HELP???

ive got an 87 mazda 2.0 and the inline fuel filter, i can see air bubbles constantly coming thru that. the truck will run fine for a little while then it just shuts down when im in 4th or 5th gear just cruising, so i dunno if its related problems or what any help would be appreciated thanks

check for cracks in your fuel lines. thats the only way air can get in the system. also could check fitting connections.

my 86 b2k does the same thing, thanks for the info.