What was found
STRONG ODOR OF FUEL FUMES IN COCKPIT, INCREASED AFTER TAKEOFF DURING CLIMB. UPON ARRIVAL, NOTICED STRONG DIESEL ODOR IN ACFT EE AND PIT AREAS ALSO IN FLT DECK. OUR HEAT DUCTING WAS ALSO STRONG ODOR. CHECKING COALASTER BAGS. SUSPECT HEAT CART CONTAMINATION INTO CONDITIONED AIR MANIFOLD. ATB, EMERG DECLARED. OUR GSE VERIFIED THE HEAT CART INJECTOR LINE WAS LEAKING DIESEL INTO THE HEAT CART AIR SUPPLY FAN. COALASTER BAGS HAD HEAVY SMELL CONTAMINATION. R & R BOTH COALASTER BAGS REF MM 21-55-051-4. RAN APU AND PACKS. CONDITIONED AIR CLEARED UP NO ODORS NOTICED. RAN ENGS JRH WITH PACKS AND BLEEDS ON. SYS GRD OPS CHECKS OK. OK TO CONTINUE.