Question about a 4 wheeler 2 stroke motor... related to a thread i posted 2 months ago
Ok here is the original thread https://honda-tech.com/zerothread?id=1398532
Well I got around to tinkering with the 4 wheeler today since i have been busy with school and the weather has not been great to be outside ripping it apart and i took the reeds off and i do not exacly know what i am looking for?? I also was taking a closer look at things and it looks as if where the cylinder head attaches to the bottom half of the motor there was a bolt loose.....It looks like there the head gasket is, could this have caused it not to run? I put a picture of that also to see if you guys can help me out. It also looked like the reed case gasket was pretty f'ed up would that also cause any problems? Basically with the reed pics im wondering do they look bad? Is there something I can check to see if they are bad?
Pictures.


Well I got around to tinkering with the 4 wheeler today since i have been busy with school and the weather has not been great to be outside ripping it apart and i took the reeds off and i do not exacly know what i am looking for?? I also was taking a closer look at things and it looks as if where the cylinder head attaches to the bottom half of the motor there was a bolt loose.....It looks like there the head gasket is, could this have caused it not to run? I put a picture of that also to see if you guys can help me out. It also looked like the reed case gasket was pretty f'ed up would that also cause any problems? Basically with the reed pics im wondering do they look bad? Is there something I can check to see if they are bad?
Pictures.


1. You are getting spark right. you held the spark plug up to the cylinder and kicked it and you saw spark?
2. I think you need a new reed block
3. are you trying to start it with out the exhaust on. 2 strokes have this thing about back pressure. It might not start without that pipe. I would tighten that nut. also have someone kick it over and see if the is air coming out.
2. I think you need a new reed block
3. are you trying to start it with out the exhaust on. 2 strokes have this thing about back pressure. It might not start without that pipe. I would tighten that nut. also have someone kick it over and see if the is air coming out.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kulrevon »</TD></TR><TR><TD CLASS="quote">1. You are getting spark right. you held the spark plug up to the cylinder and kicked it and you saw spark?
2. I think you need a new reed block
3. are you trying to start it with out the exhaust on. 2 strokes have this thing about back pressure. It might not start without that pipe. I would tighten that nut. also have someone kick it over and see if the is air coming out.
</TD></TR></TABLE>
1) yes, sorry i should have briefed everyone on the thread before, I was getting spark but I thought something was wrong on the carb so I took another blaster carb and attached it and had nothing going. I then wanted to make sure that was the problem and sprayed gasoline from a spray bottle directly into the motor and the 4 wheeler would turn over but would not stay started since there was no constant gas supply. I then cleaned the carb again and it did not work so i rebuilt it and it still didnt work, thats when HT suggested that the reeds may be bad. In return i did check for spark and i have it.
2) Why do you think this, I'm curious to know. (also do I need just reeds or everything.
3) the exhaust was taken off afterwards because i plan on ordering a new gasket set and pulling the cyl. head and replacing the headgasket to make sure it sits right once i tighten that bolt back up.
2. I think you need a new reed block
3. are you trying to start it with out the exhaust on. 2 strokes have this thing about back pressure. It might not start without that pipe. I would tighten that nut. also have someone kick it over and see if the is air coming out.
</TD></TR></TABLE>
1) yes, sorry i should have briefed everyone on the thread before, I was getting spark but I thought something was wrong on the carb so I took another blaster carb and attached it and had nothing going. I then wanted to make sure that was the problem and sprayed gasoline from a spray bottle directly into the motor and the 4 wheeler would turn over but would not stay started since there was no constant gas supply. I then cleaned the carb again and it did not work so i rebuilt it and it still didnt work, thats when HT suggested that the reeds may be bad. In return i did check for spark and i have it.
2) Why do you think this, I'm curious to know. (also do I need just reeds or everything.
