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PRIMING PROBLEM - 1/10/2011 3:45 PM   
DMENACE


 

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Joined: 2/13/2004
Last Login: 5/23/2013
From: La Ceiba, HONDURAS
Status: offline 		Need advice,

I have a TOC53MM w/reed valve assembly, the engine performs beautifully after the first start .The problem begins when I try to start the engine for the first time of the day, even closing the carb with my thumb to prime it there is no suction of fuel to the carburator so what a do is to put some fuel direct to the carb to start it the first time. No leaks, no clinches visible in fuel lines and choke butterfly closes thight.

Any advice or ideas are welcome.

Best Regards


DMENACE

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RE: PRIMING PROBLEM - 1/10/2011 3:49 PM   
All Day Dan


 

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From: MANHATTAN BEACH, CA, USA
Status: offline 		Use solder to close the hole in the choke plate. It should help. Dan.

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RE: PRIMING PROBLEM - 1/10/2011 3:57 PM   
captinjohn


 

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From: Hesperia Michigan, MI, USA
Status: offline 		The solder on the choke plate hole helps a lot.   Now if at the end of day,  try flooding the engine out with the choke....the next day it will start far better.  Give it a try.   Capt,n

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RE: PRIMING PROBLEM - 1/10/2011 4:00 PM   
Tired Old Man


 

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From: Valley Springs, CA, USA
Status: offline 		Try looking for air leaks at line fittings. When they are dry they may be sucking air. Once wet (after the first run) they may be using the oil to act as a seal.

The 3MM 53 has never needed the hole in the choke plate soldered closed. Yes, I've run a few of them.

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RE: PRIMING PROBLEM - 1/11/2011 2:39 AM   
DMENACE


 

Posts: 58
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Joined: 2/13/2004
Last Login: 5/23/2013
From: La Ceiba, HONDURAS
Status: offline 		Thank you all for your advises,

Thell what guys, I will apply all your good ideas. We´ll do the solder and change all the hose system and fittings. something got to work.

Keep you posted on the results,

DMENACE

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RE: PRIMING PROBLEM - 1/11/2011 3:09 AM   
All Day Dan


 

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From: MANHATTAN BEACH, CA, USA
Status: offline 		One more thing. Make sure the choke plate is closing fully. I had one become misaligned although the screw holding it was still tight. I almost threw out my shoulder trying to get the engine going before I discovered the problem. Dan.

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RE: PRIMING PROBLEM - 1/17/2011 11:41 PM   
DMENACE


 

Posts: 58
Score: 100
Joined: 2/13/2004
Last Login: 5/23/2013
From: La Ceiba, HONDURAS
Status: offline 		Bad news,

It din´t work , I tried everything, soldering the butterfly, change the fuel lines, filter, "T" connector I mean everything and the carb has a mind of its own. The weird thing is that after the first start engine works like a clock. Last thing I´m planning to do is order a repair kit so I can change all the diagphrams, besides this I do not know what to do but getting a new carb.

Best regards

DMENACE




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RE: PRIMING PROBLEM - 1/18/2011 12:11 AM   
Truckracer


 

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From: Des Moines, IA, USA
Status: offline 		Are the reeds sealing against the reed block? If you have a serious leak here, the pressure pulses to the carb will be weak. Also the pumping efficiency of the engine will be severely limited. The engine can still run though if it gets enough fuel and once it fires, the rapid motion of the piston can overcome the leaking reed and force it to seal. Performance would be limited though. Certainly worth a visual check of the reeds.

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RE: PRIMING PROBLEM - 1/18/2011 12:39 AM   
alburman


 

Posts: 44
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Last Login: 10/27/2012
From: Klamath Falls, OR, USA
Status: offline 		The carb holding bolts are threaded into plastic. Tightening the bolts a little too much I stripped one of them. I then had the same problem. There is a metal kit to replace it. That fixed mine.
Al Burman

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