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-   -   Poppet valve '99 Merc 150 (https://forums.wmpdevserver1.com/community/showthread.php?t=7829)

randlemanboater 02-22-2007 12:59 AM
Poppet valve '99 Merc 150
 
Today I also inspected the poppet valve, I think.

Anyone here know what it looks like?

http://i145.photobucket.com/albums/r...r/101_0097.jpg

http://i145.photobucket.com/albums/r...r/101_0101.jpg

http://i145.photobucket.com/albums/r...r/101_0100.jpg

Other than some small sea shells, I didn't see anything out of the ordinary, of course I've never seen a poppet valve so I have no idea.

randlemanboater 02-22-2007 12:59 AM
Poppet valve '99 Merc 150
 
Today I also inspected the poppet valve, I think.

Anyone here know what it looks like?

http://i145.photobucket.com/albums/r...r/101_0097.jpg

http://i145.photobucket.com/albums/r...r/101_0101.jpg

http://i145.photobucket.com/albums/r...r/101_0100.jpg

Other than some small sea shells, I didn't see anything out of the ordinary, of course I've never seen a poppet valve so I have no idea.

msbhammer 02-22-2007 01:20 AM
Re: Poppet valve '99 Merc 150
 
Randleman, your learning quick. Good Job. ;D

msbhammer 02-22-2007 01:20 AM
Re: Poppet valve '99 Merc 150
 
Randleman, your learning quick. Good Job. ;D

randlemanboater 02-22-2007 01:27 AM
Re: Poppet valve '99 Merc 150
 
I learned today that if you pick up your camera with grease on your hands, your camera gets grease on it.

randlemanboater 02-22-2007 01:27 AM
Re: Poppet valve '99 Merc 150
 
I learned today that if you pick up your camera with grease on your hands, your camera gets grease on it.

msbhammer 02-22-2007 01:45 AM
Re: Poppet valve '99 Merc 150
 
LOL, Ahhh, that was funny as hell. ;D ;D ;D

msbhammer 02-22-2007 01:45 AM
Re: Poppet valve '99 Merc 150
 
LOL, Ahhh, that was funny as hell. ;D ;D ;D

C YENSEN 02-22-2007 01:48 AM
Re: Poppet valve '99 Merc 150
 
Quote:
Originally Posted by randlemanboater
I learned today that if you pick up your camera with grease on your hands, your camera gets grease on it.
That is a hard lesson to learn, I have been there, wait till you have to explain it to the wife......lets just say she bought a new camera and gave me the greasy one. :'(

C YENSEN 02-22-2007 01:48 AM
Re: Poppet valve '99 Merc 150
 
Quote:
Originally Posted by randlemanboater
I learned today that if you pick up your camera with grease on your hands, your camera gets grease on it.
That is a hard lesson to learn, I have been there, wait till you have to explain it to the wife......lets just say she bought a new camera and gave me the greasy one. :'(

C YENSEN 02-22-2007 01:50 AM
Re: Poppet valve '99 Merc 150
 
Sorry.....but before this thread gets totally hijacked......I am sorry but I am not an OB guy. I have no idea what that valve is supposed to look like. I am sure Skools, or MJ will be along shortly. ;D

C YENSEN 02-22-2007 01:50 AM
Re: Poppet valve '99 Merc 150
 
Sorry.....but before this thread gets totally hijacked......I am sorry but I am not an OB guy. I have no idea what that valve is supposed to look like. I am sure Skools, or MJ will be along shortly. ;D

