New engine, New carb, Not sucking gas in to engine - Snowblower Forum : Snow Blower Forums
 
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post #1 of 9 Old 12-13-2019, 03:32 PM Thread Starter
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New engine, New carb, Not sucking gas in to engine

Short - Gas is in the bowl but not being drawn up in to the engine.

August 2019, I was called to repair a non starting snowblower, Craftsman, Chinese engine. He told me he bought it brand new in Dec? 2018 January 2019? (I don't think so)(He told me today the warranty expired July 2019) The problem was non-starting. I drained the gas, very very old looking with water in it. I drained the gas can which he filled the snowblower months (only months supposedly) before, disgusting. With fresh gas it didn't start with the electric start. I sprayed starting fluid in the carb through the throttle lever slot and it started but ran crappy as if the carb was dirty. I let it run to warm up. Tried again. It wouldn't start. I sprayed starting fluid again bit I did not direct the spray well, it backfired or popped, the excess starting fluid around the carb caught fire, flames. I sprayed it with a hose to put the flames out. Upon removal of the carb housing and carb, the fire caused the choke plastic and choke thing with the hole in it for the linkage to melt so I felt forced to buy a new carb at my own expense. I made a mistake by not putting gas in it and starting it. I did not want gas to sit for 5+ months. He called me this week because he could not get it to start. I drained the gas and it was dark golden in color. I put fresh gas in. It would not start. It has good spark. Putting gas in the spark plug hole it starts and runs but stops when that gas is consumed. Gas is freely flowing in to the carb bowl and out from the float inlet valve. Gas is not being drawn up in to the engine intake valve. I did not have time but I was going to stand the blower up, remove the carb housing and bowl, then spray carb cleaner in to the main jet. If the main jet is removable, I will remove it. After this, what is there? Remove the carb, disassemble, and spray in to every hole? Replace the carb? It was $80! On the internet! New snowblower, New engine, assume good compression, assume new valves, assume valves are good.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale

Last edited by JLawrence08648; 12-13-2019 at 03:44 PM.
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post #2 of 9 Old 12-13-2019, 03:42 PM
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if its not drawn up then compression is bad, check compression.
or float set too low, mixture set too lean, choke not closed
dirty carb

Bought a dead but now fixed 1980ish craftsman II 10/28....ITS ONE HEAVY BEAST

MY VIDS ON FIXIN HER UP

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post #3 of 9 Old 12-13-2019, 03:50 PM
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+2 for compression

No squishy, no sucky either

.

1989 John Deere 1032
1979 Toro 5/24 38040 (now a 6.5)
1978 Ariens S16H Tractor & Plow
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post #4 of 9 Old 12-13-2019, 03:54 PM
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Those carbs on E-bay are less then $20 ...I've bought a few.....
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post #5 of 9 Old 12-13-2019, 04:25 PM
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If the gas was green, it went bad, I'd clean the carb or replace and check compression, as others have said. Sounds like the owner neglects their equipment. I wouldn't go back after this.




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post #6 of 9 Old 12-13-2019, 04:25 PM Thread Starter
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Quote:
Originally Posted by cranman View Post
Those carbs on E-bay are less then $20 ...I've bought a few.....
The $80 was on eBay and Amazon. I only had the carb # from Craftsman to do a search.

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale
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post #7 of 9 Old 12-13-2019, 04:46 PM
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Quote:
Originally Posted by JLawrence08648 View Post
The $80 was on eBay and Amazon. I only had the carb # from Craftsman to do a search.
funny..I've done a couple of Craftsmens last few years with the chondra engines and had to replaces carbs...less then $20 for the ones I did...
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post #8 of 9 Old 12-14-2019, 01:54 AM
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Pull the spark plug and do the finger test on the compression/intake strokes. You may have a stuck valve.

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post #9 of 9 Old 12-14-2019, 04:34 AM
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chances are since the main jet is at the lowest point in the carb that it is again plugged from dirt in the fuel . the machine runs on fuel being directed to the engine, so it's not drawing up to . clean that carb it's new so hopefully you can reuse the gaskets
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