Happy Easter and welcome to Packard Motor Car Information! If you're new here, please register for a free account.  
Login
Username:

Password:

Remember me



Lost Password?

Register now!
FAQ's
Main Menu
Recent Forum Topics
Who is Online
147 user(s) are online (91 user(s) are browsing Forums)

Members: 0
Guests: 147

more...
Helping out...
PackardInfo is a free resource for Packard Owners that is completely supported by user donations. If you can help out, that would be great!

Donate via PayPal
Video Content
Visit PackardInfo.com YouTube Playlist

Donate via PayPal



(1) 2 »

Detroit Model 51 carburetor - massive fuel leak
#1
Just can't stay away
Just can't stay away

Stephen Templeton
See User information
I'm getting my 1931 840 back in starting condition. I'm working on several issues, but I had the carburetor rebuilt with a rebuild kit from pac-carbs.com, and now I've got a massive leak. It looks like the bowl is overfilling, and I probably need to adjust the float. Any other ideas- The 2 minute video of the start and massive leak can be seen with this Vimeo link:

https://player.vimeo.com/video/708774529?h=90cdc93358[/url]

Thanks for your input!
Stephen

Posted on: 2022/5/11 13:55
 Top  Print 
 


Re: Detroit Model 51 carburetor - massive fuel leak
#2
Home away from home
Home away from home

West Peterson
See User information
Are you using gravity feed, or do you have an electric fuel pump connected?

Per Parker Roaf: It looks, at first glance, that the float is sunk or the needle is not seating fully in its seat

Posted on: 2022/5/11 14:33
West Peterson
1930 Packard Speedster Eight Runabout (boattail)
1940 Packard 1808 w/Factory Air
1947 Chrysler Town and Country sedan
1970 Camaro RS

http://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=4307&forum=10

http://aaca.org/
 Top  Print 
 


Re: Detroit Model 51 carburetor - massive fuel leak
#3
Just can't stay away
Just can't stay away

Stephen Templeton
See User information
West- thanks for your reply. I do have an electric prime pump, but the massive leak is occurring using only the stock mechanical fuel pump.
Stephen

Attach file:



jpeg  IMG_3519.JPEG (212.22 KB)
184962_627c116e9b2ce.jpeg 1920X1440 px

Posted on: 2022/5/11 14:41
 Top  Print 
 


Re: Detroit Model 51 carburetor - massive fuel leak
#4
Home away from home
Home away from home

West Peterson
See User information
I keep forgetting that the 1931 models were fitted with mechanical pumps (vs vacuum).

Posted on: 2022/5/11 14:48
West Peterson
1930 Packard Speedster Eight Runabout (boattail)
1940 Packard 1808 w/Factory Air
1947 Chrysler Town and Country sedan
1970 Camaro RS

http://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=4307&forum=10

http://aaca.org/
 Top  Print 
 


Re: Detroit Model 51 carburetor - massive fuel leak
#5
Home away from home
Home away from home

West Peterson
See User information
I'd check to see if the float is sinking, as well as making sure the needle is fully seated.

Posted on: 2022/5/11 14:52
West Peterson
1930 Packard Speedster Eight Runabout (boattail)
1940 Packard 1808 w/Factory Air
1947 Chrysler Town and Country sedan
1970 Camaro RS

http://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=4307&forum=10

http://aaca.org/
 Top  Print 
Like (1)
 


Re: Detroit Model 51 carburetor - massive fuel leak
#6
Home away from home
Home away from home

Greenfield
See User information
Yikes that is one helluva leak! Its almost as if there is no fuel bowl needle in there at all. I'm in agreement; perhaps the float is sunk or the needle is getting bound up somewhere.

I have an 8th series with a DL 51 (standard) and what I do after its been sitting a while is to prime the cylinders with a tablespoon of gasoline, then try to start it. Also, when starting, only hit the accelerator as the engine is turning over (right foot on the starter button, left foot working the gas pedal). If you hit the gas on an updraft carb absent starting, the fuel falls down and drains out and you loose the effectiveness of fuel vapor entering the cylinders, at least this has been my observation.

Posted on: 2022/5/13 16:54
 Top  Print 
Like (1)
 


Re: Detroit Model 51 carburetor - massive fuel leak
#7
Home away from home
Home away from home

1929PackardGuy
See User information
Another vote for a sunk, or non-existent fuel float. And another agreement on pumping that pedal. Does you no good at all to pump the gas pedal on an updraft carb unless the engine is turning. Without the upward suction of the engine turning, all you're doing is creating a bigger problem by pushing gas out into the carb with nowhere for it to go.

Posted on: 2022/5/17 12:00
 Top  Print 
 


Re: Detroit Model 51 carburetor - massive fuel leak
#8
Home away from home
Home away from home

West Peterson
See User information
There is a throttle on the steering column, so using your left foot on the floor pedal is really not needed.

Posted on: 2022/5/17 12:08
West Peterson
1930 Packard Speedster Eight Runabout (boattail)
1940 Packard 1808 w/Factory Air
1947 Chrysler Town and Country sedan
1970 Camaro RS

http://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=4307&forum=10

http://aaca.org/
 Top  Print 
 


Re: Detroit Model 51 carburetor - massive fuel leak
#9
Just can't stay away
Just can't stay away

Stephen Templeton
See User information
Float was fine and the needle seats perfectly well, but still leaking. I spoke with Scott Henningsen of pac-carbs.com, and he said one of the most common causes of leaks is due to warping or pin holes in the pot metal lower section leading to float bowel over fill. I’m going to send the carburetor to him to rebuild as he has manufactured all the replacement parts needed. Thanks for everyone’s input!

Posted on: 2022/5/17 19:49
 Top  Print 
 


Re: Detroit Model 51 carburetor - massive fuel leak
#10
Home away from home
Home away from home

Greenfield
See User information
That appears to be a 32 carburetor, as the tube from the float bowel cover to the throttle choke is missing.

Posted on: 2022/5/21 17:12
 Top  Print 
 




(1) 2 »




Search
Recent Photos
Photo of the Day
Recent Registry
Website Comments or Questions?? Click Here Copyright 2006-2024, PackardInfo.com All Rights Reserved