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Farmall & IHC Tractors Discussion Forum
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450 quit now won't start????

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Hoss357

02-29-2008 09:01:56




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hey guys my 450 up and quit and now won't start i posted thursday but last night i found that the timing is fine ,i'm getting spark, it seems that it isn't cranking as fast and it pops out the exaust once and a while , like it take more starter to crank it????? i'm gonna check compression this weekend????? ?? thanks in advance




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kossuth

02-29-2008 17:39:30




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 Re: 450 quit now won't start???? in reply to Hoss357, 02-29-2008 09:01:56  
Also, I've seen on an M (same motor basically) where the gear drive pin on the distributer broke and caused a similar situation to what you're describing here.



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r4etired

02-29-2008 15:16:00




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 Re: 450 quit now won't start???? in reply to Hoss357, 02-29-2008 09:01:56  
Some 450's I have seen have worn the distributor drive coupling to the point it will slip and jump time, If that's the case with yours you can get a temporary fix by putting a machine washer behind the drive.



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Janicholson

02-29-2008 09:16:22




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 Re: 450 quit now won't start???? in reply to Hoss357, 02-29-2008 09:01:56  
Assuming there is no moisture in the cap, and that the battery is charged well, and that there is fuel getting through the carb. The popping indicated issues with timing. (I heard you say it is in time)
I didn't look closely at the first post, so here goes. Pull #1 plug. rotate the engine by bumping the starter until there is thumb pressure on the hole as #1 comes up on compression. carefully turn the engine By hand with the fan, or rolling it in high gear until the piston is at TDC. now look at the rotor and see if it points to the 1:30 position looking forward at the distributor. The points should just be at the point that they begin to open. Wiggling them with a thin screwdriver should produce spark at the coil wire if the ignition is turned on. If this is operational, and the wires are in the CW order of 1342, the system should be fine. Now check for serious vacuum at the carb intake (big rubber hose off) with your palm while cranking. If massive suck your hand hard vacuume is present, that seems correct. A defective rotor, or cracked cap would be my next guess. JimN

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Hoss357

02-29-2008 11:05:00




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 Re: 450 quit now won't start???? in reply to Janicholson, 02-29-2008 09:16:22  
even though it is getting spark?



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Janicholson

02-29-2008 12:50:33




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 Re: 450 quit now won't start???? in reply to Hoss357, 02-29-2008 11:05:00  
Yes, spark has nothing to do with timing, it is just what the ignition system does, it is not when it does it. "When" is timing "that" is making spark.
Foot ball players must wait for the snap. that is timing. what they do is spark.



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