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Poulan 4218 avx stalls under load

This is a discussion on Poulan 4218 avx stalls under load within the Small Engines forums, part of the Tech Support Forum category. Have a pretty new(maybe 6 to 8 hours on it) Poulan that starts fine but has always bogged down under


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Old 02-24-2010, 08:23 AM   #1
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Have a pretty new(maybe 6 to 8 hours on it) Poulan that starts fine but has always bogged down under load. It also runs better turned sideways than in the normal position.(it's true) It's been to the shop and they say nothing is wrong with it but they never tried cutting wood with it I do not beleive. It runs great until you put the wood to it and then it bogs down and dies. Any suggestions?

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Old 02-24-2010, 02:36 PM   #2
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Geez. 28 views and no responses. Too hard for you guys, eh?

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Old 02-24-2010, 09:10 PM   #3
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Take it back to the shop along with a log to let them try it out.

I would guess if it runs better on the side, sounds like a fuel pick up problem.

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Old 02-25-2010, 07:17 AM   #4
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Thanks!

Quote:
Originally Posted by Basementgeek View Post
Take it back to the shop along with a log to let them try it out.

I would guess if it runs better on the side, sounds like a fuel pick up problem.

BG
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Old 02-26-2010, 11:39 PM   #5
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hi sounds like it may have a carb problem ie fuel pumping or an igntion coil fault
it may even be air ar leak at the manifold - losing vaccum / pressure impulses to operate the carb fuel pump
have some trst the coil assy for reserve spark voltage , and check the carb for fault
then have some pressure and vaccuum test the crankcases for any air leaks
they can occur @ c/case seals. base gasket , manifold block or boot or gasket
or even a porous casting

have some one with the right gear pressure and vacuum test c/cases - tricky
coil test - shop can do should jump a 6 mm mm gap minimum

check the tank breather and make sure fuel line to f/filter is long enough for it to flopp around inside tank and not get hung up

cheers mstpops
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Old 07-25-2010, 10:31 AM   #6
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Quote:
Originally Posted by mstpops View Post
hi sounds like it may have a carb problem ie fuel pumping or an igntion coil fault
it may even be air ar leak at the manifold - losing vaccum / pressure impulses to operate the carb fuel pump
have some trst the coil assy for reserve spark voltage , and check the carb for fault
then have some pressure and vaccuum test the crankcases for any air leaks
they can occur @ c/case seals. base gasket , manifold block or boot or gasket
or even a porous casting

have some one with the right gear pressure and vacuum test c/cases - tricky
coil test - shop can do should jump a 6 mm mm gap minimum

check the tank breather and make sure fuel line to f/filter is long enough for it to flopp around inside tank and not get hung up

cheers mstpops
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Old 07-25-2010, 10:33 AM   #7
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have seen the same problem, turned out to be spark arrester screen, can be cleaned by using propane torch, after removing, hold with pliers and brush off residue, might be worth looking at

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