WeekEnd Lifestyle
Member
Help...My boat has the above engine with Bravo 3 od. The engine runs smooth and has no missing.
I took it to Dupert's Marine Service on Lake erie and the mech came out and hooked up a hand held computer thing. Says my ECM shows no bad codes. He listened and said, yep it idles great, reves great. Took it out, best is 4000rpm and motor doesn't sound like it's at WOT. Have trouble getting on plane with just 4 *****s on board. At 1 point I re propped from 24 to 22 which should have taken the WOT from rated 4600 to 5000. Not 1 rpm difference.
Well the Mech. changed my plugs, wires, dist and rotor, fuel water seperator, tested the fuel pressure, checked comprssion of all the cylinders everything a okay. But still test run 4000 RPM. Tach is correct.
Well he did find that the dwell does not open after 2500 RPM. Stays the same up to 4000 rpm.
So after all this I get a bill for 845 dollars and still nothing. They said mercruiser said it was the ECM module yet it doesn't show up on the testing?
1400 to replace this. Now I am ticked off because plugs, wires, dist cap rotor will not affect wot when a boat is running smoothly. If wires are bad or plugs or any of the other things replaced, it will run rough.
And what if it's not the module? What else could do this? Any suggestions.
He did say something about the anti knock not showing up and gently used a hammer on each side of the engine with the hand held computer hooked up.
Any Ideas? Can the ECM be rebuilt? Upgraded? HELPPPP I am retired and don't have this kind of $ to keep guessing.
Thanks alot
Gator
I took it to Dupert's Marine Service on Lake erie and the mech came out and hooked up a hand held computer thing. Says my ECM shows no bad codes. He listened and said, yep it idles great, reves great. Took it out, best is 4000rpm and motor doesn't sound like it's at WOT. Have trouble getting on plane with just 4 *****s on board. At 1 point I re propped from 24 to 22 which should have taken the WOT from rated 4600 to 5000. Not 1 rpm difference.
Well the Mech. changed my plugs, wires, dist and rotor, fuel water seperator, tested the fuel pressure, checked comprssion of all the cylinders everything a okay. But still test run 4000 RPM. Tach is correct.
Well he did find that the dwell does not open after 2500 RPM. Stays the same up to 4000 rpm.
So after all this I get a bill for 845 dollars and still nothing. They said mercruiser said it was the ECM module yet it doesn't show up on the testing?
1400 to replace this. Now I am ticked off because plugs, wires, dist cap rotor will not affect wot when a boat is running smoothly. If wires are bad or plugs or any of the other things replaced, it will run rough.
And what if it's not the module? What else could do this? Any suggestions.
He did say something about the anti knock not showing up and gently used a hammer on each side of the engine with the hand held computer hooked up.
Any Ideas? Can the ECM be rebuilt? Upgraded? HELPPPP I am retired and don't have this kind of $ to keep guessing.
Thanks alot
Gator