TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

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

Farmall & IHC Tractors Discussion Forum

Missing Farmall H Engine

Welcome Guest, Log in or Register

Author

stkman_tn

05-09-2008 14:39:35

Report to Moderator

Last week my H started missing on #1 an #2 cylinders. I have adjusted the valves and regapped the points, cleaned the sediment bowl and cleaned and regapped the spark plugs. A compression check shows 85 lbs on all cylinders except for #2 and it is 90 lbs. Can fouling two plugs come from running too rich and if so why just #1 and #2?

[Log in to Reply] [No Email]

Wayne in MN

05-10-2008 05:59:00

Report to Moderator

Re: Missing Farmall H Engine in reply to stkman_tn, 05-09-2008 14:39:35

First check if you have a decent spark from the coil. (strong, bright blue and at jumps at least 1/4" gap) A friend ran for a year with problems like yours before calling for help. Turned out the coil was so weak that it couldn't produce a decent spark.
Check the simple things first!

[Log in to Reply] [No Email]

edward_m

05-09-2008 21:37:19

Report to Moderator

Re: Missing Farmall H Engine in reply to stkman_tn, 05-09-2008 14:39:35

Fouling could have a simpler answer than might first come to mind. It may not be plugs, or the electrical system at all.

Have you checked the valve guides in the head?

I have a '40 H that I could not keep from fouling the number 2 cylinder plug: tried plugs, cables, points, and it still fouled. Sounded like a John Deere when it ran. Compression was never a problem, and I was ready to use her as a 'moble parts supply' for another tractor.

On the advice of one older and wiser than I (my father), I replaced the head with one from a different engine, and low and behold, it runs as smooth as a sewing machine, with nice clean plugs.

Turns out the valve guides were worn on the old head, and were letting oil leak in to the cylinder, resulting in fouled plugs. I'm not saying thats you're problem, but it sounds suspiciously close to it.

[Log in to Reply] [No Email]

edward_m

05-09-2008 21:49:22

Report to Moderator

Re: Missing Farmall H Engine in reply to edward_m, 05-09-2008 21:37:19

.....and before anyone jumps me with, "the compression test would show that", remember that the valves are CLOSED when the piston is on the upstroke, so unless the valve doesn't seal, you'll show good compression.

Its on the DOWN stroke, when the intake valves are open, that it may be literally sucking oil through the valve guides into the cylinder, resulting in a fouling problem that won't go away.

Pull the valve cover, remove the rocker arm assembly, and see if you have play in the intake valves: mine were bad enough that you could see the play in the guide.

[Log in to Reply] [No Email]

dave guest

05-09-2008 19:48:53

Report to Moderator

Re: Missing Farmall H Engine in reply to stkman_tn, 05-09-2008 14:39:35

New wires ain't always good wires. Check with ohmmeter. Copper should be so close to zero. Carbon couple thousand ohms per foot, usually. Years ago I had a set from Sears and sawbuck, every one was open, copper wires. Crimping job on ends was bad. Same with some boat motors.

[Log in to Reply] [No Email]

glennster

05-09-2008 18:22:57

Report to Moderator

Re: Missing Farmall H Engine in reply to stkman_tn, 05-09-2008 14:39:35

i am having the same problem with one of my m's. fouled 2+3, had 386 autolites, switched to 3116's, 1 and 2 fouled. cleaned em switched em , and they fouled in the other cylinders. i picked up a set of 388 autolites, so far all is running ok. looks like both boxes had 2 bad plugs in each box. never had that happen before.

[Log in to Reply] [No Email]

the tractor vet

05-09-2008 16:14:22

Report to Moderator

Re: Missing Farmall H Engine in reply to stkman_tn, 05-09-2008 14:39:35

Have you taken a real close look at the cap for any hairline cracks or build up on the polls .How much slop in the shaft what does the end of the rotor look like.

[Log in to Reply] [No Email]

stkman_tn

05-09-2008 16:22:07

Report to Moderator

Re: Missing Farmall H Engine in reply to the tractor vet, 05-09-2008 16:14:22

It's a new cap and rotor but tried yesterday with the old ones and same thing. I was thinking blown head gasket until I checked the compression so I thought I'd ask here. The old plugs #1 & #2 I swapped with new plugs and she runs fine. As far as the shaft I haven't went that far yet. Thanks again

[Log in to Reply] [No Email]

TomH in PA

05-09-2008 16:09:13

Report to Moderator

Re: Missing Farmall H Engine in reply to stkman_tn, 05-09-2008 14:39:35

Try starting it at night, then turn off the lights and see if it's arcing anywhere. Could be the wires breaking down.

[Log in to Reply] [No Email]

stkman_tn

05-09-2008 16:16:17

Report to Moderator

Re: Missing Farmall H Engine in reply to TomH in PA, 05-09-2008 16:09:13

Thanks Tom but all are new wires just replaced last year. That was my first thought too.

[Log in to Reply] [No Email]

Janicholson

05-09-2008 14:45:23

Report to Moderator

Re: Missing Farmall H Engine in reply to stkman_tn, 05-09-2008 14:39:35

Yes it can, simple test, put the missing plugs in three and 4 start it and run it if the miss follows the plugs, put some autolites or AC plugs in it, and see if there is a cure. JimN

[Log in to Reply] [No Email]

stkman_tn

05-09-2008 15:51:38

Report to Moderator

Re: Missing Farmall H Engine in reply to Janicholson, 05-09-2008 14:45:23

Also she already had autolite 386 plugs in her

[Log in to Reply] [No Email]

stkman_tn

05-09-2008 15:48:23

Report to Moderator

Re: Missing Farmall H Engine in reply to Janicholson, 05-09-2008 14:45:23

I did that and yes the miss followed the plugs. I'll get her out tommorrow and try again. Thanks

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

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