Cheers matey,
I've just come in from the garage and after an inspection of the fuel system i noticed a few things.
1) It is set-up with a return feed to both fuel tanks, in-line from the feed to carb 2. odd and unnecessary as i'm running carbs but easily changed to be how i want it.
2) There is no breather on tank 2. This would explain why only tank 1 is filling and then the level drops quickly when running, as there is no breather on tank 2 for the fuel to self-level and then it levels out from the fuel return when the pump is running.
Again this can be easily fixed and i'll sort this out when i also sort out the carb feed.
3) The fuel from the tanks goes to the fuel pump first, then the filter, before going to the carbs. Easy to sort by swapping two pipes around so that the filter protects the pump as well as the carbs.
So i decided to take the pump and filter out and clean them before starting on the pipe-re-routing and i think I've found the cause of the fuelling issues.
This is what i found when i took the end off of the pump!
Basically _so_ much cr@p that it has deformed the little filter in the pump and was throwing everything out of kilter!
With the filter removed it was clear i'm not able to just give it a clean as it's been completely deformed by the goo!
And what was left inside just aint nice!
So that's what happens to a fuel pump if you fit it before a filter and don't clean the system through thoroughly after not using the car for 10 years!
But with a load of goo in there i was hoping that the filter would be clean.
silly me.... It just caught the finer particles!
And boy did it catch them, the filter itself is well gone
So i'm now going to have to buy a new pump and filter, but i'm also going to buy a cheap, clear, in-line fuel filter to use for a few trips just to make sure that i have now de-gunked the system fully!
I think i may also whip the carbs off and check the floats and jets while it's all apart.
2 steps forward, 1 step back....
<sigh>