Search results

  1. M

    "portable" tach?

    Dont know if this is the right forum, I am trying to verify the reading on my dash tachometer. Is there a temporary tachometer I could hook up to check what my RPMs really are? I Think I have seen some for working on single cyl 4 stroke lawnmower engines, etc. Where could I find one that...
  2. M

    Mercury=Ford?

    Is Mercury outboards the same Mercury from the automotive industry (Ford/Lincoln/Mercury)??
  3. M

    4400RPM@WOT?

    Hi all. As a boating newbie I just wanted to check to see if this was appropriate. I have a 1985 Mercury 90, straight 6 cyl. Pushing the throttle all the way forward gets me 4400 RPM on the gauge in the dash. I believe this gauge is run to the throttle box and gets its info through the...
  4. M

    Adding temp and water pressure gauges?

    Seems like water temp and pressure would be a good thing to keep an eye on... I am wondering if my 1985 L6 90 HP merc has the capability to bolt on these gauges. I noticed two areas on the powerhead (by the spark plug holes) that might work,<br /><br />...
  5. M

    How do I know what gear lower unit is in?

    Ok, put new pump upper housing and impeller on lower unit. Driveshaft turned fine (when I was twisting the impeller into the upper housing-everything I read says to go clockwise). Went to install lower unit back onto leg, could not turn driveshaft in order to mate with upper half of motor.<br...
  6. M

    Seloc book sucks. Where are the thermostats?

    The Selco book I bought only mentions thermostats in two places and neither of them show the location in the engine. Where do I find them and what would be a good way to back flush the cooling system to make sure I've got all debris out of it? I read to shoot compressed air in to the telltale...
  7. M

    Water pump housing hole out of round

    On Merc 90 HP straight 6 from 1985;<br /><br />The tell-tale goes from stream at low RPMs to spray/mist at high RPMs. I figured impeller might be the problem. Opened up water pump and impeller looks fine! Only thing I noticed is that the top housing, the metal inner part, not the plastic...
  8. M

    I want to take a shotgun to my outboard

    I pulled out all the bolts and nuts that hold the lower unit on and the ^(*&@$# thing won't drop down. I put it in forward as the book says (tried neutral too in case the book was wrong again). I pulled the prop off just for the heck of it, I was thinking maybe there was a hidden fastener or I...
  9. M

    What's a poppet valve?

    And where can I find it?
  10. M

    3 hours @ $65 per hour?

    Can someone explain why I've been getting quotes of 2.5 to 3 hours to replace a water pump impeller? I am trying to do it myself (and failing miserably) but it seems to me like it should be a 15 minute job for a pro... remove the bolts, drop the lower unit, take the pump cover off, put the new...
  11. M

    First time out - am I crazy or is something wrong?

    I actually followed the advice in the post that advises newbies on what to do before posting a message. I read through a lot of messages on this board and it sounds like a lot of people have the same basic problem... overheating, or at least hearing the overheating warning and not being sure...
View older results
Top