Hi all, got my engine in the car a couple of weeks ago. it starts, runs and moves.
However if you load the engine much at all/ have the RPM to high for any period, it bogs down (think the car can do 30mph max).
What it feels like to me is, it barely has enough fuel pressure to keep the float chamber filled so when you start driving it it kind of empties, lift off the throttle for a bit and it seems to recover.
The fuel pump and filter are in the boot attached to the rear firewall, the pump is facet like this one:-
My other theory is the needle is so very wrong that after a certain point it either leans out or runs rich. And finally the worst possibility is the cam timing being wrong but I don't think this is likely because I thought I was fairly meticulous in setting it up (kent 286 to 104 degrees).
I have all but eliminated the ignition timing, changed the plugs and leads. Turning the distributor in either direction makes it run worse.
Carb is a hif38 which I am using to try and run in the engine (will be changed to twins). I have also tried a single HS4 on the engine with the same effects (but slightly worse).
I do have a fuel pressure regulator on the car which I am going to take off tonight just to try.
Any help or advice would be greatly appreciated!!