365 husky tar coated piston and cylinder
- Thread starter baotman
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StihlyinEly
Addicted to ArboristSite
Welcome to AS! Get some pics of the piston and jug and post them here. Makes me wonder if it's not a lot of buildup from mix oil.
parrisw
Tree Freak
Are you using crude oil as fuel?
He could be using outboard motor oil, which can leave a sludge. Also, certain types of old dirtbike mix with Castor oil in it will leave heavy build-up.
parrisw
Tree Freak
Possible. TCWIII is meant for water cooled, so ya not supposed to use it in air cooled engines.
I find any Dino mix will get carbon build up more then synthetic mix.
tree monkey
Addicted to ArboristSite
its called coking, and is caused from old fuel that burns too slow/cold
parrisw
Tree Freak
He did say, he used fresh gas, so I'm curious to hear what he has to say. I'd like to hear the saw run, to see what state of tune its in.
Without pics.......who knows!
Symptoms, tar coated.........oh sounds familiar......TCW3!
Sticky, tar coated.....mixing fuel/oil in a pop bottle!
See alot of stuff.
Symptoms, tar coated.........oh sounds familiar......TCW3!
Sticky, tar coated.....mixing fuel/oil in a pop bottle!
See alot of stuff.
tree monkey
Addicted to ArboristSite
jred oil used to say it met the tcw3 standerd
parrisw
Tree Freak
Ya, mixing fuel in the wrong kind of plastic bottle is bad, can react with the fuel, and you get that crap mixed in.
parrisw
Tree Freak
Really eh? Strange.
komatsuvarna
Arboristsite MVP
I've seen several people around here use 1 gallon Milk jugs for Gas jugs lol. I just shake my head.....
parrisw
Tree Freak
LOL, ha ha ha. I work at a service station that sells gas, we had a guy come in and fill up a Styrofoam cup with gas for his lawnmower, LOL, he didn't get very far before the gas ate through the cup!!!!!!!
Using oil meant for higher rpm/temperatures in a lower rpm/temperature environment (chainsaw oil in an outboard) has little to no effect. The other way around it does. Under heavy duty conditon tcw3 breaks down and deposits for rapidly.........how much heavy duty do you need than a chainsaw running 13000rpm...............my Mercury and my Lawn Boy never did that. If they did I'd have a hard time fishings, but then again my lawn would be cut faster.
tree monkey
Addicted to ArboristSite
i could be wrong but i don't think rpm's has anything to do with it.
parrisw
Tree Freak
Your probably right, I think its more a heat thing. Hence air cooled, liquid cooled. 2 stroke outboards carbon up easier.
365 piston cylinder tar coated
Hi parrisw
In reply to your question no I do not use crude oil for my mix. I was uesing stihl brand two cycle mix at 40:1 in my husky I know with out pictures its hard to guess what the piston looks like .I will try to describe it as best I can .The piston is charcoal black its sticky tar like substance even acetone has very little affect on it. Brake parts cleaner good luck, gumout carb and choke cleaner just a little bit .Im down to useing liquid wrench and steel wool fine grade to get the tar like stuff so here I go thanks baotman:msp_unsure:
Hi parrisw
In reply to your question no I do not use crude oil for my mix. I was uesing stihl brand two cycle mix at 40:1 in my husky I know with out pictures its hard to guess what the piston looks like .I will try to describe it as best I can .The piston is charcoal black its sticky tar like substance even acetone has very little affect on it. Brake parts cleaner good luck, gumout carb and choke cleaner just a little bit .Im down to useing liquid wrench and steel wool fine grade to get the tar like stuff so here I go thanks baotman:msp_unsure:
parrisw
Tree Freak
I was kidding. All jokes aside though. I've had many saws apart and never seen it sticky black on the piston. How do you run you're saw? Full out? or part throttle.
ncfarmboy
Addicted to ArboristSite
Orange or white bottle Stihl oil? I've heard of not seen problems with one of them carboning up real bad. I would try some laquer thinner and a putty knife.
Shep
Shep
