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  1. 2

    How to check DVA on a coil?

    I am troubleshooting my 1994 90hp 3cyl Mercury 0G049145 with the switchbox/coil/stator/trigger/voltage reg/rectifier and replaced all of the ignition parts with new CDI parts. ​Motor does not idle well, sneezes or coughs every 10sec during idle and surges mid rpm's. Sometimes dies and can not...
  2. 2

    1994 3cyl 90hp Mercury carb retaining nuts/bolts proper torque 45 ft lbs???

    I removed all 3 carbs and cleaned and installed new carb kits on my 1994 3 cylinder 90hp Mercury and the Mercury factory service manual says to torque the 4 nuts and 2 lower bolts which retain the carbs/air box plate to 45 ft-lbs. This seems to be way too much torque to me and I am thinking 45...
  3. 2

    1984 75hp 4cyl 2 stroke bogs down WOT when hot

    Need some opinions please on a problem I have with a 1984 75hp 4cylinder 2 stroke: Runs great cold, idles great in my tank (or pond in my case, LOL's!), runs great in my tank for extended periods, but rpm's never get above 3 or 4000 since the boat is on the trailer. Motor ran great for 3 years...
  4. 2

    How to wire up a substitute 4 post rectifier for standard 3 post Mercury rectifier?

    Sometime back after getting tired of paying $30+ for every Mercury 3 post rectifier that went bad, I checked this forum and got some great advice to stop using the Mercury 3 post rectifier and purchase an All Electronics FWB-352 rectifier 35 A 200 PIV Bridge Rectifier at $2.50 each. This new...
  5. 2

    question on 84 75 powerhead rebuild

    Need some advice on an 84 75hp powerhead rebuild, particularly the direct charge pistons. Service factory manual says to heat up the direct charge pistons with a torch lamp to 190.F to remove and install piston pin. This does not sound like a lot of fun and how do you keep the needle bearing...
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