carmover Posted December 24, 2019 Share Posted December 24, 2019 How do you adjust the 23 Buick Marval Carb? I don't see any fuel adjustment on it.It is a different animal from my 25. Link to comment Share on other sites More sharing options...
Mark Kikta Posted December 24, 2019 Share Posted December 24, 2019 My 22 is a brass knob under the carb. 1 Link to comment Share on other sites More sharing options...
Brian_Heil Posted December 25, 2019 Share Posted December 25, 2019 (edited) Brass knob top even with end of clicker arm. 3/4 turn out with the screw on the bottom. Believe the book says 1 1/2. Guessing my needle is very worn. All this assumes correct Marvel with correct damper spring and a well sealing flapper valve. Good float and float height and float not loose and rubbing on bowl wall. Edited December 25, 2019 by Brian_Heil (see edit history) 1 Link to comment Share on other sites More sharing options...
carmover Posted December 25, 2019 Author Share Posted December 25, 2019 (edited) 5 hours ago, Brian_Heil said: Brass knob top even with end of clicker arm. 3/4 turn out with the screw on the bottom. Believe the book says 1 1/2. Guessing my needle is very worn. All this assumes correct Marvel with correct damper spring and a well sealing flapper valve. Good float and float height and float not loose and rubbing on bowl wall. Brian I know about the air adjustment under the clicker but my 23 has a cup under the bottom and a float or some kind of plunger in it that goes up and down and Ican't find any fuel adjustment on it .This is a 1923 Buick model 50 sedan which is a master not a standard and has the six cyll engine. Edited December 25, 2019 by carmover (see edit history) Link to comment Share on other sites More sharing options...
Morgan Wright Posted December 25, 2019 Share Posted December 25, 2019 6 minutes ago, carmover said: Brian I know about the air adjustment under the clicker but my 23 has a cup under the bottom and a float or some kind of plunger in it that goes up and down and Ican't find any fuel adjustment on it .This is a 1923 Buick model 50 sedan which is a master not a standard and has the six cyll engine. That cup is a dash pot for the air spring / valve. I don't know what I'm talking about other than I read it on here last week. I don't think you need to adjust it. 1 Link to comment Share on other sites More sharing options...
Brian_Heil Posted December 26, 2019 Share Posted December 26, 2019 Sounds like an earlier carb than a ‘23. 1 Link to comment Share on other sites More sharing options...
carmover Posted December 26, 2019 Author Share Posted December 26, 2019 2 hours ago, Brian_Heil said: Sounds like an earlier carb than a ‘23. 2 hours ago, Brian_Heil said: Sounds like an earlier carb than a ‘23. I'm not sure if it is an earlier carb than a 23 but it was what was on it and it is working pretty good but it has a little white smoke when it is cold and warming up.It clears up when the engine is warm.Someone shared some carb adjusting information that it showed the proper adjustments advancing and retarding the spark and whether and when to open the throttle or not when adjusting and I tried it on the 25 and the engine is running smoother and getting better fuel economy than before.So whatever marval this is I want to adjust it as perfect as possible Link to comment Share on other sites More sharing options...
carmover Posted December 26, 2019 Author Share Posted December 26, 2019 (edited) Hear are some pictures of the carb I have on my 23 Buick maybe someone can identify this marval and shed some light on it as I know nothing about it. Edited December 26, 2019 by carmover (see edit history) Link to comment Share on other sites More sharing options...
Mark Kikta Posted December 27, 2019 Share Posted December 27, 2019 This is my 1922 Carburetor and you can see the fuel adjustment annotated. Looks like yours may be the same. 1 Link to comment Share on other sites More sharing options...
dibarlaw Posted December 27, 2019 Share Posted December 27, 2019 These are the only photos I have of 1926 6 cylinder set ups 1923-55 in Arizona. 1923-54 in Vermont taken back in 2011. Nicely restored 1923-45 from Black Horse Garage in 2010. 1 Link to comment Share on other sites More sharing options...
Jim Milewski Posted December 27, 2019 Share Posted December 27, 2019 This is my 23-6-48 Marvel carb - Happy Holidays 1 Link to comment Share on other sites More sharing options...
carmover Posted December 27, 2019 Author Share Posted December 27, 2019 (edited) 8 hours ago, Mark Kikta said: This is my 1922 Carburetor and you can see the fuel adjustment annotated. Looks like yours may be the same. Mark thanks for the picture. Mine looks exactly like that one and I went down and checked and I found the fuel needle right where it is supposed to be.The dash pot has a ratchet so it must have some kind of adjustment on it. but mine screwed right off and I didn't feel any ratchet to it. Edited December 27, 2019 by carmover (see edit history) Link to comment Share on other sites More sharing options...
carmover Posted December 27, 2019 Author Share Posted December 27, 2019 3 hours ago, Jim Milewski said: This is my 23-6-48 Marvel carb - Happy Holidays Happy Holidays to you too Jim! I noticed on your 23 carb it doesn't have the dash pot on the bottom and I noticed in Larry's pictures that they do not have the dash pot so I must have a 22 carb and maybe a 22 engine in my car.I have had several early 20's experts tell me something didn't look right.One thing is mine doesn't have the oiling ports on the valve covers. 1 Link to comment Share on other sites More sharing options...
Mark Kikta Posted December 27, 2019 Share Posted December 27, 2019 I think the ratchet on the dash pot is just to keep it from backing off. Mine has a gasket so it needs to stay tight. 1 Link to comment Share on other sites More sharing options...
Jim Milewski Posted December 28, 2019 Share Posted December 28, 2019 When you live in the northeast and don't have a heated garage for your cars you search the internet and help fellow enthusiast - it looks like you have a 1922 Marvel model H carburetor 1 Link to comment Share on other sites More sharing options...
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