NEED HELP w/ Homelite XL-924

[Stihl dude]

I have a Homelite XL-924 that I can’t get to idle and keep running!

Here is what I know:
-It has spark + brand new spark plug adjusted with the correct gap
-145 psi
-Exhaust baffle has been grinded and is free of any build up
-Brand new fuel lines. Carb is pulling gas. Running 32:1??
-Brand new Tillotson carb

At first I installed a carb kit on the original carb but that did not work or change any thing. I purchased an OEM Tillotson carb meant for a XL-925, installed it and now it starts but does not idle. After pulling the cord it goes high up in the revs for about 5-10 seconds then dies. I’m at 1 1/4 turns out for the High / Low jet. The carb pulls gas.

What could it be? What am I missing or not looking at?

Cheers!!

Will post video soon

 

[Squareground3691]

Possible air leak maybe ?

 

[Maintenance supervisor]

The intake manifold is a type of plastic/ bake o lite and they notoriously leak from either a crack or warpage.

 

[Stihl dude]

The intake manifold is a type of plastic/ bake o lite and they notoriously leak from either a crack or warpage.

Should I consider replacing it just in case ?

 

[Stihl dude]

Possible air leak maybe ?

Where do I start the trouble shooting ?

 

[Maintenance supervisor]

You can replace it, that would eliminate any problems, but I'd remove it and inspect it thoroughly first. Could be 1 of the gaskets associated with it.

 

[a. palmer jr.]

The first place to start on that old of a saw, assuming it has spark and compression, would be a vacuum/pressure test of the crankcase. It's probable it might need crank seals.

 

[Homelite-Homer]

After it starts pull the choke out about half way and see if it continues to run, you may have to add a little throttle to keep it running. If that works I would say what everyone else is saying. You have a Vacuum leak.. Possibly a cracked intake or a very bad crank seal. Hope this helps..

HH

 

[a. palmer jr.]

I might ask what kind of carburetor is on that saw? I have some of the HDC Walbro carbs that have been giving me fits, even with new kits and cleaning!

 

[Maintenance supervisor]

Hs- 151 governor or non HS 150 tillotson.

 

[Stihl dude]

You can replace it, that would eliminate any problems, but I'd remove it and inspect it thoroughly first. Could be 1 of the gaskets associated with it.

I'll do that. Thank you

 

[Stihl dude]

The first place to start on that old of a saw, assuming it has spark and compression, would be a vacuum/pressure test of the crankcase. It's probable it might need crank seals.

Perfect. Thanks for the pointers

 

[Maintenance supervisor]

I believe that the crank seals are the very common 6120 or single lip 6119 .

 

[canadian175]

If seals was leaking it may no pull gas.just a though.beacuse cant built up pressure in crankcase.i think.

 

[a. palmer jr.]

If seals was leaking it may no pull gas.just a though.beacuse cant built up pressure in crankcase.i think.

With a small leak it might build up a smaller pulse but not with a big leak. But with any leak at all it should be repaired. I just got done repairing a big leak in a Husqvarna and it wasn't in the seals at all, it was the cylinder base that was leaking.

 

[canadian175]

That could do i to.have to get a leak detector.have one for carbs.

 

[a. palmer jr.]

That could do i to.have to get a leak detector.have one for carbs.

All I have for pressure testing and for carbs is a blood pressure bulb, some hoses, a gauge, and a T fitting. Just got done testing an 046 Stihl for leaks, didn't find any, so I'm installing a new piston and cylinder on it. Guess the previous owner forgot to put oil in the gas..