Reply To: 1989 780 Turbo for sale

[onakaw]

#12654

Throw some fuel down the intake and see if it fires, if it does you have a fuel pump problem.

A good test I use on troubleshooting fuel pumps is to take out the fuel pump fuse and make a hot lead from a good 12v source. When you jump one side of the fuse socket the front pump runs, then jump the other socket and the rear pump will run. If both pumps run its most likely the white relay.  Almost any white relay can be repaired by popping off the cover and resoldering all bad joints