P1300 Volkswagen -

Question

engine runs bad, little power, missfire until it runs for a while (warms up)- most of the time
some times runs fine from start
have codes P1300, P0300, and P0302

Answer 1

P1300 Misfire deteced : Fuel level too low

Fuel pressure , have the fuel pressure check the specification are 2.5 bars with the vacuum hose connected to the fuel pressure regulator and 3.0 bars with the vacuum hose to the regulator disconnected.