2 replies to this topic

[Madrugada]

Hi there, I have recently joined the forum & have been working on a Mini that I bought last month with 47 years of other people´s bodges, let us see if mine are any better  . This car is a 1973 850cc (MK3, I believe), it was seriously lacking in power on the hills, I didn't expect Cooper performance, but 1st gear on a 1 in 10? I decided to fit a new mechanical fuel pump, no problem in itself & it worked, that along with the fact that the vacuum advance/retard was goosed. Performance enhanced beautifully. Here is the question, do I have to drain some fuel out of the tank every time I work on the fuel system? When I removed the pipe on the inlet side of the fuel pump, petrol poured out & I could not find anyway of stopping it apart from draining some fuel out of the tank. I have had Minis before & cannot remember this happening, mind you, in those days I couldn't afford to fill the tank (hee, hee). I know that when the tank is full the fuel level is higher than the fuel pump, should there be anything in the line that stops it syphoning? I look forward to the benefit of your experience. Cheers, John

[GraemeC]

Either block the end of the pipe you removed with a bolt, or if there is a convenient piece of rubber hose in the line (maybe where it goes through the boot floor) use a pipe clamp.

[cal844]

I use a bolt in the end and a jubilee clip around the bolt. Or use a pipe clamp (I have improvised by using long nose wise grips but only if I will be changing the piece of hose.

Hope this helps

Cal