gas problems
Thread Starter
|
Tuned
Joined: Feb 2016
Posts: 281
Likes: 16
gas problems
So I recently fixed the exhaust on my truck so I could actually drive it without choking myself out from the leaks. LOL....so I figured I would drive it down and get some gas to find out if the gas gauge actually worked, which was a NO
I was assuming that was maybe a simple fuse issue(not sure if gas gauge is fuse driven on 1978 F100?)....however ever since adding that extra fuel to the truck, and redoing the exhaust, now there is a very strong odor of gas in the garage....I have looked and do not see any evidence of gas leaking anywhere, even under the tank, filler neck....could the gauge not working and the stronger odor since adding fuel be related?
I was assuming that was maybe a simple fuse issue(not sure if gas gauge is fuse driven on 1978 F100?)....however ever since adding that extra fuel to the truck, and redoing the exhaust, now there is a very strong odor of gas in the garage....I have looked and do not see any evidence of gas leaking anywhere, even under the tank, filler neck....could the gauge not working and the stronger odor since adding fuel be related?
Postmaster
Joined: Nov 2011
Posts: 2,553
Likes: 10
The gauge is all electrical. Adding gas should make it go up but no relationship to gas fumes. No relationship to exhaust either unless a line got bumped in the process of fixing exhaust.
As a guess, you may have some old hard and semi-porous rubber gas lines. Simply running the truck filled them up and they seep a little after parking giving you the gas fumes. Also, gas in the carb of a warm engine may boil out after shutdown causing the fumes. My truck does that.
Suggest you go over and replace all rubber fuel lines and carefully inspect the steel lines... then move on to figuring out the fuel gauge.
The quick test for the electrical side of the fuel gauge is to remove the sender wire at the tank and briefly ground it. A helper can watch the gauge... it should jump to full. Best to do this after you are sure there is no gas around.
As a guess, you may have some old hard and semi-porous rubber gas lines. Simply running the truck filled them up and they seep a little after parking giving you the gas fumes. Also, gas in the carb of a warm engine may boil out after shutdown causing the fumes. My truck does that.
Suggest you go over and replace all rubber fuel lines and carefully inspect the steel lines... then move on to figuring out the fuel gauge.
The quick test for the electrical side of the fuel gauge is to remove the sender wire at the tank and briefly ground it. A helper can watch the gauge... it should jump to full. Best to do this after you are sure there is no gas around.
Laughing Gas
Joined: Dec 2003
Posts: 900
Likes: 3
In addition to what Blue and White said about replacing the gas hoses, make sure to get the "barrier" type of fuel hose, usually recognizable by green lettering on the outside. It's supposed to be more resistant to modern ethanol fuels.
Thread Starter
|
Tuned
Joined: Feb 2016
Posts: 281
Likes: 16
Thanks for the replies.
I will have to crawl under the truck and see what shape those rubber lines are in...that is likely the culprit although i would have thought all the seepage wold have evaporated by now more than a week later.
I will have to crawl under the truck and see what shape those rubber lines are in...that is likely the culprit although i would have thought all the seepage wold have evaporated by now more than a week later.
Thread
Thread Starter
Forum
Replies
Last Post
f250custom78
1973 - 1979 F-100 & Larger F-Series Trucks
16
Sep 29, 2012 12:23 PM
