So the boss lady little mazda b2000 pickup has started vapor locking on us when the fuel gets hot and you have to re prime the fuel filter canister to get it to run again. This all started after she had it serviced and they changed the filter. So what could start this before I tear in to it I am leaning towards cracked fuel line near the canister that they tore changing the filter??

 

I know this isnt it but on our VW after changing the filter it began to vapor lock when it got got. Turned out it was because the filter used was bigger than the original (you would think that would be a good thing) but it actually made it vapor lock.