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Re: Calling all Merc Mechanics
rmb, there is hose that goes on the top barb to your carbs. i think it might be vacuum related. hope the following pics help.
t stat, like you thought http://i40.photobucket.com/albums/e2...boardtstat.jpg other side http://i40.photobucket.com/albums/e2.../porttstat.jpg barb fitting http://i40.photobucket.com/albums/e2...ddy/motor2.jpg hose linking carbs http://i40.photobucket.com/albums/e2...ddy/motor3.jpg |
Re: Calling all Merc Mechanics
rmb, there is hose that goes on the top barb to your carbs. i think it might be vacuum related. hope the following pics help.
t stat, like you thought http://i40.photobucket.com/albums/e2...boardtstat.jpg other side http://i40.photobucket.com/albums/e2.../porttstat.jpg barb fitting http://i40.photobucket.com/albums/e2...ddy/motor2.jpg hose linking carbs http://i40.photobucket.com/albums/e2...ddy/motor3.jpg |
Re: Calling all Merc Mechanics
This is shot showing the linked carbs a little better
http://i40.photobucket.com/albums/e2...ddy/motor4.jpg |
Re: Calling all Merc Mechanics
This is shot showing the linked carbs a little better
http://i40.photobucket.com/albums/e2...ddy/motor4.jpg |
Re: Calling all Merc Mechanics
The first picture of your last post, were you say " there is hose that goes on the top barb to your carbs" your thermostats is were your thumb is pointing. See the sensor wire to the alarm.
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Re: Calling all Merc Mechanics
The first picture of your last post, were you say " there is hose that goes on the top barb to your carbs" your thermostats is were your thumb is pointing. See the sensor wire to the alarm.
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Re: Calling all Merc Mechanics
run it first without any see if it fix's the problem like MJ said. then replace if it runs good with none. that was the location you posted in those pics i had an old V4 140 that ran hot all the time with t-stats but ran fine without so you can guess it i took them out never had the first problem.
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Re: Calling all Merc Mechanics
run it first without any see if it fix's the problem like MJ said. then replace if it runs good with none. that was the location you posted in those pics i had an old V4 140 that ran hot all the time with t-stats but ran fine without so you can guess it i took them out never had the first problem.
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Re: Calling all Merc Mechanics
it might be some sort of a pcv valve ???
The poppet valve is located underneath the bottom of the powerhead on the intermediate housing. you have to remove the lower cowling pan to access it. |
Re: Calling all Merc Mechanics
it might be some sort of a pcv valve ???
The poppet valve is located underneath the bottom of the powerhead on the intermediate housing. you have to remove the lower cowling pan to access it. |
Re: Calling all Merc Mechanics
I do know that MERCURY set there overheat alarm at a very low temp. A friend had a 90 HP and 2 little pieces of grass on the pickup would set the hot horn off.
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Re: Calling all Merc Mechanics
I do know that MERCURY set there overheat alarm at a very low temp. A friend had a 90 HP and 2 little pieces of grass on the pickup would set the hot horn off.
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Re: Calling all Merc Mechanics
yea that was me with the sand issue...still havent figured it out...i have changed thermostats,heat sensor switches...pulled and flushed heads/powerhead, new waterpump and impeller...still overheats.....i bought a laser thermometer and was able to figure out which cylinder was over heating.....i then pulled the thermostats out and it runs 30 degrees cooler on that cyl on the hose, i havent been able to run it in the water yet.
sure hope yours is easier to find than mine has been. |
Re: Calling all Merc Mechanics
yea that was me with the sand issue...still havent figured it out...i have changed thermostats,heat sensor switches...pulled and flushed heads/powerhead, new waterpump and impeller...still overheats.....i bought a laser thermometer and was able to figure out which cylinder was over heating.....i then pulled the thermostats out and it runs 30 degrees cooler on that cyl on the hose, i havent been able to run it in the water yet.
sure hope yours is easier to find than mine has been. |
Re: Calling all Merc Mechanics
Well, I when to church this morning and prayed for patience, then I stuffed myself at Golden Coral.
Then I removed the thermostats. I doubt that they were slowing down much water. http://i145.photobucket.com/albums/r...r/101_0080.jpg Buttoned her back up, started and ran for about 3.5 minutes before the alarm came on. AAAAAHHHHHHHHHHH!!!!!!! Kajun has turned me onto a Merc. Mechanic who helps people online (thanks dude), guess I'll see what he suggests next. You can see that it pees good at idle. http://i145.photobucket.com/albums/r...r/101_0082.jpg I did stop in Walmart after lunch and pick up a couple items. Some 5200, some silicone sealant, and a new winch strap (the hook is tied on to the old one). But instead of doing anything else to the boat today I did what any good southern dad does on Sunday afternoon, I gathered up the kids for some shootin practice. http://i145.photobucket.com/albums/r...r/101_0084.jpg http://i145.photobucket.com/albums/r...r/101_0085.jpg |
Re: Calling all Merc Mechanics
Well, I when to church this morning and prayed for patience, then I stuffed myself at Golden Coral.
