My 1977 459sl has sat for 10 years. Ran fine when I put it there. Put gas in the fuel delivery and it started. Removed both lines to the distributor cranked engine no gas. Blew into lines both blocked. Removed the fuel pump assembly complete to replace. Blew into both lines again, one was free and one still blocked. My question is should both lines be free. would very much appreciate any advice thanksJimNo in

 

Sorry Typo