Leaking carb bowl gasket. - Snowblower Forum : Snow Blower Forums
Reply
 
LinkBack Thread Tools
post #1 of 11 Old 12-12-2015, 04:06 PM Thread Starter
Senior Member
 
jermar's Avatar
 
Join Date: Dec 2014
Location: Queens N.Y.
Posts: 129
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 12
Likes (Given): 2
Likes (Received): 13
Leaking carb bowl gasket.

With upper 50s weather, I decided to start my 4 HP Tecumseh for the season. I have a leaking fuel bowl gasket. Last year it leaked, so I replaced it with a OE Tecumseh Carburetor Carb Bowl Gasket 631028 & 631028A. It worked fine with no leaks. At the end of last season, I shut off the fuel & ran the carb dry. Now it leaks again. I can see fine bubbles as I pump the primer bulb. I tightened the bowl nut very tight. I opened it up, checked the surface & reinstalled. Still leaks. Should I try two gaskets? Do I dare try something like Permatex on the gasket? Thanks for any help.
jermar is offline  
Sponsored Links
Advertisement
 
post #2 of 11 Old 12-12-2015, 04:18 PM
Banned
 
Join Date: Sep 2010
Location: Michigan
Posts: 1,585
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 158
Likes (Given): 95
Likes (Received): 302
Slow up on tightening the nut, that'll cost you more than the gas leaking for sure. If you're sure the gasket isn't kinked or rolled, bowl isn't bent or crimped along the edge. You can easily run a brass brush (i buy the dollar store 3 packs,nylon, stainless and bronze/brass) around the edge of the carb body and the rim of the bowl with the gasket removed and try again. Some folks will take a little stop leak radiator stuff and rub it on the gasket (causes it to swell). I'm betting you have some corrosion on the edge of the bowl or carb body (like white powder?). Or spring for a replacement bowl.
jtclays is offline  
Post Thanks / Like - 0 Thanks, 1 Likes, 0 Dislikes
Likes Grunt liked this post
post #3 of 11 Old 12-12-2015, 06:30 PM
Super Moderator
 
Kiss4aFrog's Avatar
 
Join Date: Nov 2013
Location: Hudson, WI
Posts: 9,136
Post Thanks / Like
Thanks (Given): 510
Thanks (Received): 681
Likes (Given): 3844
Likes (Received): 1477
Garage
You might try some of this if you find the surfaces have a bit of corrosion.



I you have black or ultra copper laying around already others have used those with good results too.

.

.
Make sure the windows are up before the snow plow goes by !!

Please help keep the lights on by subscribing:
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Kiss4aFrog is offline  
post #4 of 11 Old 12-13-2015, 05:11 PM
Senior Member
 
Bob Cat's Avatar
 
Join Date: Jul 2014
Location: Sault Ste. Marie Ontario
Posts: 109
Post Thanks / Like
Thanks (Given): 17
Thanks (Received): 6
Likes (Given): 59
Likes (Received): 26
Check the vent just above the bowl gasket because if that's plugged it'll leak.(see Taryl's video on Tecumseh carbertraitor rebuild on YouTube ...easy to search)
Bob Cat is offline  
post #5 of 11 Old 12-14-2015, 07:00 AM Thread Starter
Senior Member
 
jermar's Avatar
 
Join Date: Dec 2014
Location: Queens N.Y.
Posts: 129
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 12
Likes (Given): 2
Likes (Received): 13
Thanks so much for the extremely helpful advice. I never knew about that vent until I saw the video. Mine was clear. I have Permatex 2A. I went to the tech page where they say it is not to be used with ethanol fuel. I ordered the E friendly version KFrog posted, but ten bucks for two oz, yikes. I also ordered a new [expensive] OE bowl since I've heard of the finish flaking on the cheap ones. Great comment after video: "Working on these carbs is so frustrating I had to be put on medication." LOL
jermar is offline  
post #6 of 11 Old 12-14-2015, 08:13 AM
Banned
 
Join Date: Feb 2014
Location: Newington, CT
Posts: 2,029
Post Thanks / Like
Thanks (Given): 32
Thanks (Received): 92
Likes (Given): 446
Likes (Received): 148
donyboys a bit more reliable
43128 is offline  
post #7 of 11 Old 12-14-2015, 08:36 AM
Senior Member
 
bad69cat's Avatar
 
Join Date: Nov 2015
Location: Cedar Rapids, Iowa
Posts: 1,237
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 88
Likes (Given): 127
Likes (Received): 277
LOL - it's not leaking, she's just marking her turf! ;>P



bad69cat is offline  
post #8 of 11 Old 12-16-2015, 06:09 PM
Senior Member
 
Join Date: Dec 2012
Location: Marlborough, MA
Posts: 697
Post Thanks / Like
Thanks (Given): 0
Thanks (Received): 10
Likes (Given): 0
Likes (Received): 35
I'd pull the bowl, check the carb for corrosion, check the bowl for roundness, and maybe put the bowl up on something and stretch the bottom down a little so it pushes up into that gasket more. Also, the gasket could have shrunk from being dry.

'77 Ariens 924032 "Brick House" Re-Powered with a TEC 10HP and oversize auger pulley
nt40lanman is offline  
Post Thanks / Like - 1 Thanks, 0 Likes, 0 Dislikes
Thanks jermar thanked for this post
post #9 of 11 Old 12-17-2015, 10:23 AM Thread Starter
Senior Member
 
jermar's Avatar
 
Join Date: Dec 2014
Location: Queens N.Y.
Posts: 129
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 12
Likes (Given): 2
Likes (Received): 13
Interesting thought about the gasket shrinking. I only last year added a fuel shutoff valve. The carb surface had no corrosion. The gasket that was new last year looked fine. The old bowl looked good too. I wonder if I would have been better off leaving it filled with treated fuel like I'd been doing for 20 years. I installed a new bowl w a new gasket and lightly coated them with Permashield noted above. I ran it, and now have no leaks & it runs fine. I plan to drain the fuel again at season end & hope I don't have to go through this again next year. Thanks to all for the helpful insight.
jermar is offline  
post #10 of 11 Old 12-17-2015, 10:41 AM
Banned
 
Join Date: Sep 2010
Location: Michigan
Posts: 1,585
Post Thanks / Like
Thanks (Given): 3
Thanks (Received): 158
Likes (Given): 95
Likes (Received): 302
Just a thought, you may be in an area where your fuel sucks. My oldest son has an E430 Benz that runs around the UP of Michigan and spends most of it's time parked on MTU campus. If he cheats and doesn't go to Shell to get their premium, he has all kinds of issues. There is no Benz dealer near him but a very smart service guy we found through friends gave us the scoop on UP gas. Lots of private brand stations up there that buy gas from the lower part of MI. There are stations that deal in outdated gas. Long story short, he gets gas from a known source and hasn't had issues (other than a design flaw of of the 210 body with window regulators)
jtclays is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Snowblower Forum : Snow Blower Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome