TO 20 boiling gas
New User
I have a TO 20 that I got from my wife s grandfather. When I run it the gas get so hot that it boils inside the tank. Can someone tell me whats going on and how to fix it?
- Thread starter TO 20 boiling gas
- Start date
roaddevil49
Member
Could put a heat shield between the engine and tank,make sure cap is venting properly.
Allan in NE
Well-known Member
Totally normal.
Allan
Allan
Ethanol boils at 173°F. Some of the hydrocarbon
components of gasoline begin to boil as low as 80°F. Back
to the OP, I would suspect he still has winter blend fuel in
the tank, which is blended to vaporize at a much lower
temperature, hence the boiling as the weather warms. He
may also be using an inline fuel filter, which can mimic
vapor lock.
components of gasoline begin to boil as low as 80°F. Back
to the OP, I would suspect he still has winter blend fuel in
the tank, which is blended to vaporize at a much lower
temperature, hence the boiling as the weather warms. He
may also be using an inline fuel filter, which can mimic
vapor lock.
Ivan in Mich
Member
It boils because the tank sits a few inches above the exhaust manifold and the type of gas does not matter. I have seen some with a heat shield between the tank and the manifold but I don't know if this helps. The first time mine did that I about craped my pants
Janicholson
Well-known Member
Were it mine I would put a two layer metal baffle between the tank and the manifold. boiling gasoline is nasty as it can gush out of the filler makein very nasty fire potential. Block the front of the baffle as well to keep radiator heat off of the tank. An electric fan sized to blow air into the space from the opposite side of the engine might also help. Jim
Heat shield is a good thing! The winter gas is a big PITA!!! I filled the engine up on my lawn tractor cause the gas cap did not have a vent hole and the tank pressurized. Over a gallon of gas in the engine! The cap on your 20 should be vented. That is why international Harvester still gives out those free feul caps. Make sure that little hole is clear! Another thought. The insulation used in commercial heat ducts is great stuff. Very compact and very high R factor. It is black with a soft side and a pretty hard side on the other. I have used it to sound proof the doors in several vehicles and you can just glue it in. Also used it on a big generator with a quiet run muffler under a plastic gas tank. Worked grat!
James Williams
Well-known Member
My TO30 did the same exact thing,I cleaned the out side of the rad.It helped some,I ran it for years and could figure the problem,just thought it was because the tank was over the motor.Replaced the fan belt and tightened and problem solved
jimmy
jimmy
Lamar Fudd
Member
Sorry Dean and Showcrop--your BOTH wrong. My Taurus, a flex fuel model, needs a block warmer (factory install) to get her started when an E-85 is used. She (can you tell I love her?) has over 250,000 miles and STILL runs as if she were new. I'd like to see a gook-mobile do that! My Wife, who I also love, doesn't want a newer car as she knows our Taurus won't ever make either of us walk.
Are you sure it's boiling, and not sucking air back through the line because the tank is vapor locked?
If you're sure it's boiling, the obvious thing to do is find and eliminate the source of the heat. Should be easy to find because it's HOT and near the gas tank.
Gasoline doesn't generate its own heat.
If you're sure it's boiling, the obvious thing to do is find and eliminate the source of the heat. Should be easy to find because it's HOT and near the gas tank.
Gasoline doesn't generate its own heat.
Back when those tractors were new they offered a heat shield as an accessory. The original manifolds are worse to heat the fuel tank because the exhaust comes out and runs over top of the intake runners which puts the hottest part of the manifold closer to the tank. The TO-35 style manifold moved the intake runners to the top of the manifold and the exhaust came straight out which put more distance between the tank and the exhaust. They also offered a heat shield on the TO-35 and the TO-35 manifold and the TO-20 manifold are interchangeable. You can try to find an original heat shield and put it on yours or try switching manifolds and see if that doesn't help. If you want I can post a pic of the two style manifolds side by side so you can see the difference. Here is a pic of the heat shield from the parts book. Part # 181144M93.
Similar threads
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