Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Farmall & IHC Tractors Discussion Forum

F-14 Starting Problem (little long)

Welcome Guest, Log in or Register
Author  [Modern View]
Dave Allgire

06-10-2016 14:43:59

Report to Moderator

Due to excessive blowby and very little power to move itself, I replaced the sleeves, pistons, and rings with a 3 1/8 kit. I also had new valve guides put in the head. PROBLEM It ran for about 5 minutes, not good but it ran. I shut it off and now all it wants to do is backfire through the carb and does not want to fire like it should. The tractor WAS running before any work was done.

The magneto was NOT removed and the timing is correct at TDC.

The valves have been adjusted three times.

It now has new Autolite 3706 spark plugs.

It now has a new distributor cap and plug wires. I've verified the plug wires are NOT crossed.

The carb has been removed, cleaned, new float valve and seat. The fuel mixture screw was NOT adjusted.

I've installed a different magneto and still have the same results.

The crank and cam were NOT disturbed.

All of the valves are operating correctly and the intake and exhaust are closed when #1 is at TDC for timing

I've restored 2 F-12's and 3 F-14's and this one has me stumped. Knowing how the cam gear is fastened to the end of the cam and how it is driven from the crank I don't see how it could have gotten out of time. But is that what I need to do next? Pull the front cover and have a look? Any ideas?

[Log in to Reply]   [No Email]
Charlie M

06-10-2016 17:52:44

Report to Moderator
 Re: F-14 Starting Problem (little long) in reply to Dave Allgire, 06-10-2016 14:43:59  
Have you checked compression. If its a valve you won't have any compression on at least one cylinder and then you will know where to go next.If you took the engine to a shop how do you know they didn't take off the mag and put it back 180 degrees out of wack. I would make sure its firing on #1 cylinder.

[Log in to Reply]  [No Email]
Dave Allgire

06-10-2016 17:20:33

Report to Moderator
 Re: F-14 Starting Problem (little long) in reply to Dave Allgire, 06-10-2016 14:43:59  
My local machine shop that does all of my work just put in the valve guides because I thought I had a valve sticking. When I picked up the head, he pushed each valve down by hand. I'm ruling out sticking valves. In cranking the engine over (electric start) all of the valves operate correctly. They are adjusted to .015 cold.

[Log in to Reply]  [No Email]

06-10-2016 16:48:24

Report to Moderator
 Re: F-14 Starting Problem (little long) in reply to Dave Allgire, 06-10-2016 14:43:59  
what kind of valve guides ? I also suspect sticking valves , I have had issues with Chinese valve guides don't know what they are putting in the metal but seem to expand way more than the originals when heated up , I had to ream them out sloppy loose to get them to quit sticking .

[Log in to Reply]  [No Email]

06-10-2016 15:53:48

Report to Moderator
 Re: F-14 Starting Problem (little long) in reply to Dave Allgire, 06-10-2016 14:43:59  
New valve guides were tight and are hanging the valves, galled up in the first run.

[Log in to Reply]  [No Email]

06-10-2016 16:40:43

Report to Moderator
 Re: F-14 Starting Problem (little long) in reply to 36F30, 06-10-2016 15:53:48  
That would be why I don't run a new engine unless I am ready to run it an hour. With tight tolerances there is lots of friction and heat build up. If you run it for a while that eases. Before I made this change I ran an engine about that long and shut it down. It was locked up tight as a drum when I went to restart it. My engine guru at the time told me about this situation and got it unstuck, but I have thought of that advice every time since. That engine was still running last I knew but it had a bearing that had an elongated dowel pin hole because of it. There was about 1/6 of a turn on the crank where the bearing followed before the pin caught it. I'm with stuck valve(s).

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums

Copyright © 1997-2023 Yesterday's Tractor Co.

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

Website Accessibility Policy