Blue_Runner 02-22-2007 06:46 PM
Re: Poppet valve '99 Merc 150
 
I don't know what they look like either but I found this

Poppet Valve Kit for Mercury:
http://www.colortomorrow.com/obimages/8030.jpg

Blue_Runner 02-22-2007 06:46 PM
Re: Poppet valve '99 Merc 150
 
I don't know what they look like either but I found this

Poppet Valve Kit for Mercury:
http://www.colortomorrow.com/obimages/8030.jpg

Blue_Runner 02-22-2007 07:02 PM
Re: Poppet valve '99 Merc 150
 
More poppet research. Commentary on someone elses problem:
Quote:
Did you check the poppet valve and springs?? Double-circular cover on the lower starboard side of the block, held on by 4 (maybe 5) bolts. I believe you will find it helpful to remove the lower motor cover on that side in order to gain access. The poppet controls cooling water flow for hi-speed operation, is supposed to unseat and flow max water around 2500 rpm's (?? I think).
-John
Quote:
This sure sounds like the poppet valve problem. When that valve is working correctly, you can watch the temp gauge climb to about 3/4 at high idle speed. At around 2500 rpm when water pressure builds, the gauge will drop rapidly down to 1/4 when the valve opens up, and the temp will stay down there up to WOT. Your new water pump eliminated that as a problem source, leaving other things to look for. Other than poppet valve, the other possibility is some kind of blockage in the cooling passages. Pulling the heads off and checking the water jackets is called for there. With a motor that old used in salt, replacing the head gaskets is not a bad idea anyway. Because it is easier to replace or clean the poppet valve assembly than it is to pull the heads, I would look at the valve next. Not sure about the big blocks, but with the small block V6s, you have to remove the lower engine cowl to get to the valve assembly. Problems like this are a process of elimination. With a used motor of unknown history, replacing these components as you go through the elimination process leads to peace of mind and confidence in your power plant.

Blue_Runner 02-22-2007 07:02 PM
Re: Poppet valve '99 Merc 150
 
More poppet research. Commentary on someone elses problem:
Quote:
Did you check the poppet valve and springs?? Double-circular cover on the lower starboard side of the block, held on by 4 (maybe 5) bolts. I believe you will find it helpful to remove the lower motor cover on that side in order to gain access. The poppet controls cooling water flow for hi-speed operation, is supposed to unseat and flow max water around 2500 rpm's (?? I think).
-John
Quote:
This sure sounds like the poppet valve problem. When that valve is working correctly, you can watch the temp gauge climb to about 3/4 at high idle speed. At around 2500 rpm when water pressure builds, the gauge will drop rapidly down to 1/4 when the valve opens up, and the temp will stay down there up to WOT. Your new water pump eliminated that as a problem source, leaving other things to look for. Other than poppet valve, the other possibility is some kind of blockage in the cooling passages. Pulling the heads off and checking the water jackets is called for there. With a motor that old used in salt, replacing the head gaskets is not a bad idea anyway. Because it is easier to replace or clean the poppet valve assembly than it is to pull the heads, I would look at the valve next. Not sure about the big blocks, but with the small block V6s, you have to remove the lower engine cowl to get to the valve assembly. Problems like this are a process of elimination. With a used motor of unknown history, replacing these components as you go through the elimination process leads to peace of mind and confidence in your power plant.

phatdaddy 02-22-2007 09:46 PM
Re: Poppet valve '99 Merc 150
 
RMB, how d id you pull the lower cowling pan. I need to get to my steering arm to clean and paint.

phatdaddy 02-22-2007 09:46 PM
Re: Poppet valve '99 Merc 150
 
RMB, how d id you pull the lower cowling pan. I need to get to my steering arm to clean and paint.

randlemanboater 02-23-2007 10:24 AM
Re: Poppet valve '99 Merc 150
 
Quote:
Originally Posted by phatdaddy
RMB, how *d id you pull the lower cowling pan. *I need to get to my steering arm to clean and paint.

There are 4 bolts holding the 2 pieces together, 2 in the back inside the cowling, one in the front inside and one in the front outside, right near the pivot point. I had to remove the airbox to get the front inside one out, the rest were no prob. The it is a rasslin (wrestling for you yanks) match to pull the covers off of the rubber mounts, for each side pull straight towards the sides of the boat

randlemanboater 02-23-2007 10:24 AM
Re: Poppet valve '99 Merc 150
 
Quote:
Originally Posted by phatdaddy
RMB, how *d id you pull the lower cowling pan. *I need to get to my steering arm to clean and paint.

There are 4 bolts holding the 2 pieces together, 2 in the back inside the cowling, one in the front inside and one in the front outside, right near the pivot point. I had to remove the airbox to get the front inside one out, the rest were no prob. The it is a rasslin (wrestling for you yanks) match to pull the covers off of the rubber mounts, for each side pull straight towards the sides of the boat

randlemanboater 02-23-2007 10:25 AM
Re: Poppet valve '99 Merc 150
 
Quote:
Originally Posted by Blue_Runner
I don't know what they look like either but I found this

Poppet Valve Kit for Mercury:
http://www.colortomorrow.com/obimages/8030.jpg
HHHHMMMMM, looks like I will be opening that back up cause I didnt find all that stuff.

randlemanboater 02-23-2007 10:25 AM
Re: Poppet valve '99 Merc 150
 
Quote:
Originally Posted by Blue_Runner
I don't know what they look like either but I found this

Poppet Valve Kit for Mercury:
http://www.colortomorrow.com/obimages/8030.jpg
HHHHMMMMM, looks like I will be opening that back up cause I didnt find all that stuff.

Airslot 02-23-2007 11:08 AM
Re: Poppet valve '99 Merc 150
 
Randleman, It looks to me like a hack may have gotten ahold of your motor in its previous life. Your t-stats have been hollowed out and your poppet valve has been removed. I think they were chasing cooling issues before you got ahold of it.

