This morning as I was leaving home the Mini cut out. It then briefly started up again before cutting out again.
Some backstory, a couple of months ago I fitted a set of rebuilt twin HS2 carbs to replace the existing single HS4 carb. Soon after I was having some issues with the car misfiring and cutting out. After some investigation, it turned out the distributor cap was worn and I figured this was the source of that fault. I replaced the plugs, leads, cap and rotor and the problem seemed to be gone.
Fast forward to this morning, after the car cut out, I chatted to my friend who knows Minis better than me and we started ticking things off that might be the problem. Forst I just turned the key to check if the issue was a low charge or flat battery. It was swinging fine, suggesting the battery was fine. Next, I checked the plugs to see if I'd flooded the motor and they seemed fine. They weren't soaked in fuel and the plug colour was good too. I then checked the cap and rotor to see if one of them was broken and thus the plugs were not getting current. They were fine too. Next, I checked the float bowls and these were empty suggesting the engine was being starved for fuel. Figuring the issue must be an old filter at the back, I checked under the rear subframe, and surprisingly, there was no filter which is obviously terrible.
The car has a mechanical fuel pump, and I was wondering if that could have failed because I've been using the car without a filter? I'd need to source a replacement and I might be able to get one (condition unknown) from the same friend I was chatting to on the phone. I was wondering if there are any other things I could check before jumping at replacing the pump?