I thought my bis was having an overheating issue as it would run fine for about 30 minutes short drive. Turn the engine off and then started within 10 minutes, it start ok and would lose power within a minute. Then it would crank ok but refuse to start. After the car would sit overnight it would then start and drive with the same issue.
So yesterday I decided to remove the thermostat, refill coolant, and bleed the system. It ran ok for 10 minutes then turned off to do a few adjustments. Then started on a short test drive. A minute later it lost power and would not start only crank. Immediately after I removed the fuel line from the carb and noticed the fuel was not being pumped at all. Also checked the output directly from the pump and no fuel coming out. I removed the fuel pump and noticed there were about 5 or 6 gaskets under the pump. Unsure if this is normal? I am thinking possibly the multiple gaskets were stopping the pump push rod rod from pushing the pump properly? Also measured the push rod and was about 18.7cm length. Not sure if too long or too short?
When everything was put back together (removed a few of the gaskets from the pump and left about 3 on) and then the pump then worked fine and the car started right up and seemed normal. I am sure the same faulty would happen again but did not drive since. Not sure exactly what the fault is? Would like to try and keep using a mechanical pump if possible. Any advice would be greatly appreciated. Thank you.
