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8N Woes
:

Power Loss

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deadordying

02-15-2001 15:53:50




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I was working my 49 8N relatively hard (grading mud) for about two hours. All of a sudden it spit, sputtered and died and wouldn't restart until I let it set a bit. Oil had been blown out the filler tube, but no leakage around the headgasket and no visible cracks in the block. I managed to get it to putt-putt back to the barn, it didn't sound like it was firing on all four, let it cool off and it started right up. It will barely pull itself on level ground with the throttle about 3/4 if I let the clutch out very slowly. If I disengage it normally, it coughs and dies. It won't run at a very low idle- it did before this incident. Looked today and saw oil/gas/something bubbling up out of one of the spark plug holes. The engine sounds good at about 1/3 throttle or higher, but any lower it spits and sputters and dies. Should I bury it or does anyone have any ideas?

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Dave in Mo

02-16-2001 09:32:54




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 Re: 8N Woes - Power Loss in reply to deadordying, 02-15-2001 15:53:50  
Pull the gas line off at the carb when it's cold and note the flow. It sounds to me like it's out of gas due to clogged fuel fitlers.



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Dell (WA)

02-15-2001 17:16:17




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 Re: 8N Woes - Power Loss in reply to deadordying, 02-15-2001 15:53:50  
Not what you want to hear but..... . "oil/gas/something bubbling up out of one of the spark plug holes" ..... ..sounds to me like you might have burned a piston. Blowing oil out the oil filler tube, yep, big time piston hole. Time for a compression check on all cylinders and make it a dry and then wet check.

N's will run on 3 cylinders fairly well at higher RPM's where the flywheel smooths out the engine but won't have much power. ..... .Dell

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deadordying

02-15-2001 21:52:06




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 Re: Re: 8N Woes - Power Loss in reply to Dell (WA), 02-15-2001 17:16:17  
Just to clarify- there's no oil coming out the filler tube now when it runs. It only happened at the time. Now there's just the white milky substance formed from condensation in the filler tube. Would a burned piston cause oil to come out the filler tube all the time it's running or just when it blows? If it were a bad piston, wouldn't it blow oil out the filler tube all the time it's running? There are no other oil leaks anywhere. Thanks.

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Dell (WA)

02-15-2001 22:10:40




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 Re: Re: Re: 8N Woes - Power Loss in reply to deadordying, 02-15-2001 21:52:06  
Compression gauges are not that expensive, about $10 at pep boys. And no, your oil tube should have baffles inna it to stop most oil from being pressured out. and if'n yer low on oil level, then it wouldn't blow out eather..... Dell



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deadordying

02-15-2001 22:15:11




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 Re: Re: Re: Re: 8N Woes - Power Loss in reply to Dell (WA), 02-15-2001 22:10:40  
Thanks, Dell. I'll test the compression. The oil level is fine. I didn't mean to imply that there was a huge amount of oil coming out of the filler tube, but there was some discharge when it stopped running. I've since changed the oil in fact, so she's not low.



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bg

02-15-2001 21:34:57




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 Re: Re: 8N Woes - Power Loss in reply to Dell (WA), 02-15-2001 17:16:17  
How about a new set of plugs, torqued tight enough not to leak?



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