Vapour lock

Hi Phil,

You can keep your mechanical fuel pump and the lines as they are and fit a Facet under the fuel tank. Depending on your choice, the Facet can be wired to run whenever you start your engine, or it can be switched on when vapour lock occurs. The Facet does not impede flow when switched off.
I have had this arrangement on my Rover for almost 30 years, never had an issue in not using a regulator, the fuel pressure that the solid state Facet delivers does not warrant one.

Ron.
 
Move the reserve tap itself to the back, adjacent to the tank and pump. You'll need a longer cable.
 
Do folks these days actually run a car on the main tank until it coughs and splutters then pull the reserve ? I thought the fuel gauge was there to tell you to put fuel in ?
I cant imagine what would happen to your heart rate if you went on reserve half way past an HGV on an A road !
 
I thought pulling the reserve tap half way past an HGV on an A road was the reminder to put more fuel in!
 
Life on the edge..... I must up the cardiac treatment and try it.
I can see a whole new forum section - Have you gone on reserve today ?
 
Do folks these days actually run a car on the main tank until it coughs and splutters then pull the reserve ? I thought the fuel gauge was there to tell you to put fuel in ?
I cant imagine what would happen to your heart rate if you went on reserve half way past an HGV on an A road !

When i was using mine day in - day out, most of the times i was refuelling well before the need to use the reserve. Of course i had been experimenting a little to find out that as soon as the fuel gauge went clearly past the last quarter line, it was time for the reserve. However, sometimes when i needed that extra mileage to arrive to the preferred petrol station, i did not hesitate to use the reserved fuel, normally well before the car started to splutter!
You see with this system you have many options, and its up to you how to use them.
Something else that i have learned through the "experimental" phases, was that seconds before the engine started to miss, a smell of petrol appeared, that normally wasn't there before. There must be an explanation for this, but the phenomenon was clearly consistent.
 
I have plumbed mine to use the fuel from the reserve all of the time by swapping the pipes over at the sender unit. The reason being the reserve is the only pipe in the tank that has a filter on it, the main tank has just an open pipe.
I did not want debris to reach the electric pump, and I did not want the reserve knob sticking out of the dashboard all the time so changed the pipes over.
Not since the '70 s on motorbikes have I had a petrol reserve and I have never run a car dry.
One day I will rip all the lines out and run a single new line in a bigger bore, one day...............
 
One day I will rip all the lines out and run a single new line in a bigger bore, one day...............

Mine's a 12mm feed to the high pressure pump, then 8mm copper to the fuel rail. I cut the reserve pipe off short, but have no idea why I did it?

IMG_0127a.jpg
 
Dare I suggest that the pipe you cut short was the main tank feed, the lower pipe with the filter on it is the reserve.
I like your big bore connector.
 
Hi Phil,

You can keep your mechanical fuel pump and the lines as they are and fit a Facet under the fuel tank. Depending on your choice, the Facet can be wired to run whenever you start your engine, or it can be switched on when vapour lock occurs. The Facet does not impede flow when switched off.
I have had this arrangement on my Rover for almost 30 years, never had an issue in not using a regulator, the fuel pressure that the solid state Facet delivers does not warrant one.

Ron.

This would seem to be the easiest solution; probably to have it switched so that I can use it when stuck in traffic or in particularly hot weather. Even if the car spluttered to a halt on its mechanical pump, I then have a dependable back up.

Plumbing it into the main feed would mean I still have a reserve as well :cool:
 
I suggest you put the electric pump on the reserve line as the mechanical pump gives one pump per two engine revolutions. In my experience that amounts to the battery going flat before enough fuel comes along to fill the carbs enough for the engine to fire...you wind up out of fuel with a flat battery....

You can fit the same type of switch which is on the choke cable (for the choke warning light) to the reserve cable to turn the pump on when you pull the reserve out.
 
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