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GT 16 Engine Surge


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#16 larrybl ONLINE  

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Posted March 26, 2017 - 09:23 PM

Not knowing what "Park" is, and if there is a safety switch associated with it, your description of the symptom seems fuel related. A diagram and troubleshooting guide should be available in the manuals section.

 

My tractors are 30 - 40 years old.



#17 BoilerBrown OFFLINE  

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Posted March 26, 2017 - 09:24 PM

This is a late 70's-early 80's tractor as well.

#18 larrybl ONLINE  

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Posted March 26, 2017 - 09:31 PM

This is a late 70's-early 80's tractor as well.

I replace fuel lines on mine every 5-7 years due to the 10% ethanol. It screws up the inside of the fuel lines and causes rubber particles to clog the carb.  


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#19 BoilerBrown OFFLINE  

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Posted March 26, 2017 - 09:33 PM

I replace fuel lines on mine every 5-7 years due to the 10% ethanol. It screws up the inside of the fuel lines and causes rubber particles to clog the carb.


I will definitely add that to my list of items to-do. Especially if I can't get my issue situated. Thank you.

#20 1oldbuzz OFFLINE  

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Posted March 27, 2017 - 04:49 AM

Shift linkage pinching off the fuel line???


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#21 BoilerBrown OFFLINE  

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Posted March 27, 2017 - 04:55 AM

Shift linkage pinching off the fuel line???

That's a thought.  I believe it runs down the opposite side frame rail but I will check and see. 



#22 shorty ONLINE  

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Posted March 27, 2017 - 05:11 AM

Welcome to gttalk!
The model number sounds to be late 70's era. Putting it in park and out again is giving you a no load to load scenario. With the mechanical fuel pump, if that is weak it can react like. Also if there is any play in the linkage from the govenor arm to the carb it can do this.

#23 Scrapr65 OFFLINE  

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Posted March 27, 2017 - 05:19 AM

Welcome to GT talk,

Theres a lot of knowledge and good people on this site. :thumbs:  :wave:


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#24 BoilerBrown OFFLINE  

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Posted March 27, 2017 - 05:38 AM

Welcome to gttalk!
The model number sounds to be late 70's era. Putting it in park and out again is giving you a no load to load scenario. With the mechanical fuel pump, if that is weak it can react like. Also if there is any play in the linkage from the govenor arm to the carb it can do this.

I thought about this as well.  I put it in forward, just enough to start drawing a load but not enough to actually move the tractor (so a very small load) and it will do it. 

 

Will a failing fuel pump do this sporadically? Like I said, I have days where I can go all day long with no issues and other days where I can't even leave the garage without it surging.  

 

I played with the governor and am fairly confident it is ok.  It seems to be working just fine.  

 

Thank you!! 



#25 shorty ONLINE  

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Posted March 27, 2017 - 05:44 AM

That's how it was acting on mine. Just another item to check if the other things suggested seem ok.
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#26 BoilerBrown OFFLINE  

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Posted March 27, 2017 - 05:55 AM

Thanks everyone! 

 

I will check everything mentioned this afternoon after work. 

 

Is there a functionality test for these mechanical fuel pumps or is it an item you just replace and see if it fixes it? 



#27 dodge trucker ONLINE  

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Posted March 27, 2017 - 06:05 AM

pinched wire that grounds out when you move the shifter?



#28 chieffan ONLINE  

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Posted March 27, 2017 - 07:01 AM

Check for a kill wire from the engine to the ignition switch that may be shorting out, rubbing some place or even shorting inside a wire loom from insulation break down.


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#29 Rock farmer ONLINE  

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Posted March 27, 2017 - 07:47 AM

Check loose carb, bad gasket under it.

#30 shorty ONLINE  

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Posted March 27, 2017 - 08:53 AM

Thanks everyone!

I will check everything mentioned this afternoon after work.

Is there a functionality test for these mechanical fuel pumps or is it an item you just replace and see if it fixes it?

I just pull the intake side off, put my finger on to feel for vacuum. Low key method of educated guessing.
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