Bad gas? Weird running issues.

[Welderman85]

Hello I im having a issue I can't seem to figure out. I had a little homelite xl I fixed for the neighbor. New fuel lines a. Little tuning ran good. Then I let it sit a few days and topped off the gas and it started bogging and would die like it ran out of gas. So I ordered a carb kit. Yesterday I had a poulan 5020 I was selling I had just used it 3 days ago and it ran fine. So I topped it off with gas for the guy and it started to run just like the homelite. Hard to start and didn't want to rev out. Now today I had a pp4218 that I was getting ready to sell it ran great 2 days I filled thentank and now the same thing. This gas I used is 87 because the rec fuel pump was down. And vp oil 40 to 1. At first I thought it was a carb issues but adjusting the carb had little affect on it. It would run then bog and stall and now that 3 saws are having them same issues. I wonder if it could be the gas

 

[OM617YOTA]

Yes absolutely faulty fuel could be it, especially if it's ethanol fuel over a couple months old.

 

[cookies]

Dump it all out and go get fresh gas from a different station and try it again, rapid temperature changes ruin fuel.

 

[sundance]

Yes absolutely faulty fuel could be it, especially if it's ethanol fuel over a couple months old.

Logic says the fuel. Also the easiest thing to eliminate. Make sure you dump the tanks, refill with fresh fuel and run long enough to be sure the fresh fuel is running the saws.

 

[Welderman85]

I had the the fuel for a 3 weeks or so. It seem to run ok in a ms180 I did a carb swap on but I didn't run it much. Then the little xl I just figured carb issues but when it got to 3 saws all the same I knew something was up

 

[holeycow]

Shake your gas can. Pour some in a clear glass jar and then observe for debris in the fuel. Let it settle, and look again. Sounds like plugged jets from dirty fuel. It happens.

You could look into the bottom of your gas can too...

 

[Vintage Engine Repairs]

So glad we don’t have ethanol fuel over here. As others have said, start with the easiest thing, change the fuel out.

 

[sundance]

@Welderman85 ----Please report back and let us know what you find. Too many of these threads die with no closure.

 

[Lightning Performance]

Dry out the fuel tanks or siphon them dry in the lowest spot.

 

[Welderman85]

This is the fuel after sitting 24 hours. I haven't had time to get new gas or check on anything else. I will definitely post back whatbi find out

 

[Lightning Performance]

This is the fuel after sitting 24 hours. I haven't had time to get new gas or check on anything else. I will definitely post back whatbi find out

Use a tilted clear glass jar under light.

 

[Brufab]

looks like off road diesel I'm my area.

 

[OM617YOTA]

looks like off road diesel I'm my area.

That would definitely cause some running issues in a chainsaw!

Our cherry flavor diesel is darker.

 

[SS396driver]

That would definitely cause some running issues in a chainsaw!

Our cherry flavor diesel is darker.

VP two stroke oil is a bright red OP stated he used that for the mix

 

[OM617YOTA]

VP two stroke oil is a bright red OP stated he used that for the mix

Yep I'm aware. The diesel thing was just rhetorical, yes that would cause running issues.

 

[lwmibc]

An article worth reading.

https://www.caranddriver.com/news/a15339380/the-vapor-rub-summer-versus-winter-gasoline-explained/