Then I removed the thermostats. I doubt that they were slowing down much water. http://i145.photobucket.com/albums/r...r/101_0080.jpg Buttoned her back up, started and ran for about 3.5 minutes before the alarm came on. AAAAAHHHHHHHHHHH!!!!!!! Kajun has turned me onto a Merc. Mechanic who helps people online (thanks dude), guess I'll see what he suggests next. You can see that it pees good at idle. http://i145.photobucket.com/albums/r...r/101_0082.jpg I did stop in Walmart after lunch and pick up a couple items. Some 5200, some silicone sealant, and a new winch strap (the hook is tied on to the old one). But instead of doing anything else to the boat today I did what any good southern dad does on Sunday afternoon, I gathered up the kids for some shootin practice. http://i145.photobucket.com/albums/r...r/101_0084.jpg http://i145.photobucket.com/albums/r...r/101_0085.jpg |
Re: Calling all Merc Mechanics
I could tell in hte 1st pic that was the fingers of a policeyman, they had donut sugar on them. 8) ::) ::)
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Re: Calling all Merc Mechanics
I could tell in hte 1st pic that was the fingers of a policeyman, they had donut sugar on them. 8) ::) ::)
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Re: Calling all Merc Mechanics
Powder surgar and gelly on the fingers. LOL !!, that was good. ;D
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Re: Calling all Merc Mechanics
Powder surgar and gelly on the fingers. LOL !!, that was good. ;D
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Re: Calling all Merc Mechanics
If it were a thermostat problem, the water would be coming out cold because none would be circulating through the engine block and picking up heat. If the water is coming out hot, it is a insufficient flow problem. Check your water pump(s).
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Re: Calling all Merc Mechanics
If it were a thermostat problem, the water would be coming out cold because none would be circulating through the engine block and picking up heat. If the water is coming out hot, it is a insufficient flow problem. Check your water pump(s).
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Re: Calling all Merc Mechanics
Quote:
??? ??? ::) Ok the water goes threw the motor first before it comes out the pisser lol |
Re: Calling all Merc Mechanics
Quote:
??? ??? ::) Ok the water goes threw the motor first before it comes out the pisser lol |
Re: Calling all Merc Mechanics
I did notice two things running the motor at around 2K rpm, one, its loud as H&LL!!!!! (glad the little old lady next door is deaf), the other was that the stream was not steady. *I bet it needs an impeller.
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Re: Calling all Merc Mechanics
I did notice two things running the motor at around 2K rpm, one, its loud as H&LL!!!!! (glad the little old lady next door is deaf), the other was that the stream was not steady. *I bet it needs an impeller.
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Re: Calling all Merc Mechanics
how long has it sat? look for dirty doober nest may have a stopped hose somewhere.
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Re: Calling all Merc Mechanics
how long has it sat? look for dirty doober nest may have a stopped hose somewhere.
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Re: Calling all Merc Mechanics
My Merc. doesnt pee steady that I noticed. Was told thats normal for Mercs. When I bought mine. Found alot of newspaper in te motore where mice were living. :-/
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Re: Calling all Merc Mechanics
My Merc. doesnt pee steady that I noticed. Was told thats normal for Mercs. When I bought mine. Found alot of newspaper in te motore where mice were living. :-/
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Re: Calling all Merc Mechanics
My 150 MERC didn't spray a steady stream either.
This may be a stupid question, but are you sure it is the overheat turning the horn on? Try unhooking the overheat sensors one at a time to see if it is actually the overheat sensors doing it. There is also a chance that parts of your old t-stats are obstructing flow somewhere in there fropm the looks of what you removed. Try running it with the t-stat covers off fopr just a few seconds and make sure water is flowing up to that point with a good stream. |
Re: Calling all Merc Mechanics
My 150 MERC didn't spray a steady stream either.
This may be a stupid question, but are you sure it is the overheat turning the horn on? Try unhooking the overheat sensors one at a time to see if it is actually the overheat sensors doing it. There is also a chance that parts of your old t-stats are obstructing flow somewhere in there fropm the looks of what you removed. Try running it with the t-stat covers off fopr just a few seconds and make sure water is flowing up to that point with a good stream. |
Re: Calling all Merc Mechanics
Hmmm, maybe a bad sender? Have you put your hand on the heads while she's running? Maybe she's not really hot afterall? I do know that Mercs don;t pee till the stats open, then they pee different as the stats open and close, hence the reason not consistent as noted above. Your stats have been hollowed out, so that shouldn't be the case.
Just trying to keep the flow of ideas going. Airslot |
Re: Calling all Merc Mechanics
Hmmm, maybe a bad sender? Have you put your hand on the heads while she's running? Maybe she's not really hot afterall? I do know that Mercs don;t pee till the stats open, then they pee different as the stats open and close, hence the reason not consistent as noted above. Your stats have been hollowed out, so that shouldn't be the case.
Just trying to keep the flow of ideas going. Airslot |
Re: Calling all Merc Mechanics
most likely they were having heating issues so they took the t-stats out. ???
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Re: Calling all Merc Mechanics
most likely they were having heating issues so they took the t-stats out. ???
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Re: Calling all Merc Mechanics
Shoot on down there SKOOL and rebuild that puppy.
You can always rebuild that riding mower another day. :P |
Re: Calling all Merc Mechanics
Shoot on down there SKOOL and rebuild that puppy.
You can always rebuild that riding mower another day. :P |
Re: Calling all Merc Mechanics
Great Pics. of the kids Randleman. ;)
What year is the motor ? Whats the asking price. |
Re: Calling all Merc Mechanics
Great Pics. of the kids Randleman. ;)
What year is the motor ? Whats the asking price. |
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