Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts
Salvage

Community
Discussion Forums
Project Journals
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Kountry Life
  
Farmall & IHC Tractors Discussion Forum
:

farmall 350u no power - valves?

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

11-14-2016 15:01:58




Report to Moderator

new post related to old post "Farmall 350 valve noise??"

wondering what to check to confirm suspicion that i need a valve job (before i tear my tractor apart.)

after a little more use (since a noise started that I guess comes from valves) tractor can not even make it up a medium grade hill on it's own.
when sitting fairly level, just raising bucket up and down causes it to almost die.

it will rev up to pretty normal RPM, just seems to lack power.
also seems like more flames than usual come out exhaust.

[Log in to Reply]   [No Email]
JeffL

11-27-2016 13:12:30




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
The engine just blew a giant hole in the side just under the cover with the small hole in it. I see a rod broken in the hole. Strange that it had OK oil pressure and temperature and I was only moving it at fairly low RPM. I guess I'll start a new post about engine swap.



[Log in to Reply]  [No Email]
300 dave

11-20-2016 12:42:21




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
If you push the handle hard against your skull just in front of your ear it works well. Do not put the point on any moving parts. Don't ask me how I know this is a bad idea. HF sell a stethoscope and they seem to work.



[Log in to Reply]  [No Email]
JeffL

11-20-2016 08:30:50




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
once I locate which valve is making the noise then what do i do to fix it?

also the hole I mentioned in the engine block side cover - i am afraid it might be made from a broken part on the inside
am i basically looking at a pretty major tear-down?



[Log in to Reply]  [No Email]
tom dowling

11-20-2016 12:42:47




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-20-2016 08:30:50  
The leaking cover is rusted thru, new are available or maybe it can be patched. There's nothing to break under the cover on the carb side of the tractor. As for the valves, once you've isolated the noise check the rocker where it contacts the valve stem, you may have a ridge worn in the rocker giving you a false read on your feeler gauge. Do you have good oil flow when it's running with cover off? Rocker or the shaft may have worn groove also.

[Log in to Reply]  [No Email]
JeffL

11-20-2016 07:37:10




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
Took out plugs and turned engine normal until middle timing mark lined up and #1 valve was moving. Put my depth gauge on valve spring and moved engine backwards until valve moved a couple thousandths according to depth gauge and the pointer was hardly moved. Did it a couple times. Also watched with eyes on several other valves moving engine forward and back and can't seem to see or feel much play.

Ran it with valve cover off and plugs out and no fuel with the starter a bunch and nothing notable in noise or movement that seemed odd.

Got it to run good enough to make it up the incline. If I advance the ignition timing the noise gets worse but engine power gets better. If I retard the ignition timing the noise all but disappears but power is awful.

While doing all this the engine side cover on the manifold side started to squirt out antifreeze. I think it is a hole in the cover itself.
here is a link to a video:

https://youtu.be/Idf0vfYrHxs

[Log in to Reply]  [No Email]
tom dowling

11-20-2016 08:04:21




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-20-2016 07:37:10  
I watched and heard the video, it's valves tapping that I heard. Here's an old trick to pinpoint which one... get a large screw driver, the longer the better, touch it to the rockers one at a time when idling while holding your ear to the handle. You'll hear a lot of noise and can track the loud tap to the source.



[Log in to Reply]  [No Email]
tom dowling

11-20-2016 08:11:09




Report to Moderator
 Re: farmall 350u no power - valves? in reply to tom dowling, 11-20-2016 08:04:21  
You can also put the screwdriver on the block to listen for other stuff.



[Log in to Reply]  [No Email]
JeffL

11-19-2016 15:49:52




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
Here is a video. For the record it wasn't me who painted it yellow :)



[Log in to Reply]  [No Email]
JeffL

11-19-2016 15:43:51




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
Lots of feedback.
Took out plugs and turned engine normal until middle timing mark lined up and #1 valve was moving. Put my depth gauge on valve spring and moved engine backwards until valve moved a couple thousandths according to depth gauge and the pointer was hardly moved. Did it a couple times. Also watched with eyes on several other valves moving engine forward and back and can't seem to see or feel much play.

Ran it with valve cover off and plugs out and no fuel with the starter a bunch and nothing notable in noise or movement that seemed odd.

Got it to run good enough to make it up the incline. If I retard the ignition timing the noise gets worse but engine power gets better. If I retard the ignition timing the noise all but disappears but power is awful.
While doing all this the engine side cover on the manifold side started to squirt out antifreeze. I think it is a hole in the cover itself.

I will try to post a video shortly.

