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Over heating 2006 mercury 25 elpt efi 4s outboard

Water coming out hot from water pump outlet

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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bunnydawg
  • 5158 Answers

SOURCE: mercury 50 hp outboard

I actually thought it was down by the prop... i was wrong....

Pretty good diagram here.... look at part number 1

http://www.sterndrive.info/mercury-outboard-parts/60hp_to_125hp_component_layout.html

scroll down for the part cost and description.

Robert

Please take a moment to rate this solution.. thanks

Posted on Jan 23, 2009

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  • 10 Answers

SOURCE: Mercury 20Hp impeller/water pump location

It is located inside the lower unit housing. They are fairly easy to replace. Most Mercury authorized service stations will charge around $120 for this task.

Triton72

Posted on Mar 26, 2009

  • 1 Answer

SOURCE: 1996 Mercury 150 Nitro EFI

Dont have the manual in front of me...recollect that there's two types of warnings. The pulsating warning is oil (starts with 30 minutes of oil left) or the fuel filter (or sperator, something like that) may have water in it. Running outboard with cover off, is a little black box that would have a red light lit if that's the case. If oil full & no red light, may be oil injection system...would also check to make sure lines aren't pinched, etc. Mine has been specific to oil the two times its gone off.

The full non-pulsating is engine overheat. Not sure beyond that.

Not much, but hopefully gets you going.

Posted on Jun 23, 2009

  • 154 Answers

SOURCE: Yamaha 50hp outboard

its working fine

Posted on Aug 03, 2009

  • 58 Answers

SOURCE: MERCURY OUTBOARD HAS BEEN SITTING (BY SALT WATER)

hi either that or remove the power head so it is easier to work on you will have to replace the water pump impellor anyway
i have done the following with seized motors and" most" of the time it works
use heat on all the bolts before you try and undo them heat the head of the bolt up then allow to cool then use a socket or ring spanner the heat will travel down the bolt ,transfer into the ally casting expand it and you will get the bolt out without shearing it
pistons /this sounds harsh but the motor is goosed at the moment anyway make shure power head is very sequre /socket or ring on flywheel nut 4/5 ft piece pipe over socket bar heat up engine oil OUTSIDE to almost boiling pour down plug holes until full leave 10 min pour oil out reheat it pour it in again 5 min try the pipe/socket clockwise GENTLY you are using a lot of leverage here just move it back and to a bit /then a bit more /then a bit more until it is free now strip it clean the bores up renew what you have to /put it back together
if that didn't work /i presume all the ancillerey's are off the motor /carbs ,elecrics etc plugs out /put p/head in a bucket full of diesel oil( cheaper than penertrating oil and better) leave it 7 days get ALLthe oil out send wife/partner /g/friend out for the day put the oven on max heat 300 degput motor in oven 2 hours max quick as you can /leather gloves or what ever hot oil in cylinders get a socket on the crank shaft and try it
last try you can only do this if a piston is on or near tdc modify a spark plug to take a grease nipple /cut the thread off /long reach plug and braze a grease nipple in it /put as much grease in the bore as you can screw the modified plug in and use a grease gun to force grease in as the grease will not compress it WILLpush the piston down untill it uncoveres a port /messy but at least it has moved it once you have got some movement eventualy the motor will free off best of luck merlin v12

Posted on Aug 29, 2009

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