Freudianfloyd
Clinically Diagnosed with CAD
I took the crankcase off and closed off the exhaust and spark plug hole and put a little shop air through the intake and watched oil blow out the side of the crankcase.
I'm Going To Throw This @#$%#$% 211 in the Pond!!!
- Thread starter Freudianfloyd
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I took the crankcase off and closed off the exhaust and spark plug hole and put a little shop air through the intake and watched oil blow out the side of the crankcase.
Just remember no mor thAn 10 psi on the crank case
Freudianfloyd
Clinically Diagnosed with CAD
Yeah, I know not to use much, i barely got any in it before it sprayed oil. The intake was only covered with my thumb and the large port on top was only partially blocked.
Freudianfloyd
Clinically Diagnosed with CAD
Either way, the seals were obviously bad, they had big gouges in the sides of them.
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Well, on the bright side, you can swap the carbs back and have an AM spare now.
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Here is some real bad ones!!!
Freudianfloyd
Clinically Diagnosed with CAD
That's true.
I did notice some slight scoring on the piston skirt, but the rings were not stuck, and the cylinder is still smooth. The scoring also doesnt go all the way to the ring grooves, just on the lower portion.
Freudianfloyd
Clinically Diagnosed with CAD
This saw can burn in hell!!! I have gone through everything on it and it will not start! I took it down to the bare cylinder, I put new seals in it, put new motoseal on the clamshell, clamped it back together and let it setup overnight, checked every hose, every filter, new spark plug, it's getting compression, the rings looked good, it had some minor score marks below the rings, I lightly smoothed those out. I honed the cylinder slightly to remove some scratches that were very shallow, and put the entire POS back together.
Put fresh gas in it, put the choke on and it hit on 3 pulls. Switched the fast idle, and nothing, switched to run, pulled several times, nothing.
Took the plug out and dried it off. Dried out the cylinder, put it back together, hit on choke, and then nothing.
Finally got it to run while holding the throttle down when starting, but it wouldn't run very well, and if I let off the throttle at all it would die. It also smoked quite a bit.
Took it apart again, checked the metering lever in the carb, and adjusted it. Took the muffler off and could easily blow air through it. Cleaned the spark plug again, blew out the cylinder, reinstalled plug, triple checked the H and L adjustments. They are set to 1 turn out.
Tried again, hits on choke, will not do anything else. It ran better before I fixed it, yes I'm aware that I obviously didnt fix it!
So my next course of action since I dont have a #%%&#%#&*%^@ pressure tester is to take it back apart and try to reseal the pos.
This saw isnt worth this much effort!
Put fresh gas in it, put the choke on and it hit on 3 pulls. Switched the fast idle, and nothing, switched to run, pulled several times, nothing.
Took the plug out and dried it off. Dried out the cylinder, put it back together, hit on choke, and then nothing.
Finally got it to run while holding the throttle down when starting, but it wouldn't run very well, and if I let off the throttle at all it would die. It also smoked quite a bit.
Took it apart again, checked the metering lever in the carb, and adjusted it. Took the muffler off and could easily blow air through it. Cleaned the spark plug again, blew out the cylinder, reinstalled plug, triple checked the H and L adjustments. They are set to 1 turn out.
Tried again, hits on choke, will not do anything else. It ran better before I fixed it, yes I'm aware that I obviously didnt fix it!
So my next course of action since I dont have a #%%&#%#&*%^@ pressure tester is to take it back apart and try to reseal the pos.
This saw isnt worth this much effort!
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So give it to someone that can fix it.
Be rid of your problem and buy yourself another kit saw of small CC's that can keep you entertained.
Be rid of your problem and buy yourself another kit saw of small CC's that can keep you entertained.
Freudianfloyd
Clinically Diagnosed with CAD
That would be the smart thing to do, but then what would I have to complain about on here?
No I am determined to get it running, I just needed to vent.
I noticed, the primer bulb does not want to fill with gas, and I can hear air everytime I pump it, and the tank seems to fill with pressure. Is this an obvious sign to anybody? I can see through the top in the carb, and the diaphram doesnt move ever pump, could it be another clue?
stilh036prohog
ArboristSite Guru
Did y try a new muffler. Trust me,if you did and still won't run shoot it and then throw it in pound. They suck.
Yeah could be a clogged spark arrestor it can be easy to overlook
Brent Adams
ArboristSite Operative
Hmmm, seems lile I recall something like whats going on with you now. I got the lines to the primer and the line to tje carb mixed up. I take lots of pictures now.
By chance would you have an IPL or service manual to get the line routing corrected? That and possibly a muffler May be all that stands in your way. Oh, and a spark plug. Had several that showed spark and would pop, even run for a second, but short under any heat and compression. NGK plug is about 4 bucks at my local dealer. Much cheaper than the extra alcohol I must consume to "depressurize" after a round with a problem they sometimes cause....
