I have had a blocked fuel filter that was starving the engine at any kind of load, and it would fuel dribble through at low speed, but as soon as you tried to force fuel through it it would gum up. Also have you completely ruled out that your fuel pump doesnt have something wrong with it?
On Wed, 15 Oct 2003, Jeff Oldham wrote: > GUYS, > > I am sure that when i changed the fuel filter it had plenty of natural > pressure > (hydrostatic head pressure I guess) > but thought I would check what people thought as cleaning the tank might be > a pain ! > > > thanks again Jeff. > > > Jeff, > > Yep I was just going to say what Kris said :) > > Andrew > > > Jeff, > > Has it always had this problem? Ideally electric pumps should be > as > > close to the tank outlet as possible as they are designed to pump better > > than suck. > > 99.9% of car manufactures install them in the tank or just below it (head > > pressure from tank). > > The distance from the tank to the engine bay is probably to far for the > pump > > to draw from when high revs are used causing starvation. > > I would relocate the pump to the back of the car. > > > > > > Kris. > > ----- Original Message ----- > > From: "Jeff Oldham" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Wednesday, October 15, 2003 11:35 AM > > Subject: RE: gravity feed fuel lines > > > > > > > Andrew > > > > > > the one in the engine bay which is right above the drivers wheel arch > > > not sure if there is one near the tank - will check it out as the fuel > > lines > > > are not original. > > > the one in the engine bay is before my electric fuel pump, not near the > > > carbs > > > so when i take the filter off it should be a clear line straight to the > > tank > > > hence i expected to have gushing petrol ! > > > > > > thanks again Jeff > > > > > > > > > Jeff, > > > > > > Just to confirm a few things, are you talking your fuel filter in a > > position > > > under the tank/before the lines to the front of the car, or in the > engine > > > bay/just before the carbs? > > > > > > Because if you check the flow at both these positions, you can better > > > isolate the area where a blockage may be ie in the tank, or in the > lines, > > > and so maybe not remove the tank unnecessarily. > > > > > > Remove the fuel hose from the metal line in the RHF wheel well as fuel > > > should definitely flow from gravity at that point if there arent > > > restrictions. > > > > > > Andrew > > > > > > > Andrew - ok i tried that so i guess it rules that out > > > > > > > > the car wouldnt run without stalling at high revs, so i took fuel > filter > > > off > > > > & blew back down the lines untill i could hear bubbles. the car goes > ok > > > not > > > > but the fuel doesnt run down the lines like i think it should > > > > > > > > so i guess out comes the tank > > > > > > > > anybody know of any problems with removing the tank > > > > anybody cleaned one out before ? > > > > > > > > > > > > thanks jeff > > > > > > > > > > > > > > > > Hi Jeff, > > > > > > > > Yep, undoing the cap would eliminate the breathers from the equation > > > > if they were blocked. > > > > > > > > Andrew > > > > > > > > > Andrew > > > > > > > > > > to check the tank breathers if i undid the fuel cap then the fuel > > would > > > > flow > > > > > ? > > > > > > > > > > ta Jeff > > > > > > > > > > > > > > > Jeff, > > > > > > > > > > Fuel will gravity feed even if the car is on a flat surface etc, if > > your > > > > > outlet is at a height lower than the fuel level in your tank. So if > > you > > > > pull > > > > > the fuel filter and move the flexible fuel line down to less than > the > > > tank > > > > > height (which you can guesstimate), if nothing comes out theres some > > > > > restriction. Another scenario is that the tank breathers are > blocked, > > > > > which would also not allow fuel to flow by gravity. > > > > > > > > > > Andrew > > > > > > > > > > > I think i have something blocking my fuel flow > > > > > > are there any issues associated with removing the fuel tank to > clean > > > it > > > > ? > > > > > > > > > > > > I thought that the weight of the fuel would push it out down the > > > lines, > > > > > like > > > > > > in a water tank ? > > > > > > > > > > > > ta jeff > > > > > > > > > > > > > > > > > > It depends, if there is any pressure in the tank and/or if the > car > > > is > > > > > > facing down hill/jacked up at rear, fuel can flow out. > > > > > > > > > > > > > > > > > > Kris. > > > > > > ----- Original Message ----- > > > > > > From: Jeff Oldham > > > > > > To: [EMAIL PROTECTED] > > > > > > Sent: Tuesday, October 14, 2003 8:13 AM > > > > > > Subject: gravity feed fuel lines > > > > > > > > > > > > > > > > > > Hey List, > > > > > > > > > > > > when you remove you fuel filter should the fuel gravity feed > out > > > of > > > > > the > > > > > > line ? > > > > > > > > > > > > thanks Jeff > > > > > > > > > > > > > > > --membersozdat------------------------------------------------------- > > > > > > OZDAT Mailing List Please Note:- > > > > > > Send (un)subscribe requests to [EMAIL PROTECTED] > > > > > > Send submissions to [EMAIL PROTECTED] > > > > > > No unauthorised redistribution of this email > > > > > > http://www.ozdat.com/ozdatonline/index.htm > > > > > > http://www.ozdat.com/ozdatonline/listindex.html > > > > > > http://www.mail-archive.com/[EMAIL PROTECTED]/ > > > > > > > > > --------------------------------------------------------------------- > > > > > > > > > > > > > > --membersozdat------------------------------------------------------- > > > > > > OZDAT Mailing List Please Note:- > > > > > > Send (un)subscribe requests to [EMAIL PROTECTED] > > > > > > Send submissions to [EMAIL PROTECTED] > > > > > > No unauthorised redistribution of this email > > > > > > http://www.ozdat.com/ozdatonline/index.htm > > > > > > http://www.ozdat.com/ozdatonline/listindex.html > > > > > > http://www.mail-archive.com/[EMAIL PROTECTED]/ > > > > > > > > --------------------------------------------------------------------- > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------
