Antique Engines and Old Iron
[Home] - [HELP] - [Forums] - [Groups] - [Classified Ads] - [Subscribe] - [Books] - [Sponsors] -

Go Back   SmokStak > SmokStak® Antique Engine Community > Hit & Miss Gas Engine Discussion
Forgot Password? Join Us!


Hit & Miss Gas Engine Discussion Meet collectors of hit and miss engines, ask questions about collecting, restoring and showing antique flywheel engines.

Hit & Miss Gas Engine Discussion

gas tank mounting

this thread has 2 replies and has been viewed 1237 times

Thread Tools Display Modes
Old 10-11-2009, 10:21:20 AM
Posts: n/a
Default gas tank mounting

Hello My brother and I went to a show in paducah and had a gentle man tell us our fuel tank was mounted to low
it was on his 1 3/4 associated. I'm having trouble with my 8 hp witte also could this be part of my trouble?
Thanks Lowboy
Reply With Quote
Sponsored Links
Old 10-11-2009, 12:03:05 PM
Posts: n/a
Default Re: gas tank mounting

Not fimiliar with associated or Witte but reguardless of having the tank below the engine, you should have a check ball valve or valves near the tank. This is what keep's gas at a "constant" in the fuel lines. without those, all fuel in the lines are lost and the engine never runs due to fuel draining back to the tank. Check valves prevent this to keep the engine running. There is also a such thing as STUCK check valves preventing the engine from getting fuel. In that case, the check balls need taken out and fittings cleaned, then re-assyembly.

Just incase you arn't fimilar, you cannot fix this problem by having the tank above the engine if you dont have any check valves. This would turn into a straight drain and all fuel would go out of the mixer like a water fall due to the mixers on a stationary, as a rule, are floatless and needle-les. you only have one, two, or three needles and those would be simple fuel metering needle's.

Now if your getting gas and you have check balls and all that other good stuff then tank mounting position may not be your problem.
Reply With Quote
The Following User Says Thank You to For This Post:
Old 10-11-2009, 12:33:02 PM
smgussey smgussey is offline
Join Date: Mar 2008
Location: Fort Mohave, AZ, USA
Posts: 660
Thanks: 1,089
Thanked 352 Times in 175 Posts
Smile Re: gas tank mounting

I would have to say that, yes, tank mounting location can play a part in how an engine runs (or doesn't run!).

There is only so much vacuum available to pull fuel - and if it's pulling from too much height, it just won't suck the fuel up. Most engines I've seen with original tanks have a suction height of 4 to 8 inches. I know when I was attempting to run my IH LB on a gas can with a hose and check valve it would run much better if I held the can up to about the original height of the fuel tank - when I set the can on the ground (about a foot below the mixer) it would sputter and cough and run terribly.

Another thing I've noticed on many throttle-governed engines is that they run much, much better under load. Simply idling along causes them to misfire quite often unless you keep them partially choked --- again, a factor of how much vacuum is being pulled... with the throttle valve closed there isn't much vacuum at all.

In conclusion, to answer your question, yes.
Reply With Quote
The Following 2 Users Say Thank You to smgussey For This Post:


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

F o r u m Jump

Similar Threads Chosen at Random
Thread Thread Starter F o r u m Replies Last Post
Mounting on a Trailer lowboy Hit & Miss Gas Engine Discussion 7 10-05-2009 02:44:20 PM
2 HP hercules gas tank mounting question John Drabik Hit & Miss Gas Engine Discussion 9 07-16-2008 01:05:06 AM
Mounting a 72 twin John Cunningham Maytag Engines and Collectibles 8 05-28-2008 12:13:49 AM
What did Original FM Fuel Tanks look like? Correct Mounting of NEW Tank? DerekC Hit & Miss Gas Engine Discussion 12 11-14-2007 07:58:28 PM
Need help with IHC Famous Tank Mounting Peter Hit & Miss Gas Engine Discussion 5 07-25-2005 02:01:09 PM

Use "Ctrl" mouse wheel to change screen size.
All times are GMT -4. The time now is 05:17:12 PM.

Smokstak and Enginads site search!

All use is subject to our TERMS OF SERVICE
SMOKSTAK® is a Registered Trade Mark - A Community of Antique Engine Enthusiasts
Copyright © 2000 - 2019 by Harry Matthews P.O. Box 5612 - Sarasota, FL 34277