(800) 853-2651
SHOP NOW

Old gas strikes again

3

37chief

Well-known Member
Location
California
About 4 years ago I put some old gas in one of my tractors. In a few hours I had a bad case of sticking valves. It was so bad I had to remove the valvce cover to free them. I am in the process of getting my old TO 20 running so I can sell it. the tank was empty after sitting for quite a few years I thought no problem I will just add some new gas. I guess the new gas loosened the crud in the tank, and two of the valves were sticking. I had to remove the valve cover to free the valves. While the tank was off I drained the gas. So what can I add to the gas to help the valves from sticking again? Stan
 
a good chainaw 2 cycle oil with a sabilizer such as Stihl oil at about 150:1 or 200:1 ratio, leaves a film on the valve stems and keeps them from sticking, but not so much it fouls plugs. I have one with new guides that are a bit tight and will stick when hot , but work fine if I do this.
 
Two that I use are:

Two cycle engine oil - it does not smoke at even 50:1 mix.

Automatic Transmission Fluid - very high in detergents.

Is enough oil getting to the valve stems?
 
You need to add 50/50 acetone/atf into the tank to dissolve that varnish in there. About a gallon. then shake it around few minutes, then let it sit on the bottom for and hour. Then shake again like crazy and sit on side and hour. Then last the other side. Then drain.
Then do the same with 2 qts lacquer thinner. Then last with 1 gallon of gas.
 
Once I get the valves free I add new gas with Marvel Mystery oil. I use MMO while loosening the valves too.
 
ATF from what Buickdeere say is low detergent but I have heard both ways. Either way ATF works well to free up most any thing that does not want to move easy
 
Check out Home Depot. They have a variety of chemicals in quart thru gallon containers in the paint dept.

Mark
 
Be careful with your hands and painted surfaces. Acetone is a powerful solvent and can lift mature paint and remove all the oil out of your hands causing skin cracking.

If you get it on you, wash good with S&W and apply a good hand cream/lotion.

Mark
 
You must log in or register to reply here.

Similar threads

Geo-TH,In
Snake OIl?
2
Replies
30
Views
872
r.w.b.
R
B
Old Diesel vs Old Gas
Replies
13
Views
498
Michael V (NM)
M
T
How to measure gas in tank?
2 3
Replies
53
Views
2K
Crazy Horse
Crazy Horse
formerly ny bill
1929 Regular lives!
Replies
11
Views
639
Absent Minded Farmer
Absent Minded Farmer
UncleTom
Old gas tank with varnish and fuel and E-85
Replies
12
Views
1K
UncleTom
UncleTom
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.

Copyright © 1997-2024 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

Back
Top