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Post by ibmike on Mar 13, 2023 7:55:52 GMT -5
Update on the saw from Hell.Checked all my parts, cleaned everything, put it back together and still can't pull the starter rope. Tried both starters on both saws, they start saw #1, but will not pull on saw #2, so its not the starter pulleys.The resistance with the spark plug out of #2 is very near the same pull resistance as #1 with the spark plug in.I may need to tear the engine apart to see whats up. Iam not an engine builder so it could end up being a box of parts. I do have one very nice 330 , and I just bought #2 for the bar anyway. At this point its become a curiosity to find out whats causing this problem.
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Post by bobby167 on Mar 13, 2023 10:49:15 GMT -5
Suggestion. It might sound crazy,but.Remove starter.With plug out,turn engine & check for resistance while turning engine. See If it's the same all the way. It's normal to feel some at the top of the stroke, but not both ways.If not, take a rubber or brass hammer and gently tap the end of the crank. Try to turn it again and see if it is better. Might have to do it several times.Too much pressure on cyl from rings could be a problem.When you put fuel into carb / spark plug hole it lubes cyl, making it easy to pull. I have run across this before, on some saws. The only other thing, but probably not, is the reed valve sticking, with plug in.
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Post by ibmike on Mar 14, 2023 7:04:40 GMT -5
Hi Bobby, never done that, but I'll give it a try when I get a chance. I'am up for anything at this point.Like I mentioned before I bought the saw for the bar, paid 20 in a case ,sold the case for 20. Bought the boot, carb kit, and gaskets.Saw #1 runs so good I would like to get this one going.Thanks for the idea.
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Post by bobby167 on Mar 14, 2023 7:36:25 GMT -5
Hope it works for you. I have done it on some saws. The only other thing that I can think of is the boot was torn & started to run lean, by the previous owner.That is what happens when someone brings one in for repair or buy one from auction.They will not tell us whole story.
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Post by ibmike on Mar 14, 2023 7:46:36 GMT -5
I took it down to the reed valve Sunday, checked it out and everything looked good. what would I look for in bad reed valve ?
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Post by ibmike on Mar 14, 2023 7:58:01 GMT -5
After asking the question about the reed valve, I remember it was in the same condition as saw#1.
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Post by ibmike on Mar 15, 2023 5:55:43 GMT -5
Bobby, I tried your suggestion and its spines freely.No drag on the piston. Iam stumped again
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Post by blythkd on Mar 15, 2023 6:52:23 GMT -5
Can you literally not crank it at all or it just hard to get it to turn over?
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Post by ibmike on Mar 16, 2023 7:38:27 GMT -5
Hi Billy, can't crank it over at all.try pulling it and just fells like it hung up, but its not. Both pulleys have new rope and both work great on 330#1.When I put the spark plug back in without the coil on it has a lot of resistance, turning by hand.I have a old compression tester, with the rubber plug type end, haven't tried it, maybe I should , but I can't believe it would have that much compression.Cylinder looks good, very little if any scoring on the piston.
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Post by ibmike on Mar 16, 2023 8:02:25 GMT -5
Back in early February when I first did the intake boot it wouldn't start, so I poured some fuel in the tank and into the carburetor, and the first couple of pulls were hard but released and started, seemed to run alright for several minutes than died. Hasn't run since.
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Post by blythkd on Mar 16, 2023 9:48:36 GMT -5
Yeah any of them in good condition are tough to crank but not impossible. This is starting to become a real stumper.
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Post by ibmike on Mar 17, 2023 7:52:31 GMT -5
Hi Billy, yes they are harder to pull them some saws, but my 1st one never gave me any issues starting it.So yesterday I put #2 back together , started pulling and the same thing, I pulled very slow several times and the rope pulled all the way, still jerking like hanging up, but got better and better and it started pulling good. gassed it up and it STARTED .I let it run for several minutes shut it down.Did not touch it after that, i will try to start it today fingers crossed.I have no glue as to what was happening, but it was hanging up for lack of a better term.I had this same issue with an old Mac ten years ago, its still sitting in a box in the garage.I thank all you Guys for your great advice.So if it starts today my donor saw becomes a complete running saw.Happy St Pattys day to all
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Post by blythkd on Mar 17, 2023 12:36:11 GMT -5
Sounds a bit like hydrolocking but you said you'd had the spark plug out, right? And cranked it briskly while the plug was out?
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Post by ibmike on Mar 18, 2023 7:44:03 GMT -5
Yes,i had it all the way down to the engine and frame only, spun freely no hangup.I just have no idea what caused it can't explain it, if anyone out there has opinions or thoughts I would love to here them.Yesterday it started right up again, now I need to watch Leon's video on priming the oil pump again.
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Post by ibmike on Mar 19, 2023 7:49:21 GMT -5
Here we go again, watched Leon's video on priming the oil pump on 330#2 ( great help Leon thank you ) removed it, cleaned everything, blew air threw the oil line to the chain, than pumped some oil till it ran out, put a drop in the diaphragm hole , and reinstalled it.The saw won't pull, broke the rope again.Took it all the way down thinking the coil may have moved, it didn't. New rope on the pulley back together with all new lines and won't pull.Put the starter with the new rope on 330#1, fired up in couple pulls.Something is locking this saw up what I don't know
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Post by blythkd on Mar 19, 2023 8:43:08 GMT -5
Have you pulled the spark plug out, stood it up on it's tail with the spark plug hole pointing straight down and cranked it pretty good a few times to see if it blows any oil or gas out? If it worked ok for a while but now it's back to cranking hard, it doesn't sound like anything catastrophic internally. Sounds more like hydrolocking to me all the time if it's coming and going.
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Post by ibmike on Mar 19, 2023 8:52:14 GMT -5
Thanks Billy, I will try that, I will try anything at this point. The saw runs good when it runs, so yes the motor is ok. But Iam running out of patience and rope.
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Post by ibmike on Mar 20, 2023 7:55:43 GMT -5
I pulled the plug, stood it on its handle up right and pulled the starter, did have a little bit of fuel mist, that seems normal to me.Again this is a mystery, pulled on it it all though the day and it kept hanging up.It has to be some kind of vapor lock, but whats causing it?
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Post by blythkd on Mar 20, 2023 11:13:25 GMT -5
Did you put the plug right back in and try to crank it normally again?
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Post by ibmike on Mar 21, 2023 7:30:08 GMT -5
I did, same result, is it possible to have inconsistent firing from a coil, in a instance like that it wouldn't burn off the fuel maybe ? Thanks for all the help and ideas.
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