the process. Carb was rebuilt but not sure if the switch was dismantled and reinstalled. But...the short answer is there should be continuity I guess when the linkage is advanced.
Posted on: 2021/1/30 21:58
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Where principles are involved, be deaf to expediency. (Matthew Fontaine Maury 18th century oceanographer)
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Re: 2126 starting issues.....still....
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Home away from home
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Read the very last paragraph in the posting. necessary to connect battery...
I don't think you get continuity without power on the circuit. You have to turn the key on in the car first for it to start and run. I just made a jumper and by-passed this switch rather than try to make it work. What was once novel, is now nuisance.
Posted on: 2021/1/31 19:43
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Re: 2126 starting issues.....still....
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Home away from home
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Not quite and, in fact, the opposite. Continuity is checked with an ohm meter and is often better with at least one end disconnected so that you know you are checking only the wire you're trying to check. Feeding 6v or 12v into an ohm meter would probably damage it so, of course, you would want the battery disconnected too or take care to not measure a wire where there might be power.
That said, you can check whether a wire has power going through it or not using a light or volt meter which I suppose is testing the continuity, albeit indirectly.
Posted on: 2021/2/1 2:41
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Re: 2126 starting issues.....still....
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Home away from home
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Is it advised using a jumper wire to circumvent the carb start switch to check that the plunger is still correctly oriented because wouldn't there be a vacuum leak if the plunger were upside down? Maybe a leak of no consequence, but still......?
Posted on: 2021/2/1 12:47
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Steve
Old cars are my passion 1951 Packard 200 1953 Packard Clipper Custom Touring Sedan 1955 Dodge Custom Royal Lancer Tri-tone 1966 Rambler Classic 770 Convertible |
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Re: 2126 starting issues.....still....
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Home away from home
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Quote:
The orientation of the plunger shouldn't affect the vacuum. As long as the ball is present and located above the plunger, it should be pulled up in the shaft and block the vacuum intake when the engine is running.
Posted on: 2021/2/1 17:11
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Re: 2126 starting issues.....still....
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Home away from home
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Thanks for the clarification JD.
Steve
Posted on: 2021/2/2 10:26
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Steve
Old cars are my passion 1951 Packard 200 1953 Packard Clipper Custom Touring Sedan 1955 Dodge Custom Royal Lancer Tri-tone 1966 Rambler Classic 770 Convertible |
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Re: 2126 starting issues.....still....
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Home away from home
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I think I know how to check continuity the reference tells how to check it.
Refer to the instructions on how to check, as written above where I referenced, and Howard presented. Since it's basically a switch, when it's "OFF" it won't have "continuity". Only when it's "ON", will current pass. GEEZ!
Posted on: 2021/2/5 15:23
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Re: 2126 starting issues.....still....
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Home away from home
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Quote:
Great saying. A lot of things were tried back in the day when these cars were new. Some worked out, some not so much. I installed a push button starter switch in my 47 Custom parallel with the carb switch. Best of both worlds so to speak.
Posted on: 2021/2/6 13:01
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We move toward
And make happen What occupies our mind... (W. Scherer) |
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