The Ford Barn

mike42 · 10-02-2022, 09:12 AM

Had a carburetor rebuilt by Charlie NY awhile back. No problems there as it runs just fine, but at startup I get a lot of black soot from tailpipe that I didn’t have before. What needs to be adjusted ? I’ve emailed Charlie a couple times, but no responses.

Thx……Mike

19Fordy · 10-02-2022, 10:17 AM

Perhaps it's carbon that has built up over time inside the muffler and is now blowing out a little at a time a start up.

Jack E/NJ · 10-02-2022, 01:49 PM

Maybe less choke and/or accelerator pumping at startup would help?

mike42 · 10-02-2022, 04:00 PM

Okay thx !

RKS.PA · 10-03-2022, 07:29 AM

Mike I've had the same experience with black sooty water coming out the pipes on startup. I think it's caused by too rich a mixture on startup and as noted above it could be an accumulation from the time before I installed my Charlie rebuilt carb because now, I'm not getting the discharge.

pistonbroke · 10-03-2022, 11:17 AM

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I got that same vary black soot and water. It got much better when I switched to non ethanol. Tim

petehoovie · 10-03-2022, 12:27 PM

Quote:

Originally Posted by pistonbroke

I got that same vary black soot and water. It got much better when I switched to non ethanol. Tim

Yup, its the 'corn gas'...

Y-Blockhead · 10-03-2022, 04:02 PM

Quote:

Originally Posted by pistonbroke

I got that same vary black soot and water. It got much better when I switched to non ethanol. Tim

Ah, that makes sense. I get the same when I start my '30 Town Sedan. Never thought it might be the gas but everything else is in spec...

Blindhuckster · 10-03-2022, 07:48 PM

I had a similar issue on my 37. I do all my own carb work, so after rebuilding my carb with no real change, I went through the ignition. I had skip rebuild my coil and had Michael at Third Gen rebuild my 11A distributor. Replaced the plug wires and condenser. This got rid of the sooty discharge and cleaned up the plugs to a normal color. Runs great now and no more sooty discharge on my garage floor. Nate

mike42 · 10-04-2022, 07:17 AM

Morning Guys …..

I run non ethanol fuel in my ‘40. It’s called recreational fuel in northern Michigan. I didn’t pump the gas but a couple times and didn’t choke as much and it seems to not smoke as much now.

Huckster I did the very same thing with rebuilt card, rebuilt distributor and rebuilt coil !

I’m going out this morning so I’ll check it again.

Thx……Mike

52flthed · 10-05-2022, 07:15 PM

I have the same black soot spot wherever I start up the truck leaves a black stain 4-5" diameter on the gravel driveway.

mike42 · 10-05-2022, 11:37 PM

What’s normal setting for idling screws ? One full turn or 1 1/2 turns or maybe that doesn’t make a difference ?

Thx

wga · 10-07-2022, 09:28 AM

Mike - do you have a vacuum gauge? These work great to set up a carb, and also timing.

1 1/2 turns is a good place to start.

mike42 · 10-10-2022, 01:34 AM

What ……. No I don’t have a vacuum gauge but probably should get one just to have. I don’t pump the accelerator but a couple times now and it seems to have worked. I also turned screws back a half turn. Seems to have helped a lot.

Thx…..Mike

Mart · 10-10-2022, 07:34 AM

I started my Sedan recently and inadvertently left the choke full on. It started instantly then died. I restarted but there was a hell of a lot of black sooty smoke from at as it struggled to run.

Once I realised what I had done I opened the choke and all was back to normal.

If using choke to start as soon as it starts take as much choke off as you can and get it fully off as soon as possible.

Re the idle mixture screws. 1-1/2 turns is a rough guide to get you started. They should be adjusted to achieve a smooth idle. One might be 1/2 turn in, the other might be 1/4 turn in. They should be adjusted with the engine running. The vacuum gauge method is ideal but just getting it so it sounds as good as you can is ok too. There isn't any fits all setting that would be perfect for every engine and carb.

It sounds like you have it ok now.

Mart.

10-02-2022, 09:12 AM	#1
mike42 Senior Member Join Date: Jun 2012 Location: Gaylord, Michigan Posts: 1,605	Soot from tailpipe at startup. Had a carburetor rebuilt by Charlie NY awhile back. No problems there as it runs just fine, but at startup I get a lot of black soot from tailpipe that I didn’t have before. What needs to be adjusted ? I’ve emailed Charlie a couple times, but no responses. Thx……Mike

10-02-2022, 10:17 AM	#2
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,950	Re: Soot from tailpipe at startup. Perhaps it's carbon that has built up over time inside the muffler and is now blowing out a little at a time a start up.

