My 300D runs fine when it's running, but my injector pump seems to be sucking air from somewhere to cause me to have to re-prime the system using the hand plunger (for a lack of homework proper usage of part).every 15-30 minutes.

feed tube to primary and secondary filter clean, full and unobstructed at all times even after shutdown from issue. (changed multiple times while troubleshooting this issue!).

Return, (amber in color) see thru tube is never full and does have air bubbles even after priming.(not sure if never full part is normal, obviously air is not?).

After driving for 15 minutes or so she will start starving for fuel and eventually shut down. I am able to re-prime from banjo bolt and release the air (of which there is plenty of!) and go for another run! ooh! what fun!.

Smoke is minimal when running normally. smokes only when starting to starve and mostly of a more whitish color.

Temperature between 40-70o Celsius at normal operating temp.

Someone please help before I drive myself and this monster off a cliff!

Thanks,
Dave C.