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94 merc 225 3.0 liter carb new coil packs new tps bucks

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94 merc 225 3.0...

94 merc 225 3.0 liter carb new coil packs new tps bucks snorts cough itself to die i have alot of time in this, cleaned grounds ran seperate ground to the plate on back,, changed out computer with known running engine,, changed harnesses still same problem. I have gone thru all carbs new fuel line in system all the way changed stator with other motor and flywheel still same issue runs but wont make power for our dyno and back fires acts like tps is outta range but when we check it fine we are not idiots here i own a rv and Marine shop this is my personal boat (THANK GOD) but cant seem to get over this even have a factory manuel what are your thoughts going to lunch be back 1

Submitted: 11 months ago.Category: Boat
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Answered in 8 minutes by:
9/14/2017
Marine Mechanic: Jason, Marine Mechanic replied 11 months ago
Jason
Jason, Marine Mechanic
Category: Boat
Satisfied Customers: 18,193
Experience: Degree in Marine Technology. Gas and diesel marine mechanic.
Verified

H​ello my name is ***** ***** am I speaking with? I read what you wrote. What is the history on this issue, have you ever personally seen the engine run correctly? What is the compression on the engine? What color are the spark plugs inner insulators?

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Customer reply replied 11 months ago
oh yeah this is my personal fishing boat in Mexico My name is ***** ***** 100 to 110 each cylinder Let me back up This motor ran fine , we took parts off this motor to diagnose the other motor which had a bad wiring harness on engine, put everything back on port side motor and well here we are, tps reads within specs on scanner , spark plug insulators on old plugs some are a little dark
Customer reply replied 11 months ago
let me get my marine guy freed up and I will have him call you
Customer reply replied 11 months ago
well that's fine I answered your questions what are your thoughts
Customer reply replied 11 months ago
well no online activity so what a waste of time and money
Marine Mechanic: Jason, Marine Mechanic replied 11 months ago

Hi Ken. Good morning. I waited around for 10 minutes for you after my last reply to you yesterday, when I didn't hear back I simply logged off. So what is the story on this, it was running fine but you stripped it all down for some reason, is that correct?

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