Help: Husky 288xp won't idle.

[TomF]

Help: Can't get Husky 288xp to idle, replaced carb, replaced P/C, crankcase holds 7 psi vac and pressure, both carbs hold 7 psi vac and pressure. Linkage is not bent, all new top gaskets. new crank seal on clutch side, I'm stumped.
Thanks Tom

 

[Squareground3691]

Is that a new carb you replaced or just another old carb ?

 

[TomF]

Is that a new carb you replaced or just another old carb ?

It is a new aftermarket carb, have also tried it with a running carb from another saw all three same, no idle.

 

[Squareground3691]

Help: Can't get Husky 288xp to idle, replaced carb, replaced P/C, crankcase holds 7 psi vac and pressure, both carbs hold 7 psi vac and pressure. Linkage is not bent, all new top gaskets. new crank seal on clutch side, I'm stumped.
Thanks

It is a new aftermarket carb, have also tried it with a running carb from another saw all three same, no idle.

Ur impulse hole from crankcase not blocked at all check that , fuel line and filter check ?

 

[Squareground3691]

Ignition system in good condition no shorts any where possibly.

 

[Squareground3691]

I would try doing a full rebuilding the oem carb on saw if nothing else works those aftermarket ones can give u fits sometimes, I always try and use OEM parts , and gaskets

 

[TomF]

Ur impulse hole from crankcase not blocked at all check that , fuel line and filter check ?

Please correct if I'm wrong but the fuel pump side of the carb would not work if the impulse line were blocked. is that correct?

 

[TomF]

I would try doing a full rebuilding the oem carb on saw if nothing else works those aftermarket ones can give u fits sometimes, I always try and use OEM parts , and gaskets

I have done that using oem parts, and made it a point to ensure the small idle holes in the carb are open.

 

[Squareground3691]

Yes , sometimes the gaskets holes don’t line up properly from cylinder to carb

 

[TomF]

Please correct if I'm wrong but the fuel pump side of the carb would not work if the impulse line were blocked. is that correct?

I have not checked the fuel line or filter the PO did replace both but I thought that an issue there would keep it from running at high speed not lower speeds. If I am wrong, please let me know.

 

[TomF]

Yes , sometimes the gaskets holes don’t line up properly from cylinder to carb

I have spent weeks trying to solve issue and looked at the gasket alignment, it looks good.

 

[TomF]

Ignition system in good condition no shorts any where possibly.

PO replaced coil and sending unit near flywheel (sorry, can't remember name of unit), good spark

 

[lone wolf]

Aftermarket carb ,forget it. Any OEM carbs avail for that saw?

 

[Cliff R]

The OEM Tillotson carbs are difficult to find. Took me quite a while to locate one for my 268XPS, expensive as well.

The off-shore replacement carbs for those saws aren't worth two squirts of duck poop, so NEVER buy one as an attempt to evaluate a carburetor issue. The only good sound any of those carbs make is when you "tink" them off the trash can in the office!......IMHO.......Cliff

 

[mbrick]

Try replacing or temporarily removing the in tank filter?

 

[Automender]

So you have said that you replaced the carb with a known working carb from the same type of saw?? That should rule out a carb issue. What's the compression since you replaced the P/C? Also you should be able to see oil movement if a drop is place in the impulse hole or tube. I had a Husky Cut Off saw that had weak compression and would flood at idle and hard to tune. Just replaced rings and saw worked perfectly and good stable tuning. What does the sparkplug look like, wet with gas?

 

[12fergus]

Please correct if I'm wrong but the fuel pump side of the carb would not work if the impulse line were blocked. is that correct?

That is correct. Put oil in carb end of pulse line. Just a squirt. You should see it move in and out when turning over crank.When having problems like this replace all air and fuel lines, fuel filter etc to rule them out. Crankcase pressure: get 10. Even if you have to dunk it in a bucket of water to find leak.