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    90 Amp Fuse Question

    I am changing my 6.2 MPI starter and noticed that the hot 12v battery lead connects to the solenoid terminals directly, with the 90 amp fuse supplying the smaller red wire that goes to the red circuit breaker on top of the engine. I can’t see this level of detail on the wiring diagrams...
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    Oil level too high?

    My 6.2 MPI (# 1A079680) had a badly rusting oil pan due to salt exposure. I found a nice 350 aluminum pan that fit perfectly. To install this required the removal and replacement of the Dipstick tube. Since that time, after training the oil using the bottom of sump drain tube and replacing the...
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    Mercruiser 6.2 chirping noise

    Group, I have a 2008 Merc 6.2 MPI Bravo 3 with 500 hours. We just had the engine out to replace a corroded Y pipe. We replaced the raw water pump, alternator and P/S pump. After about 8 hours, a chirping noise developed, apparently from the front of the engine. The serpentine belt is fine...
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    Mercruiser y pipe corrosion

    Has anyone tried powder coating or other techniques to minimize corrosion on the lower flange area of the aluminum y-pipe, which lives in bilge water and outside raw water? This $1000 part requires pulling the engine to replace!!
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    Intake resonator for 6.2 MPI

    A number of articles on the MerCruiser 6.2 MPI note the addition of an intake resonator and aft-facing throttlebody for intake noise mitigation. I don’t see these parts on my MerCruiser engine or service manual. Does anyone know how you can tell if they are present?
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    Lowrance LST 3800 compatibility

    My 2008 Tahoe has a Lowrance LST 3800 in-dash depth finder with a thru-hull 200 Hz transducer. The display is failing and not amenable to repair, but the depth function works. I have been unable to find a replacement unit, and the thru-hull transducer can’t be replaced without pulling the...
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    Mercruiser 6.2 MPI Bravo 3 overheating

    There have been many posts on mercruiser small block stern drives With raw water cooling and dry joint manifolds overheating. One scenario is that the engine overheats at idle but not at speed. Many owners have replaced the raw water impellers, thermostats and water circ pumps without fixing...
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