Stihl 029 losing its prime

[begreen]

I've got a low mileage 029 that steadily is getting harder to start. The issue appears to be fuel related. I took it into the shop and they said a common problem is fuel strainer clogging, so we replaced the in-tank fuel strainer. That worked for the day, but soon afterward it started getting harder to start again. Today it took about 15 pulls before it fired up. The fuel is good, so is the plug. Once it's warm it starts right up, first pull. But then I ran out of gas, and now it won't start for love or money. I pulled the plug and it is bone dry.

One thing about this saw is there is no primer bulb to get fuel flowing. Any thoughts on why this might be happening and a fix? It used to start great every time.

 

[smokinj]

Not sure what your weather is but the colder it is the longer it takes to fire my saw's. If the fuel filter is new and it runs great after its warm Weather related my guess. Fuel lines would be my next step...

 

[southbound]

Yup check the impulse line.....

 

[begreen]

It was close to 50 today. The Echo leaf blower started right up on second pull, same fuel. I'll search around to see if I can get a good diagram on how the carb is plumbed. The term impulse line is new to me, I've never worked on the saw other than maintenance.

 

[southbound]

The fuel line is the fuel line from the tank to the carb...There is also a crank case vent "Impulse Line" that runs from the crank case to the carb...

Go here for the IPL.... http://www.arboristsite.com/showthread.php?t=72322

 

[smokinj]

It was close to 50 today. The Echo leaf blower started right up on second pull, same fuel. I'll search around to see if I can get a good diagram on how the carb is plumbed. The term impulse line is new to me, I've never worked on the saw other than maintenance.

change the lines.

 

[HittinSteel]

If the above suggestions do not fix the problem, it is time to start looking closely at the carb. Dismantling, cleaning and rebuilding is not a very difficult task with the proper IPL for the carb. We can probably walk you through it or some shops will do it for under $50.

 

[smokinj]

If the above suggestions do not fix the problem, it is time to start looking closely at the carb. Dismantling, cleaning and rebuilding is not a very difficult task with the proper IPL for the carb. We can probably walk you through it or some shops will do it for under $50.

How much does a new one fetch now?

 

[brages]

If the above suggestions do not fix the problem, it is time to start looking closely at the carb. Dismantling, cleaning and rebuilding is not a very difficult task with the proper IPL for the carb. We can probably walk you through it or some shops will do it for under $50.

How much does a new one fetch now?

$350, I think.

Or were you talking about buying a new carb? Madness! Start by cleaning it -- it's a super-easy job to clean out a carb. My hunch is the screen on the intake has gotten clogged up with varnish.

 

[smokinj]

If the above suggestions do not fix the problem, it is time to start looking closely at the carb. Dismantling, cleaning and rebuilding is not a very difficult task with the proper IPL for the carb. We can probably walk you through it or some shops will do it for under $50.

How much does a new one fetch now?

$350, I think.

Or were you talking about buying a new carb? Madness! Start by cleaning it -- it's a super-easy job to clean out a carb. My hunch is the screen on the intake has gotten clogged up with varnish.

I was talking about the carb.....lol

 

[HittinSteel]

Or a diaphram or inlet needle spring may be worn not allowing fuel in

 

[southbound]

Hurry up and figure this out I just picked up a lightly used ms 290 that has some of the same symptoms....

 

[smokinj]

Hurry up and figure this out I just picked up a lightly used ms 290 that has some of the same symptoms....

lol fuel filter fuel lines and carb kit everything coverd and fill good about selling it

 

[fidiro]

http://www.arboristsite.com/showthread.php?t=154979 this thread is about my 029 with pics of carb kit I bought for it. I purchased the 029 few weeks ago not knowing that the previous owner started a carb rebuild and put it all back together without finishing. Carb was missing all the gaskets and diaphram and I attempted everything to try to start it before I pulled it off to find it all missing. I purchased this walbro carb kit and after reading alot of threads here and arborist site and watching youtube about rebuilding it I did my first carb rebuild. (broken link removed to http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=180585029689) Saw runs excellent now. Here are a few pics of it now completed with 18" bar.

It could be the impulse line the fuel line or the carb needs rebuilding.

 

[HittinSteel]

Good job Pellet!

Not a real daunting task once you've done the research and get in to it. Ability to rebuild a carb is a great skill to have.

 

[HittinSteel]

Good job Pellet!

Not a real daunting task once you've done the research and get in to it. Ability to rebuild a carb is a great skill to have.

BTW, that 029 becomes a much different saw with a relatively easy muffler mod.

 

[fidiro]

Good job Pellet!

Not a real daunting task once you've done the research and get in to it. Ability to rebuild a carb is a great skill to have.

BTW, that 029 becomes a much different saw with a relatively easy muffler mod.

I have been reading about the muffler mod as well and I recently purchased a used muffler to do just that but I want to use it for a while stock and then change the muffler to see if I do notice any difference.

Hope the original thread starter gets his 029 back up working properly.

 

[southbound]

How did this turn out??? Did the OP get his fixed????