Have you ever watched your mechanical fuel pump pump fuel? In this clear fuel filter I watch the gas coming in and it is a dribble. The filter never fills. The stream from the fuel pump is like a faucet left on barely cracked open. It is steady but only a little bit. Also, the hard line where it makes a 90 and turns into the arb is narrowed in the middle of the 90 bend. I wonder if this thing is starving for fuel is why it will not start hot. My other kids car had way too much gas. This one does nto seem to be getting enough,.