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2005 200EFI Mercury hard to start
I got 05 200EFI Mercury # 1B043258. That cranks a long time before it wants to start. I installed new plugs, check spark, fuel pressure is around 50psi while cycling and set at 40psi when its done. Fuel pressure bleed down 4psi in 6min. I have battery voltage at the fuel pump, starting solenoid. last time I took the boat out the ignition switch did not crank the boat over, bump the key a couple of times and it started to crank. Not sure if that were my problem is. I bought this boat a couple of month ago it started great the first 3 or 4 times and the last couple times it been getting worth. Any suggestion I'm all ears.
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Yes, check voltage at the starter, when the motor is not cranking.
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Mercury 3L/4 Stroke/Verado Moderator
Also load test battery and confirm it's actual tested rating (provide that here).
Check cannon-plug connector for clean pins, spread male pins slightly with exacto knife, reconnect and strap in place.
Can't stress the battery (and it's connections) enough.