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I have a 2018 xx with 5500 miles. The machine always starts normally with good idle in the mornings, however, after turning it off after riding for 10 mins or so and trying to restart after a few minutes, the machine will not start. I eventually get the machine to start after 4 to 10 attempts but it has a very poor idle and will stall out if the gas pedal is touched (i do get the occasional back fire when trying to start). Once I put the machine In gear and get moving, it will run absolutely fine with no issues and will idle normally. That being said, I can smell gasoline at times. If I turn the machine off for a couple hours and let cool down, it still won't start. It seems the machine needs to sit overnight before it will fire up like normal again. Fuel pressure is fine and nothing wrong with Injectors. I've read that some gapped down the spark plugs to .02-.025 but I have a hard time believing that this would fix my problem (though I am certainly willing to try). Any advice is appreciated! Thanks in advance!!
 

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Welcome Jbusser. Although I don't know much about the XX, an engine is an engine. Always check the easiest stuff first. First, how do you know the injectors are fine? Especially smelling gas? Have you checked all the vent lines? Is one kinked? Hard 5500 miles? Might need a valve adjustment? Possible fuel pump issue?
 

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Welcome Jbusser. Although I don't know much about the XX, an engine is an engine. Always check the easiest stuff first. First, how do you know the injectors are fine? Especially smelling gas? Have you checked all the vent lines? Is one kinked? Hard 5500 miles? Might need a valve adjustment? Possible fuel pump issue?
Hi there, thank you for the comment. We pulled the fuel rail off with Injectors and used some compressed air to test for leaks. We then plugged the fuel line back into the rail and plugged in the Injectors and observed the Injectors when we attempted to crank over the engine. Again, we didn't see any leaks and the Injectors appeared to be spraying gasoline appropriately. The 5500 miles were not particularly hard miles. I will be checking vent lines this weekend and I will ask my mechanically inclined neighbor about adjusting valves. Thanks again!
 

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I had something similar. Mine would start hard and run like shit until it warmed up. Ended up being the ignition coils. If I cranked long enough I'd smell raw gas.
 

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I have a 2018 xx with 5500 miles. The machine always starts normally with good idle in the mornings, however, after turning it off after riding for 10 mins or so and trying to restart after a few minutes, the machine will not start. I eventually get the machine to start after 4 to 10 attempts but it has a very poor idle and will stall out if the gas pedal is touched (i do get the occasional back fire when trying to start). Once I put the machine In gear and get moving, it will run absolutely fine with no issues and will idle normally. That being said, I can smell gasoline at times. If I turn the machine off for a couple hours and let cool down, it still won't start. It seems the machine needs to sit overnight before it will fire up like normal again. Fuel pressure is fine and nothing wrong with Injectors. I've read that some gapped down the spark plugs to .02-.025 but I have a hard time believing that this would fix my problem (though I am certainly willing to try). Any advice is appreciated! Thanks in advance!!
My xx will do the same thing if I try to start it with my foot on the gas
 

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My 2018 XX is having a similar issue. First start of the day it fires right up but runs a little rough for maybe 20 seconds and then idles fine and runs smooth. Turning it off after driving for a while at normal operating temperature it is hard to start. It cranks fine and after the normal delay it fires once or twice and dies. It takes 2-3 attempts and when it starts it is very rough and I have to play with the throttle to get it going somewhere near normal idle. After restarting like this it seems to run normal at speed and will idle OK. There is often a gasoline smell too.
Just a thought: I recently cleaned the spark arrestor and found it about 1/3 clogged with fine cotton like material. After running 20 or so hours I checked it again and the buildup was starting again. Has anyone with the hard warm start checked the spark arrestor? I'm wondering if the packing in the muffler is clogging it a bit causing the hard restart.
Also, in a bid to find out if the hard warm start issue was ignition or fuel, I ran the engine until 190 degrees and switched it off. Then sprayed starting fluid into the air intake immediately after the start up issue while the engine was struggling to find a smooth idle. The engine nearly died. I think the issue is a fuel problem, too much fuel causing flooding. Explains the gasoline smell that accompanies the startup problem.
 
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