[Log in to Reply]  [No Email]
brownie450

11-17-2016 03:40:43




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
If the valve train appears to be in good shape, upper engine noise would
possibly be piston slap or connecting rod getting loose at the piston.

Compression test would give an idea of what might be going on.
Jim



[Log in to Reply]  [No Email]
David G

11-16-2016 15:29:28




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
Have you checked the ignition timing?



[Log in to Reply]  [No Email]
300 dave

11-16-2016 09:24:33




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
my 350u had similar symptoms, had to change plugs every day or sooner. it was on a backhoe so I could live with it. Winter I pulled it to find timing gear and key badly wallowed out as janicolson has stated good luck



[Log in to Reply]  [No Email]
JeffL

11-15-2016 08:14:01




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
I had tried pulling one plug at a time while it was running. I didn't notice change in the noise much. I did notice that I got zapped just touching one of the wires. Is that something I should be concerned about?
The wires are reasonably new but are Tisco kinda cheap.
I worked a bunch with it running with the valve cover off and none of the valves seemed to feel much different than any other with my finger on top.

[Log in to Reply]  [No Email]
Janicholson

11-15-2016 09:02:45




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-15-2016 08:14:01  
Sudden onset power loss with knocking like noise is usually not spark or fuel. Another idea on the cam drive hub failure is to turn it slowly and look for the valve train to make sudden snapping moves either forward or backward as it is turned by hand (plugs out with the fan belt!) Jim



[Log in to Reply]  [No Email]
brownie450

11-15-2016 05:49:31




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
Might try pulling 1 plug wire at a time out of the
dist. cap & see if that has any effect on the noise.

Believe I'd pull the valve cover & see what's going
on in there. You could have push rod/ rocker arm
trouble. You'll be able to get an idea if it's maybe
a valve thing.
Jim



[Log in to Reply]  [No Email]
JeffL

11-15-2016 05:10:12




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
when the problem initially began the tractor had been running very well for around four hours of pretty hard work then fairly sudden loss of power plus upper engine noise.

I did check the ignition timing, point gap and plugs several times.

will check for loose cam gear and try compression test in the next couple days.

it sounds even stranger now when it runs, i'll try to post a recording or something.
i don't know how to check for manifold leak

[Log in to Reply]  [No Email]
brownie450

11-15-2016 02:39:14




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
Easiest things first.

Check points/ condenser---gap points at .020---check timing
Check spark plugs
As Charlie said-compression test to see how tight valves/ rings are
Check valve lash--adjust when hot. Get correct gap figure. Usually .017 hot
Check for air leaking at intake manifold---gaskets
Jim



[Log in to Reply]  [No Email]
Janicholson

11-14-2016 17:32:36




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
A cam gear with a loose or wallowed out Key can make those symptoms. The Utility is a frameless design. This means that you need to check cam timing next to assure that the diagnosis is correct. I would do this by rotating the engine clockwise with the hand crank, or jacking one rear wheel an with it in 5th gear and TA forward, push on the top of the lifted wheel forward until the #1 cylinder is a little past the point where that valve is closing. Now mark the pulley at the timing mark. and carefully move the engine backwards and watch that intake valve (or measure its height before turning backwards, and keep measuring as you turn backwards). There should be less than 1/16" movement of the pully in relation to your mark before the valve starts moving. What you are looking for is slack in the drive of the cam. If it has noticeable slack, the cam drive gear is loose on the cam. It means removing the front bolster and pulling the front cover to fix it. Jim

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

11-14-2016 16:33:14




Report to Moderator
 Re: farmall 350u no power - valves? in reply to JeffL, 11-14-2016 15:01:58  
A compression test will tell you if the valves are bad. Have you checked to see if they have the right clearance. Pull the valve cover and see if everything is working correctly. Points that are going bad make my tractors loose power or not start at all.Has the tractor been running OK or is this sudden. Does it sound OK when not under load.Maybe something in carb not letting it get extra gas under load. Valv e jobs aren't cheap so if it were my tractor I would check out a lot of free stuff before spending money on valves.

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

Hop to:


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


Today's Featured Article - Product Review - by Staff. When we finally checked out the 3000 PSI North Star, the whole story chaned. This unit was equipped with an 11 HP Honda engine with fuel shutoff, adjustable flow and optional syphon degreaser dispenser. It didn't have a pressure release or electric start to facilitate easy starting but according to the instructions, simply pulling on the trigger while cranking was sufficient. This method of starting proved more than adequate and kept the cost down on the unit. It had all the important ... [Read Article]

Latest Ad: 1967 Ford 3000 [More Ads]

Copyright © 1997-2021 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