well... the odds are , not... but as soon as you fix the wire and try it you will know. if it starts then you are ok... if not, look for tripped breakers and bad fuses before you slit your wrist.

is this some sort of big motor with big fuel demands ? like 6 or 700 hp ? i can't see how a conventional hi press pump that can service 500 hp can be more than 300 bucks... the bosch ones were only a couple hundred ... but maybe i'm just way out of touch. wouldn't be the first time...

It is a 250 Merc EFI outboard, fits in the VST tank, there are probably crossovers to aftermarket, but I couldnt tell ya what the # is.. I agree that it SHOULD not have hurt the ECU's, but ya never know if it fedback thru ground. However, if it did, I happen to have a used set on the shelf for that motor:drink:

Here is the stock fuel pump # from BAM marine

808505T01 PUMP KIT-FUEL $670.17 $590.69 $0.00 $0.00 1.38 Lbs No Picture

sorry... i get it now. for sure that's application specific. you probably said somewhere it was an outboard but i just missed it. well... i hope youre ok. i notice that pump has screws holding it together... thats good news. those vane pumps will jam if anything at all gets in there which will stall it and maybe do what yours did... i would carefully have those screws out and clean that assy out ... that might buy you something...

when i got my motors they had the std cool fuel deal and neither pump would run. all i did was clean them and corrosion x them and marvel mystery oil/fuel mix them and then let them run unloaded for a while just recirculating gas/oil mix until they ran with that nice steady state 9000 rpm hum... and they are still running 5 years later...

Do you guys know what size gauge wire that is?

Hard to tell from the pic, but judging from what I see next to your Batt cable I would say 10 - 12 guage. I can look at mine tonight or tomorrow, and tell ya for sure. Or you could take the one off the other motor down to the store and match it up.

10ga

make new wire and add a 30 amp or so circut breaker in line, just use a std auto 2 post....that might help find the issue and not be a bad idea anyway ?

ya think ? looks more like 6 or 8 to me... but hard to tell like you say

Fixx
 

two things came to mind when i saw the wire was...When a wire is loose at a connection it will usually burn the end of the wire from it arcing out and heating up and melting...also if the main positive cable is loose or defective it will use the smaller wire as the main big positive cable and melt the wire in the process..

The fuel pump should run off a relay so the ECM should not have been damaged. I would also say 10 gauge wire at most. Assuming the fuel pump is toast you may be able to remove it from the VST housing and take it to a "good" auto parts store and they may be able to match it.