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    engine stalls when steering wheel is fully turned to either side

    Here's a new problem that i'm having a hard time figuring out. 1999 merc 4.3L TBI (EFI) Engine runs fantastic and recently had full tune up and fuel pumps, etc... when docking and turning fully to the left (or now to the right too) the engine will stall. If i'm quick and let off steering...
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    merc 4.3l Cool Fuel and Fuel Pump Replacement Question

    Hi, I have a 1999 Merc 4.3L EFI setup. Boat runs absolutely perfect from 0-3800 rpms. then starts to backfire. I back off the throttle and resumes running fine again. How do you guy check your fuel pressure on these engines? Also, has any one just swapped out the fuel pump and used the old...
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    Booster Pump install on a 1999 mercruiser 4.3L TBI (EFI) Questions on the pump and wire pick up?

    Hi, I am experiencing the common vapor lock issue and am trying to find an affordable booster fuel pump solution. Twin Engines: 1999 Mercruiser 4.3L EFI (TBI) The mercruiser plug and play kits will run me $900 in parts and then 2-3 hours labor totalling $1200. For $160, I am thinking of...
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