By chance would you have an IPL or service manual to get the line routing corrected? That and possibly a muffler May be all that stands in your way. Oh, and a spark plug. Had several that showed spark and would pop, even run for a second, but short under any heat and compression. NGK plug is about 4 bucks at my local dealer. Much cheaper than the extra alcohol I must consume to "depressurize" after a round with a problem they sometimes cause....
Van462
ArboristSite Member
Normally the Carb is directly feed from the tank. The primer is on the return to tank side of the carb. The primer pulls a vacuum and draws fuel into the carb, once its full the remaining fuel enters the primer bulb and is pushed back to the tank. If its not filling either its backwards or the carb fuel path is blocked. A cracked fuel line will also allow air in easier than drawing fuel. You can test the bulb by placing the inlet side into a small container of fuel and watch it pump thru.
stilh036prohog
ArboristSite Guru
Muffler is clog no air won't make it right
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Simplify it- it takes fuel, spark and compression to make a chainsaw run. Seems you have spark, you say compression is okay- so that leaves fuel.
Now seeing as how you mention the primer bulb issues- my best guess is you have fuel issues.
As others have stated above- incorrect hose connections, or out of sequence- faulty fuel lines, carb issues, blocked lines or filters.
Now, start eliminating until you find your problem.
Now seeing as how you mention the primer bulb issues- my best guess is you have fuel issues.
As others have stated above- incorrect hose connections, or out of sequence- faulty fuel lines, carb issues, blocked lines or filters.
Now, start eliminating until you find your problem.
Freudianfloyd
Clinically Diagnosed with CAD
Well......this is what I tried this round.
Removed muffler....and it started! For a few seconds and wouldn't restart.
New plug, no change
Removed kill wire, it has a bare spot in the insulation.....it starts and runs at full throttle.
Put muffler back on....no change.
New fuel lines from carb to primer bulb and from bulb to tank....no change.
Take carb back apart. Pit in different diaphram....put back together.....primer bulb fills with fuel. Success.....or not.
Saw will idle at extreme rpm and when any adjustment is made to the idle screw, it dies immediately. H and L are set to what the manual says...
Try this several times, it will start regularly now, but either wont stay running without me giving it gas, or the idle screw has to be all the way in.
Try feathering the throttle to let off of it and adjust the L side to richen it a bit, rpms come down, but no throttle response.
Get the idle and L in sync where the chain stops spinning and it has throttle response, give it a bump on the throttle and it takes off climbing higher and higher in rpms even after letting off the trigger. Adjust the idle again, and instant death.
It makes no sense. It acts like it is sucking air, but I have no idea how, the only line that wasnt changed is the line from the tank to the carb, but it hold pressure so I dont believe that is the issue, and the impulse line is not a regular line, and I thoroughly checked it and cant find any holes or cracks.
Should I try spraying ether or something else around parts of the saw and see if it surges?
And incase I haven't said it yet, thank you guys for the help. I tinker on this stuff to relax, but this saw has me throwing screwdrivers and cussing out the wind.
Removed muffler....and it started! For a few seconds and wouldn't restart.
New plug, no change
Removed kill wire, it has a bare spot in the insulation.....it starts and runs at full throttle.
Put muffler back on....no change.
New fuel lines from carb to primer bulb and from bulb to tank....no change.
Take carb back apart. Pit in different diaphram....put back together.....primer bulb fills with fuel. Success.....or not.
Saw will idle at extreme rpm and when any adjustment is made to the idle screw, it dies immediately. H and L are set to what the manual says...
Try this several times, it will start regularly now, but either wont stay running without me giving it gas, or the idle screw has to be all the way in.
Try feathering the throttle to let off of it and adjust the L side to richen it a bit, rpms come down, but no throttle response.
Get the idle and L in sync where the chain stops spinning and it has throttle response, give it a bump on the throttle and it takes off climbing higher and higher in rpms even after letting off the trigger. Adjust the idle again, and instant death.
It makes no sense. It acts like it is sucking air, but I have no idea how, the only line that wasnt changed is the line from the tank to the carb, but it hold pressure so I dont believe that is the issue, and the impulse line is not a regular line, and I thoroughly checked it and cant find any holes or cracks.
Should I try spraying ether or something else around parts of the saw and see if it surges?
And incase I haven't said it yet, thank you guys for the help. I tinker on this stuff to relax, but this saw has me throwing screwdrivers and cussing out the wind.
Huskybill
Addicted to ArboristSite
He’s so good she’s sleeping, am I hurting you baby?
My next step would be to buy a Mityvac 8500 and do a pressure test
