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Discussion Starter · #1 ·
I have a diesel 997 with 400hrs on it. When starting it for the first time this season it mowed great for about 20m then shut off. It will start again but takes a minute likes it was ran out of fuel. Then shut off after 15m, then 10 etc..

every cycle it gets shorter until it won’t start at all. Next day or a few hours after it has cooled off it starts again and it starts all over.

I assumed a fuel issue so I have changed the pump, filter, new air filters and drained the tank and added new fuel, same sequence of events..

any ideas?
 

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How is the temp? Does it have an overtemp shutoff of some sort? Does the engine turn over when you try after it dies?

I don't know what it could be, but any problem like that usually leads me to look at sensors.

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Discussion Starter · #3 ·
I don’t have a temp gauge but I am not getting any warnings, it doesn’t appear to be running hot from what I can tell. Fans on etc..

yes engine turns right over after it dies just takes a fewkey cycles like it doesn’t have fuel then fired right up runs perfect until it dies again, it’s so weird
 

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I don’t have a temp gauge but I am not getting any warnings, it doesn’t appear to be running hot from what I can tell. Fans on etc..

yes engine turns right over after it dies just takes a fewkey cycles like it doesn’t have fuel then fired right up runs perfect until it dies again, it’s so weird
When it happens immediately shut the key off to stop the fuel pump then look in the water separator to see if it is full of fuel
 
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Something simple and free to try - loosen the fuel cap and bit next time. Sometimes the vent in the fuel cap gets clogged and creates a vacuum in the tank.

Or - the next time it shuts off quickly remove the fuel cap and listen carefully if you get a “whoosh” of air moving.
 

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Any codes? sounds like the same problem I had with the x750, pretty much the same system and ended up being crap in the tank that would plug the pickup.
I 2nd this post. I had a very similar issue with a plugged pickup line at the bottom of the tank.
 
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