tired of trying to figure out vapor lock-ecm issue ...etc problem

[pulliams1910]

ok so here is what has been done.....new fuel pump.....made sure has no ventilation problems which has helped alot.....but now ecm fuse blowing every so often .... and vacation time is a few days away HELP!...it is a 305 mercruiser engine

 

[j cat]

ok so here is what has been done.....new fuel pump.....made sure has no ventilation problems which has helped alot.....but now ecm fuse blowing every so often .... and vacation time is a few days away HELP!...it is a 305 mercruiser engine

since the fuse is intermittent on failure did you check all the wires for damage ? what does the blown fuses look like ...? a dead short will vaporize the filament...

electric fuel pump ? does that run off the ECM fuse ?

 

[pulliams1910]

fast burn fuse .....right now does not do it but every so often....

 

[pulliams1910]

have gone over and over wires not detected any thing as of yet

 

[j cat]

have gone over and over wires not detected any thing as of yet

does the ECM feed the fuel pump ? if so put a fuse in the fuel pump feed wire.

 

[guyjg]

Remove the ECM wire connectors and check for corrosion on the ECM and the connectors.