Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile    Log inLog in 

MF50 Cylinder 1 Fouling


 
Post new topic    
View previous topic :: View next topic  
Author Message
SaveMy50
Regular


Joined: 03 Sep 2014
Posts: 40


Report to Moderator

PostPosted: Tue Aug 07, 2018 11:10 am    Post subject: MF50 Cylinder 1 Fouling Reply to specific post Reply with quote

Constantly getting spark plug fouling (black, wet) in cylinder 1. Replaced plugs and wires. No improvement. Even minor backfiring now.

Definitely blue exhaust increasing over last year.

Minor similar fouling on cylinder 3, but not nearly as bad. 2 & 4 are ok.

Appreciate any help.

Side note, did carburetor rebuild last year. Barely started 1st time. Now won't typically start (but will run after bomb starting), so will be removing carb again, but don't see that as the cylinder issue.
 
Back to top
View user's profile
old
Tractor Guru


Joined: 12 Mar 2000
Posts: 79603
Location: Lake of the Ozarks area of MO

Report to Moderator

PostPosted: Tue Aug 07, 2018 11:33 am    Post subject: Re: MF50 Cylinder 1 Fouling Reply to specific post Reply with quote

Sounds like you need to do some simple trouble shooting and stop guessing.
#1 make sure you have a good blue/white spark at the center wire of the distributor cap and at all 4 plugs that will jump a 1/4 inch gap or more. Weak spark will cause those problems.
#2 pull the carb drain plug and make sure you have a good steady flow of gas that will fill a pint jar in less then 3 minutes and yes catch the gas to see if it has water/dirt in it.
#3 when was the last time you serviced the air cleaner and dumped the mud and water out of it and filled it with fresh oil.
 
Back to top
View user's profile
Inno
Tractor Expert


Joined: 11 Nov 2009
Posts: 2953
Location: NW Ontario Canada, Near Beautiful Rainy Lake

Report to Moderator

PostPosted: Tue Aug 07, 2018 1:42 pm    Post subject: Re: MF50 Cylinder 1 Fouling Reply to specific post Reply with quote

So you have two tractors running poorly, this and a 35? Are you getting bad gas?

When it's running, pull each spark plug wire, one at a time and see if it's actually running on all cylinders. My 35 kept fouling #4 due to carbon build up. Pretty sure it's in need of a rebuild. Might also want to check compression.
 
Back to top
View user's profile
Jack in NB
Regular


Joined: 14 Aug 2007
Posts: 210


Report to Moderator

PostPosted: Tue Aug 07, 2018 1:51 pm    Post subject: Re: MF50 Cylinder 1 Fouling Reply to specific post Reply with quote

My OC-3 kept fouling one plug (after about an hour's running) because of weak rings and oil consumption on that cylinder (#4). I replaced that plug last year with one or two heat ranges hotter, and haven't had to clean it since.
 
Back to top
View user's profile
centash
Tractor Guru


Joined: 01 Nov 2014
Posts: 5045
Location: southern ontario canada

Report to Moderator

PostPosted: Wed Aug 08, 2018 4:59 am    Post subject: Re: MF50 Cylinder 1 Fouling Reply to specific post Reply with quote

Broken ring or scored cylinder wall. Sounds like it may be due for an overhaul.
Ben
 
Back to top
View user's profile
rustred
Tractor Guru


Joined: 01 Jul 2009
Posts: 30686


Report to Moderator

PostPosted: Wed Aug 08, 2018 7:26 pm    Post subject: Re: MF50 Cylinder 1 Fouling Reply to specific post Reply with quote

check the compression the post back we cant be guessing. plug corroding and fouling is a sign of a worn out engine.
 
Back to top
View user's profile
Bret4207
Tractor Guru


Joined: 15 Jan 2005
Posts: 10923
Location: St Lawrence Valley, Northern NY

Report to Moderator

PostPosted: Thu Aug 09, 2018 6:15 am    Post subject: Re: MF50 Cylinder 1 Fouling Reply to specific post Reply with quote


Can also be worn valve guide. No seals on the Continental IIRC.
 
Back to top
View user's profile
:   
Post new topic    Yesterday's Tractors Forum Index -> Massey Harris & Massey Ferguson All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  

TRACTOR PARTS TRACTOR MANUALS
Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). We have the parts you need to repair your tractor - the right parts. Our fast shipping, low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

YT Home  |  Forums

Modern View Forum powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters