Efi utv stalls a few seconds after starting
#1
Efi utv stalls a few seconds after starting
Hey all. New member with limited experience. Have a hisun 700 that ran great when it went into winter storage. Ever since it will start as long as it is in the "prime" stage. Dies a few seconds later; exact same situation every time. Turn key off and wait 15-20 seconds and happens all over. Fuel rail has good pressure. New plug. Took apart all electric connections and greased them (connections around engine). Any help would be beyond appreciated.
#2
#3
Tx for your responce. The fuel rail holds the same Pressure during and after priming. Pulled injector and confirmed good misting pattern. Put an in-line spark tester. It appears I am losing spark about the same time the priming sequence ends. I have gone through all harnesses now as well. Is there some sort of secondary system that takes over for providing spark. It's as if the battery gives initial spark and what ever comes next is failing. I cleaned map sensor and replaced iac. Thoughts?
#4
Tx for your responce. The fuel rail holds the same Pressure during and after priming. Pulled injector and confirmed good misting pattern. Put an in-line spark tester. It appears I am losing spark about the same time the priming sequence ends. I have gone through all harnesses now as well. Is there some sort of secondary system that takes over for providing spark. It's as if the battery gives initial spark and what ever comes next is failing. I cleaned map sensor and replaced iac. Thoughts?
#6
ahhh.. so if i get this right after the pump builds pressure and shuts off you loose spark? 2 things are coming to mind when fuel pump shuts off it may be shorting out sending power up the ground? Or what is the condition of your battery? Full charge, have you tried jumping another battery to see if the issue is still their. Can also try after the fuel pump shuts off pull the relay for fuel pump and see if you get spark.
#7
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#8
Pump relay should be in your fuse box.