-
Hi Guest!
You can help ensure that British Car Forum (BCF) continues to provide a great place to engage in the British car hobby! If you find BCF a beneficial community, please consider supporting our efforts with a subscription.
There are some perks with a member upgrade!**Upgrade Now**
(PS: Subscribers don't see this gawd-aweful banner
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
TR2/3/3A TR3 fuel flow
- Thread starter tad
- Start date
Share this page
Offline
Hi, Tad, and welcome to the Forum. I'm in Clarksville; where in TN are you? Be sure and post an intro in the "New Member Introductions" forum.
Carbs newly rebuilt? Mixture is OK - not too lean? If you've got good fuel delivery to the carbs, you might check the float levels.
Mickey
Carbs newly rebuilt? Mixture is OK - not too lean? If you've got good fuel delivery to the carbs, you might check the float levels.
Mickey
I had that problem once in my TR3. It turned out to be an abostruction in the fuel line. When the car dies and stops running, lift the bonnet and open the carb bowls to see if any fuel is in there. In my case they were dry almost. It seemed that the fuel line was abstructed such that it could deliver enough fuel to run it at idle but not much more. I was on the road side stranded but I did have a pump to fill the spare tire (which I keep deflated so it goes into the cubby with ease) and I used that to blow the fuel line backwards (from the tank side of the fuel pump)and this seemed to blow the obstruction back into the fuel tank. The car ran great and got me home after that.
Offline
Good call - hope it's something that simple.
Love the Smithville area. I used to fish Center Hill Lake when I was in McMinnville. Always thought your downtown would make a good place for a Brit car show.
Mickey
Love the Smithville area. I used to fish Center Hill Lake when I was in McMinnville. Always thought your downtown would make a good place for a Brit car show.
Mickey
CinneaghTR
Jedi Warrior
Offline
/ubbthreads/images/graemlins/iagree.gif Start with the fuel filter. Performing an autopsy on the filter should give you a relatively painless idea of what is going on.
Also, be wary of the color of the gasoline. The tank to pump fuel line ended up being the culprit on my 4A. It was way more clogged than the mechanic and I thought and that was after blowing it out and running a wire through most of it! The gas in the pump bowl was not clear, it was orangish-brown, and that was from the gum/varnish in the line that would loosen up and clog the line. A new line fixed the problem.
/ubbthreads/images/graemlins/driving.gif
Also, be wary of the color of the gasoline. The tank to pump fuel line ended up being the culprit on my 4A. It was way more clogged than the mechanic and I thought and that was after blowing it out and running a wire through most of it! The gas in the pump bowl was not clear, it was orangish-brown, and that was from the gum/varnish in the line that would loosen up and clog the line. A new line fixed the problem.
/ubbthreads/images/graemlins/driving.gif
Harry_Ward
Jedi Knight
Offline
I agree the fuel filter would be my first thought. It may also be your fuel pump diaphram starting to go if you have a mechanical pump. It would be a good idea to crank the engine over with the help of another and make sure the pump is pumping out a good flow of fuel since you have the filter off anyway. Make sure the key (spark) is off and catch the gas in a clean jar or can! Look for contaminates. If these all show good then check your primary wire to the coil for poor wire crimp connectors or cracks in the wire insulation.
Banjo
Yoda
Offline
Last time I encountered the exact same problem, the TR3 I was working on had rust flakes in the gas tank.
Shine a light into the filler and you can see the bottom pretty good.
rust flakes in the tank is a common problem with 3s and 4s.
I replaced the filter, line, and had the tank cleaned out proper. My boss sent it to a shop that does that kind of thing, but I coulden't give you the name. Try a local radiator shop, they should be able to clean it out.
Prolem solved.
Shine a light into the filler and you can see the bottom pretty good.
rust flakes in the tank is a common problem with 3s and 4s.
I replaced the filter, line, and had the tank cleaned out proper. My boss sent it to a shop that does that kind of thing, but I coulden't give you the name. Try a local radiator shop, they should be able to clean it out.
Prolem solved.
MGTF1250Dave
Jedi Knight
Offline
Aloha,
Another place to check is the mesh strainer (filter?) above the glass bowl of the fuel pump. It is item # 36 on this page
https://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=29125
Before you do this, you will need to block the fuel line either with the valve (#32) if it works or clamping the fuel hose inlet to the pump. The pump is lower that the bottom of the fuel tank. loosen the nut holding the glass bowl in place, then carefully remove the bowl gasket and the screen will drop out. If it is covered with gum, varnish and or rust flakes you'll need to get you lines and tank cleaned out.
Another place to check is the mesh strainer (filter?) above the glass bowl of the fuel pump. It is item # 36 on this page
https://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=29125
Before you do this, you will need to block the fuel line either with the valve (#32) if it works or clamping the fuel hose inlet to the pump. The pump is lower that the bottom of the fuel tank. loosen the nut holding the glass bowl in place, then carefully remove the bowl gasket and the screen will drop out. If it is covered with gum, varnish and or rust flakes you'll need to get you lines and tank cleaned out.