10-02-2022, 01:49 PM	#3
Jack E/NJ Senior Member Join Date: May 2010 Posts: 2,173	Re: Soot from tailpipe at startup. Maybe less choke and/or accelerator pumping at startup would help?

10-02-2022, 04:00 PM	#4
mike42 Senior Member Join Date: Jun 2012 Location: Gaylord, Michigan Posts: 1,605	Re: Soot from tailpipe at startup. Okay thx !

10-03-2022, 07:29 AM	#5
RKS.PA Senior Member Join Date: Jun 2010 Location: Marana, AZ Posts: 1,194	Re: Soot from tailpipe at startup. Mike I've had the same experience with black sooty water coming out the pipes on startup. I think it's caused by too rich a mixture on startup and as noted above it could be an accumulation from the time before I installed my Charlie rebuilt carb because now, I'm not getting the discharge.

10-03-2022, 11:17 AM	#6
pistonbroke Senior Member Join Date: Feb 2021 Location: Perry Mo. Posts: 485	Re: Soot from tailpipe at startup. Sponsored Links (Register now to hide all advertisements) I got that same vary black soot and water. It got much better when I switched to non ethanol. Tim

10-03-2022, 07:48 PM	#9
Blindhuckster Senior Member Join Date: Mar 2020 Location: Lee's Summit, MO Posts: 101	Re: Soot from tailpipe at startup. I had a similar issue on my 37. I do all my own carb work, so after rebuilding my carb with no real change, I went through the ignition. I had skip rebuild my coil and had Michael at Third Gen rebuild my 11A distributor. Replaced the plug wires and condenser. This got rid of the sooty discharge and cleaned up the plugs to a normal color. Runs great now and no more sooty discharge on my garage floor. Nate

10-04-2022, 07:17 AM	#10
mike42 Senior Member Join Date: Jun 2012 Location: Gaylord, Michigan Posts: 1,605	Re: Soot from tailpipe at startup. Morning Guys ….. I run non ethanol fuel in my ‘40. It’s called recreational fuel in northern Michigan. I didn’t pump the gas but a couple times and didn’t choke as much and it seems to not smoke as much now. Huckster I did the very same thing with rebuilt card, rebuilt distributor and rebuilt coil ! I’m going out this morning so I’ll check it again. Thx……Mike

10-05-2022, 07:15 PM	#11
52flthed Senior Member Join Date: Oct 2019 Posts: 175	Re: Soot from tailpipe at startup. I have the same black soot spot wherever I start up the truck leaves a black stain 4-5" diameter on the gravel driveway.

10-05-2022, 11:37 PM	#12
mike42 Senior Member Join Date: Jun 2012 Location: Gaylord, Michigan Posts: 1,605	Re: Soot from tailpipe at startup. What’s normal setting for idling screws ? One full turn or 1 1/2 turns or maybe that doesn’t make a difference ? Thx

10-07-2022, 09:28 AM	#13
wga Senior Member Join Date: Jul 2010 Location: Yorba Linda, CA Posts: 900	Re: Soot from tailpipe at startup. Mike - do you have a vacuum gauge? These work great to set up a carb, and also timing. 1 1/2 turns is a good place to start. __________________ Henry Ford designed the flathead without the aid of a computer.

10-10-2022, 01:34 AM	#14
mike42 Senior Member Join Date: Jun 2012 Location: Gaylord, Michigan Posts: 1,605	Re: Soot from tailpipe at startup. What ……. No I don’t have a vacuum gauge but probably should get one just to have. I don’t pump the accelerator but a couple times now and it seems to have worked. I also turned screws back a half turn. Seems to have helped a lot. Thx…..Mike

10-10-2022, 07:34 AM	#15
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,755	Re: Soot from tailpipe at startup. I started my Sedan recently and inadvertently left the choke full on. It started instantly then died. I restarted but there was a hell of a lot of black sooty smoke from at as it struggled to run. Once I realised what I had done I opened the choke and all was back to normal. If using choke to start as soon as it starts take as much choke off as you can and get it fully off as soon as possible. Re the idle mixture screws. 1-1/2 turns is a rough guide to get you started. They should be adjusted to achieve a smooth idle. One might be 1/2 turn in, the other might be 1/4 turn in. They should be adjusted with the engine running. The vacuum gauge method is ideal but just getting it so it sounds as good as you can is ok too. There isn't any fits all setting that would be perfect for every engine and carb. It sounds like you have it ok now. Mart.