sucking air
 

1987 f250 with dual 5inch stacks and a glasspack.its sucking air from somewhere

How much timing advance on the IP??????

i woukldnt say it is sucking air. timing is advanced for sure.

the pump is turned up quite a bit.only reason why i said its sucking air is cus thats what my dad said.i just want to know why it starts up like crap

do any of your return lines leak?

also the timing being advance will cause hard starts.

no none of them leak.sometimes it will start up and die other times it just starts like crap or it starts with no problems

yes, fuel issue. somewhere u have a leak.

alrite i will double check everything