FUEL ISSUE?
Thread Starter
|
New User
Joined: May 2013
Posts: 2
Likes: 0
FUEL ISSUE?
all right fella's,i read and reread the stickies on glow plugs,checked them ,changed them,no luck.Truck would only crank with ether(yeah,i know).
Moved on thinking it might be sucking air so after investigation i found that the metal fuel line was crushed allmost flat where it turns and goes up around the oil pan.Temporarily "fixed" it by replacing the metal line with another line that was sitting around the shop.Now she's dead in the water,tried shooting air in the fuel tank to force the fuel,but only managed to get fuel as far as the lift pump,can;t get fuel to the filter.Question is,shouldn't i be able to at least hear air coming out the filter housing when the filter is unscrewed and while shooting air into the fuel tank?Thanks!
Moved on thinking it might be sucking air so after investigation i found that the metal fuel line was crushed allmost flat where it turns and goes up around the oil pan.Temporarily "fixed" it by replacing the metal line with another line that was sitting around the shop.Now she's dead in the water,tried shooting air in the fuel tank to force the fuel,but only managed to get fuel as far as the lift pump,can;t get fuel to the filter.Question is,shouldn't i be able to at least hear air coming out the filter housing when the filter is unscrewed and while shooting air into the fuel tank?Thanks!
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
Pull the input and output hoses off the lift pump. If you crank the engine, you should see some suction at the input side. If you don't, it's shot. Note that lift pumps are cheap, so... not that big a deal if it is.
It also *could* be clogged.
Now, when you push air into the tank, you get fuel out of the input line to the pump, but when it's connected, no further? Sounds like the pump is shot/clogged perhaps?
With my (good) pump, I can suck fuel through it with a squeeze-bulb, so it should work as a pass-through when you've got pressure on the input line... I think.
It also *could* be clogged.
Now, when you push air into the tank, you get fuel out of the input line to the pump, but when it's connected, no further? Sounds like the pump is shot/clogged perhaps?
With my (good) pump, I can suck fuel through it with a squeeze-bulb, so it should work as a pass-through when you've got pressure on the input line... I think.
Thread
Thread Starter
Forum
Replies
Last Post
gprust
1967 - 1972 F-100 & Larger F-Series Trucks
5
May 8, 2017 03:10 AM
rupejosh
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
62
Nov 12, 2008 06:02 PM