3) the exhaust was taken off afterwards because i plan on ordering a new gasket set and pulling the cyl. head and replacing the headgasket to make sure it sits right once i tighten that bolt back up.
your looking for worn surfaces, and more likely splits in the reeds. Not being familiar with your engine I dont think I can tell you from afar that those reeds are bad, if they had splits then that would be simple. reeds do loose resiliency over time, so take that with a grain of salt. with the reeds shown, I dont really see anything wrong. How hard would it be for you to pull the clyinders? if this is a high millage engine you may need new rings. is this a premix engine or oil injection? if it is premix make sure your mix is correct and if it has an oil pump, keep an eye on your plugs, I have seen plugs foul in a mater of minutes... perhaps even less
Hey man those reeds a shot they should look like this ill post a pic they should be tight. When reeds get old they start to get sloopy and so forth
Another thing take the exhaust off the motor and look up the exhauts port and if the side of the piston are scrached bad u need some work. Like i said look up there and see how the top of the cylinder head and pistons are.
2 strokes rely soly on compresion and good seal to run. Any more questions ask away
Another thing take the exhaust off the motor and look up the exhauts port and if the side of the piston are scrached bad u need some work. Like i said look up there and see how the top of the cylinder head and pistons are.
2 strokes rely soly on compresion and good seal to run. Any more questions ask away
reeds do look a little weak, also before you spend lots of money on replacing parts you should do a vacuum test on the motor. if you don't have tools or knowledge to do this test don't worry, most people do not. if motor can be removed from frame with ease you should be able to bring it to a local power sports dealer, to test it. check with them before you bring it in just in case. this will tell you what is wrong with it.
Trending Topics
Not sure what you guys see to say the reeds are bad. They would have to be cracking or broken to be "bad" and they look fine to me. Just old. I seriously doubt that is why it doesn't run.
Unhook the gas line coming from the tank and turn on the valve just to make sure gas is coming out. My buddy has a clogged breather hose on his old bike that wasn't allowing gas to flow.
Just the fact that you can get it to fire on starting fluid and then it dies is making me think it's just not getting gas.
Just the fact that you can get it to fire on starting fluid and then it dies is making me think it's just not getting gas.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Z »</TD></TR><TR><TD CLASS="quote">Unhook the gas line coming from the tank and turn on the valve just to make sure gas is coming out. My buddy has a clogged breather hose on his old bike that wasn't allowing gas to flow.
Just the fact that you can get it to fire on starting fluid and then it dies is making me think it's just not getting gas. </TD></TR></TABLE>
yeah i know, i checked and gas comes out... I guess i will rebuild the carb again to see if new parts help....That's why i thought the reeds but im not entirely sure what the "reeds" do.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMCRX »</TD></TR><TR><TD CLASS="quote">Hey man those reeds a shot they should look like this ill post a pic they should be tight. When reeds get old they start to get sloopy and so forth
Another thing take the exhaust off the motor and look up the exhauts port and if the side of the piston are scrached bad u need some work. Like i said look up there and see how the top of the cylinder head and pistons are.
2 strokes rely soly on compresion and good seal to run. Any more questions ask away</TD></TR></TABLE>
well thats why i thought that bolt but what elts will cause it only to start when i spray gas straight into the reed cage?
Just the fact that you can get it to fire on starting fluid and then it dies is making me think it's just not getting gas. </TD></TR></TABLE>
yeah i know, i checked and gas comes out... I guess i will rebuild the carb again to see if new parts help....That's why i thought the reeds but im not entirely sure what the "reeds" do.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMCRX »</TD></TR><TR><TD CLASS="quote">Hey man those reeds a shot they should look like this ill post a pic they should be tight. When reeds get old they start to get sloopy and so forth
Another thing take the exhaust off the motor and look up the exhauts port and if the side of the piston are scrached bad u need some work. Like i said look up there and see how the top of the cylinder head and pistons are.
2 strokes rely soly on compresion and good seal to run. Any more questions ask away</TD></TR></TABLE>
well thats why i thought that bolt but what elts will cause it only to start when i spray gas straight into the reed cage?
Thread
Thread Starter
Forum
Replies
Last Post
natedizzle
All Motor / Naturally Aspirated
10
May 11, 2011 04:05 PM
boomersz
Honda Civic / Del Sol (1992 - 2000)
13
Feb 5, 2007 07:22 PM