JMO

Airslot

Airslot 02-23-2007 11:08 AM
Re: Poppet valve '99 Merc 150
 
Randleman, It looks to me like a hack may have gotten ahold of your motor in its previous life. Your t-stats have been hollowed out and your poppet valve has been removed. I think they were chasing cooling issues before you got ahold of it.

JMO

Airslot

msbhammer 02-23-2007 11:27 AM
Re: Poppet valve '99 Merc 150
 
Ok, what does the poppet valve do. I know it has to do with cooling, but does it regulate the amount of water through the heads ????

msbhammer 02-23-2007 11:27 AM
Re: Poppet valve '99 Merc 150
 
Ok, what does the poppet valve do. I know it has to do with cooling, but does it regulate the amount of water through the heads ????

randlemanboater 02-23-2007 11:51 AM
Re: Poppet valve '99 Merc 150
 
Mine doesnt do anything.

Its supposed to open up to allow more waterflow through the motor above 2500 rpm.

randlemanboater 02-23-2007 11:51 AM
Re: Poppet valve '99 Merc 150
 
Mine doesnt do anything.

Its supposed to open up to allow more waterflow through the motor above 2500 rpm.

randlemanboater 02-23-2007 11:52 AM
Re: Poppet valve '99 Merc 150
 
Quote:
Originally Posted by Airslot
Randleman, It looks to me like a hack may have gotten ahold of your motor in its previous life. *Your t-stats have been hollowed out and your poppet valve has been removed. *I think they were chasing cooling issues before you got ahold of it.

JMO

Airslot
I agree Air. I hope I fixed it.

randlemanboater 02-23-2007 11:52 AM
Re: Poppet valve '99 Merc 150
 
Quote:
Originally Posted by Airslot
Randleman, It looks to me like a hack may have gotten ahold of your motor in its previous life. *Your t-stats have been hollowed out and your poppet valve has been removed. *I think they were chasing cooling issues before you got ahold of it.

JMO

Airslot
I agree Air. I hope I fixed it.

macojoe 02-23-2007 12:27 PM
Re: Poppet valve '99 Merc 150
 
Sorry but I have never had to deal with one so I have no idea??

This is a Skool or BS question :-/

macojoe 02-23-2007 12:27 PM
Re: Poppet valve '99 Merc 150
 
Sorry but I have never had to deal with one so I have no idea??

This is a Skool or BS question :-/

randlemanboater 02-23-2007 01:03 PM
Re: Poppet valve '99 Merc 150
 
Looking back @ my pics, I think I just didn't pull the rest of the valve out of the side of the block (looking at the right side of the housing).

randlemanboater 02-23-2007 01:03 PM
Re: Poppet valve '99 Merc 150
 
Looking back @ my pics, I think I just didn't pull the rest of the valve out of the side of the block (looking at the right side of the housing).

Airslot 02-23-2007 02:21 PM
Re: Poppet valve '99 Merc 150
 
After looking at the pics, I agree, the rest of the valve is still in there. I'd pull it to check for sand, etc.

I'd also put T-stats back in . You can pick them up for about 30 for the pair

Airslot 02-23-2007 02:21 PM
Re: Poppet valve '99 Merc 150
 
After looking at the pics, I agree, the rest of the valve is still in there. I'd pull it to check for sand, etc.

I'd also put T-stats back in . You can pick them up for about 30 for the pair

phatdaddy 02-23-2007 10:14 PM
Re: Poppet valve '99 Merc 150
 
RMB, Don't confuse me with the northern members of the tribe, I am well aquainted with boiled peanuts & pot likker.

My steering arm is very corroded and I need to pull the pan to get to it.

Thanks

phatdaddy 02-23-2007 10:14 PM
Re: Poppet valve '99 Merc 150
 
RMB, Don't confuse me with the northern members of the tribe, I am well aquainted with boiled peanuts & pot likker.

My steering arm is very corroded and I need to pull the pan to get to it.

Thanks

randlemanboater 02-24-2007 01:42 AM
Re: Poppet valve '99 Merc 150
 
MMMMMMMMMMMMMMMMMMMMMM boiled peanut season is just around the corner!!!!!!!! ;D

As you can see, my steering arm is in bad shape as well, hope it is easy to replace. But that will be another thread.

randlemanboater 02-24-2007 01:42 AM
Re: Poppet valve '99 Merc 150
 
MMMMMMMMMMMMMMMMMMMMMM boiled peanut season is just around the corner!!!!!!!! ;D

As you can see, my steering arm is in bad shape as well, hope it is easy to replace. But that will be another thread.


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