Why no gas to carb? MS260
- Thread starter roccus
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Those, generally, are pretty clean.......
SteveSr
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@HarleyT and @Bedford T go read the saw history post several pages back. There are plenty of clues in there... like sawdust in the carburetor!
@roccus please read my response. Based on this information I think I have figured out the issue with the parts saw. THe runner may have similar issues.
@roccus please read my response. Based on this information I think I have figured out the issue with the parts saw. THe runner may have similar issues.
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Yeah, reading all of that has me questioning the meaning of life, I think he needs to fix one saw at a time. I was thinking that we were talking about the saw that he started the thread about, but now, I am not sure of anything....
Why not throw in some more saws?
Why not throw in some more saws?
Let him read this after he puts gas in it. Harley may enjoy the read too!
Fuel, Air, Compression, Timing, Spark - You need to work on each one of those items and try to eliminate each possibility during the troubleshooting process, and Not necessarily in any specific order, like making sure you are truly getting fuel into the engine, any of the "FACTS" will stop an engine from starting. An often missed problem is an engine air leak, If you have bad engine seals, or cylinder gasket/ sealant leak, or carburetor mounting leak, or de-compression valve leak. This is an often missed problem, and will even stump the pro's. The engine has to be completely air tight with good compression when you have that condition, the engine will pull air thru the carburetors venturi, pick up the fuel on its way thru, and then the proper air and fuel will result in combustion of the fuel when the spark fires. Without the correct amount of air, you may either get very little fuel into the engine, and it won't start, or too much fuel into the engine, and the engine will flood, and it won't start. All of those symptoms will almost certainly seem like you don't have enough ignition, and that it must be an electrical problem but that is not the case.
Fuel, Air, Compression, Timing, Spark - You need to work on each one of those items and try to eliminate each possibility during the troubleshooting process, and Not necessarily in any specific order, like making sure you are truly getting fuel into the engine, any of the "FACTS" will stop an engine from starting. An often missed problem is an engine air leak, If you have bad engine seals, or cylinder gasket/ sealant leak, or carburetor mounting leak, or de-compression valve leak. This is an often missed problem, and will even stump the pro's. The engine has to be completely air tight with good compression when you have that condition, the engine will pull air thru the carburetors venturi, pick up the fuel on its way thru, and then the proper air and fuel will result in combustion of the fuel when the spark fires. Without the correct amount of air, you may either get very little fuel into the engine, and it won't start, or too much fuel into the engine, and the engine will flood, and it won't start. All of those symptoms will almost certainly seem like you don't have enough ignition, and that it must be an electrical problem but that is not the case.
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Nawww, a squirt of fuel is the first simple test....
If you want to diagnose a saw quickly....
A saw with blown seals, and no carb, will fire up and die with a shot of fuel, if it has compression and spark [at the right time ].
If you want to diagnose a saw quickly....
A saw with blown seals, and no carb, will fire up and die with a shot of fuel, if it has compression and spark [at the right time ].
Ever get that 066 kit sorted out?
What you all thingk of this pump are they ok??
http://www.ebay.com/itm/2-CYCLE-PRE...410630?hash=item2106d2fa06:g:3dcAAOSwbdpWZ6Jm
Then there is this one but it's $25 more... not sure if it's worth it may only need to use this tool a couple times
http://www.ebay.com/itm/2-Stroke-Pr...518832?hash=item542f3904f0:g:DSUAAOSwiYFXGsrU
http://www.ebay.com/itm/2-CYCLE-PRE...410630?hash=item2106d2fa06:g:3dcAAOSwbdpWZ6Jm
Then there is this one but it's $25 more... not sure if it's worth it may only need to use this tool a couple times
http://www.ebay.com/itm/2-Stroke-Pr...518832?hash=item542f3904f0:g:DSUAAOSwiYFXGsrU
lol I am working on the saw this post was started on I had just mentioned the other one when asked history of this saw... I have a lot to go on here and want to thank everyone for input I think the problem will be found here I put a post above about a vacuum pump looks like I need one and it could come in handy if I ever have to go into my sled motor... again thanks so much for all your time and input I really appreciate it
Was just reading one of the posts from Bedford.... "de-compression valve leak" I don't understand this one trying to start this saw I have the valve pushed in I thought that is what it is for to make it easier to start.... I should have this closed for it to get gas into the carb?? Or did he mean once the saw starts it should be fully sealed when closed?
SteveSr
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Right idea but I have never seen this one. More expensive than the generic Mity-vac.
This IS the Mity-vac with some packaged accessories and is WAY overpriced... Almost double what I paid for the generic pump kit.
All you need is the generic mity-vac pump kit, spark plug adapter with o-ring, and rubber or home made intake and exhaust blocking plates. The rubber strips work good on the muffler but not so good on the intake due to confined space.
Start looking for threads on this board on on pressure/vacuum testing methods and adapters. You jumped into the swamp with both feet and it will take some time and effort to pull yourself out and get cleaned up!
If this saw won't hit with fuel squirted in the carb, then you have bigger issues than just an air leak or a carb problem.
Was just looking at that one.. does it have a spark plug adapter?
