Two Dolmars dying in the cut :(

[LittleLebowski]

Both my 421 and Makita 6400 are dying in the cut, I can’t get anything done with either. I tried dumping my fuel and using TruFuel to no avail. I would appreciate any tips/advice.

 

[Dub11]

What do the fuel filters look like?

 

[LittleLebowski]

I’ll find out.

 

[beaglebriar]

If your fuel one is breaking down/ mushy it can suck shut and make them die out under load. I would go through the whole fuel system. Carb kit, fuel lines/filter.

 

[CR888]

Fuel, filters, spark screens.

 

[ammoaddict]

Only in the cut? Does it fire right back up and rev up?

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[Stevetheboatguy]

We know a guy. But he's gonna need to see the air filter to make a diagnosis.



Steven


Edit: a lil more serious now. Any chance the impulse line or tank vent could be the culprit? Has some issues on a 034 that were similar. Mine ended up being the impulse was split.

 

[LittleLebowski]

Only in the cut? Does it fire right back up and rev up?

Yup.

 

[LittleLebowski]

Edit: a lil more serious now. Any chance the impulse line or tank vent could be the culprit? Has some issues on a 034 that were similar. Mine ended up being the impulse was split.

I’m going to check but what are the odds this would happen to both at the same time?

 

[Canadian farm boy]

I’m going to check but what are the odds this would happen to both at the same time?

Both saws piss rev ok?
Both saws restart hot easy?

 

[ammoaddict]

I’m going to check but what are the odds this would happen to both at the same time?

It's very strange both saws would do this at the same time. Let us know what you find out.

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[Stevetheboatguy]

I’m going to check but what are the odds this would happen to both at the same time?

Forgot it was two saws. I lost two saws minutes apart a several years ago. Turned out the fresh shell vpower I used for mix was more like 65% ethanol not 10%. (Never got a answer from shell about the wtf) would have been fine in a car probably. But didn't work out well for me. It literally ate the fuel lines and gummed up everything. I drive the extra for e free now.


Steven

 

[mettee]

Forgot it was two saws. I lost two saws minutes apart a several years ago. Turned out the fresh shell vpower I used for mix was more like 65% ethanol not 10%. (Never got a answer from shell about the wtf) would have been fine in a car probably. But didn't work out well for me. It literally ate the fuel lines and gummed up everything. I drive the extra for e free now.


Steven

Could you have used the ethanol pump?

 

[tree monkey]

buy a stihl

 

[Wonkydonkey]

buy a stihl

 

[deye223]

buy a stihl

well someone had to say it ......

 

[huskyboy]

You leave old fuel sitting in them? How old are the saws would you say? Pour out your gas in glass jar and check for water contamination.

 

[LittleLebowski]

I have used ethanol fuel in the past with no issues, please not that I switched to TruFuel and it didn’t fix the problem.

 

[cuinrearview]

A peek at the piston on one of them may not be a bad idea. It's a quick thing to check and eliminates the question I'm sure a few of us have.

 

[deye223]

If e fuel has damaged the fuel line it will now happen with any fuel ......