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  1. C

    Replaced stater and rectifier, still no spark in one cyl

    Just water tested after getting carbs synced. Idles great, bogs at 2k rpm. Nothing I can do. Compression is good, spark is good, carbs seem good.
  2. C

    Replaced stater and rectifier, still no spark in one cyl

    Messing with carbs now. Evened out the suction on each carb -they all draw the same amount of air in now. Before it was like cyl 1 was doing all the work, now it’s more even, but still bad throttle response
  3. C

    Replaced stater and rectifier, still no spark in one cyl

    Not a .30 gap- about a one inch gap on the spark tester. 30 kilovolt gap
  4. C

    Replaced stater and rectifier, still no spark in one cyl

    It just ran good for about 10 seconds- good throttle response. then back to running crappy. So it’s some kind of intermittent issue
  5. C

    Replaced stater and rectifier, still no spark in one cyl

    The compression went up to 210 on each cyl when I opened the throttle all the way
  6. C

    Replaced stater and rectifier, still no spark in one cyl

    Serial 0t42660 I tested spark a few days ago and it wouldn’t jump a 30 kilo gap while the #1 cyl would. Today I put a timing light on, and all 3 make have spark according to the timing light. But when it’s at idle on muffs and I spray gas into the manifold, it Boggs on #1 and 3 but almost no...
  7. C

    Replaced stater and rectifier, still no spark in one cyl

    Yes it was 115-130 on all. 210 each at wot
  8. C

    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...
  9. C

    Battery not charging and no spark

    Did some more testing. Stator numbers - yellow/yellow reads 0. Green/green reads .6. I get 40v out of the two yellow leads so I think my rectifier is bad as far as the charging part. Weak spark in cyl 2. Wouldn’t jump 30 on spark tester. Would jump about 20. Does this sound like bad stator and...
  10. C

    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...
  11. C

    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...
  12. C

    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...
  13. C

    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...
  16. C

    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...
  17. C

    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...
  18. C

    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?
  20. C

    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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