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    Replaced stater and rectifier, still no spark in one cyl

    I’m at a loss here. Just picked up a boat with 40hp merc 3 cyl 4 stroke. It bogged under load, but did get up on plane once. Any time I gave gas after that it would slow or die. Batteries weren’t charging either, same voltage running or not. So I got a new stater and regulator/rectifier and it...
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    Battery not charging and no spark

    Just picked up a boat. The battery doesn’t charge- same voltage running or not, around 12.7v. Also there is no spark in the second cylinder. It’s a 2002 Mercury 4 stroke, 3 cyl. I swapped coil packs and the same middle cylinder has no spark. New plugs. I believe this to be a stator issue, but...
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    On plane, motor will rev higher, and slow down. Not cavitation

    Hey guys, I was on my friends boat not long ago and experienced something strange. 14 foot aluminum, 5 HP 4 stroke. While crossing the lake at full throttle, a few times the engine seemed to rev higher, and the boat would slow down. Just for an instant. It felt similar to cavitation, but...
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    1999 merc alarms not working but get a start beep

    Just got a 1999 merc 135. When I turn the key I run I get a beeeep beep beep. I figure that means the system is good. But I pulled the oil cap (with float) while running and he alarm did not sound. I checked and I have resistance with the float down and an incomplete circuit when up- the way it...
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    Out on the boat- need some help

    Out on the lake now. Bought a boat a month ago. 1999 135hp carbed merc. Been using for a month idling at 650 in gear. Added fresh oil the other day- a gallon into the resovoir. After about 30 minutes of running the motor started idling much higher. Picked up about 300 rpms at least. Could that...
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    Merc 135 hot at idle, cool at WOT

    Hey guys, I'm new to this motor- 1999 135HP Blue Series Carbed V6 2.0. When I got it, I replaced Plugs, water pump and thermostats. I realized today that the water coming out of the tell tale is pretty hot at idle- about as hot as a faucet will go. If I rev it to about 1500 RPM's though, it...
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    Motor running hot, bogging down after decarb

    Hey guys, Just picked up a 1999 Mercury 135HP V6 Carbed model. I ran it for about 30 minutes the first time out. Bogged a little out of the hole but got up to speed ok. Last night, I ran a decarb- one bottle in 3/4 gallon of gas method- 15 minutes at high idle, 15 minutes off. I kept...
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    90HP 1988 Johnson Spraying water around lower unit after water pump change

    Hey guys, I gave my dad my old 1988 90HP Johnson, and he just changed the water pump on it. He put it back together, and it started, shifted into gear, sprayed water from the teltale, but it was leaking/spraying water out of the seal where the lower unit connects. He said in continued to leak...
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    1995 Merc 90HP 3cyl carb - Throttle lever pulls back by itself-- limp mode?

    Hey Yall I'm new to merc, and took the boat out for a quick test. Ran it on muffs prior and seemed fine. Got out a few hundred yards, and when I push the throttle lever all the way down, it pulls itself back. Pushed it back down, and it pulled back again. It slows down to about 2000 rpm's...
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    What is the wire/hose that connects just above the front of the anti cavitation plate

    I just bought a 1995 90HP mercury and I'm trying to figure out what the black hose/wire is that connects to the front of the motor, just above the anti-cavitation plate. It is on a small 90 degree port which looks to be threaded. Mine is half broken off and I need to know what that is. Any...
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    1995 Merc 90HP Tracker outboard-- any common problems to look for?

    I never owned a merc before and just bought a 1995 90HP Merc Tracker. Are there any common problems I should look for? Anything above and beyond the typical maintenence on a 1988 Johnson 90HP? Any positive or negative reviews on this motor, or one similar?
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    Just bought 1995 90HP Merc tracker... First Merc- any advice, tips reviews for me?

    I've made my conversion from a 1988 Johnson 90HP on an 18ft CC to a 1995 90HP Merc Tracker 3 cyl Carb Model on a 19ft tracker aluminum. Any tips, advice, reviews on the Merc? I've never owned one. I'm used to changing plugs, doing decarbs and cleaning carbs yearly on the Johnson. This is an...
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    A "Friend" forgot the oil during a decarb...

    My "Friend" recently did a decarb, and forgot to add in the oil. He went through two 15 minute cycles at about 1500RPM's and then switched back to his main line, with pre-mixed gas. About 5 days and 2 fishing trips went by before he realized that he forgot to add the oil. My friend has the...
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    Converting VRO Pump to Standard Fuel pump on 90HP Johnson

    Morning guys, I have a 1988 90HP Johnson with Disconnected VRO and Pre-mix. I've got a 1989 88 SPL that I use for parts, and I was going to install the 88 spl fuel pump on my 90 and get rid of that VRO system. The VRO system has 4 ports - Gas in, Oil in, Pulse in, and Gas/Oil out. The pump...
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    What happens if timing is off?

    I'm planning on checking the timing in my outboard over the next couple of weeks just to make sure it's up to snuff. I have no reason to suspect it's off-- runs well at all RPM's. What would happen if your timing was off by say 1 degree? What if it was off by say 3 degrees? Would the motor...
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    Tick/click sounds like arcing once every 2-3 seconds at any RPM-- alarm going off.

    Guys I had my cover off yesterday, and noticed something strange that I've never heard before. I have a 1988 90HP Johnson with disconnected VRO and Pre-mix. My oil alarm went off yesterday, so I took off the cover to check around. Only thing I noticed was a tick, or a click that would happen...
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    Oil alarm going off on my disconnected VRO

    I've had my VRO disconnected, running pre-mix for about 9 trips now with no issues. Last night I took it out, and got a beep every 3 seconds or so. It would shut off for a few minutes, then come back on again. I have the bolt in the line and everything, but I'm wondering of it might me...
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    Does changing idle speed change WOT timing?

    Hey guys, 1988 Johnson 90HP-- running petty well right now. Idles at 650 in gear, tops out around 5100 at WOT. Starts well, no issues. I set the idle by closing butterflies all the way, and adjusting the timing advance screw until the idle was 650 in gear. My question is this-- does that...
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    Racor water separator-- what should be left in the bowl?

    Hey guys, New (used) boat owner here. Never used a water separator until now, and I need a little help. I drained the bowl on my Racor filter, and it seemed to be mostly gas-- maybe there was some water in it, but it certainly looked and smelled like straight gas. I put it back on, and...
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    88 Special Primer Solenoid/primer bulb starting issue

    Hello all, I just bought a center console with a 1989 evinrude 88 special. Probem is this-- motor idled low my first time out. I messed around and figured out that if I turn the red tab on the primer solenoid from left to right it speeds up the idle. So I thought that fixed it. Next time...
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