it's an 81 aircooled vanagon:
in the morning (outside temperature ~50), it immediately starts. But
later in the afternoon (around 5 pm) it turns over but doesn't fire
up. Only playing with the gas pedal makes it eventually run. I noticed
that behavior the last couple of weeks when it got warmer (afternoon
temperatures are in the 80s now). Any suggestions what to look for?

Karl
1981 Westy "Jenny"
2000 VW Jetta GLS VR6
Wilmington, DE