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i can not find my last thread so i will start over because i need some help please. i have a 2005 196 ski with zr6 motor with 460 hours. have had zero problems. last time out after about one hour engine came to idle, sounds like starving for fuel and then came to a stop. takes 5 to ten keys starts and about five min to restart. problem my then not happen again for hours or 5 min.
step 1: installed fuel pressure guage at port and used boat until it happened again. looked at guage and showed 10 psi pressure until engine stopped. motor would not restart until guage suddenly jumped to
70 psi and motor ran fine.
step 2: replace both low pressure, high pressure fuel pumps, and fuel filter (it was clean and no signs of water)
step 3: test boat today, ran great for a while, then same thing. no fuel pressure. motor does not start until guage jumps from 0 to over 60 psi. then runs fine until pressure is lost. could be 5 five min or and
hour. it will do it at any time. load or no load. idle or 20 mph.
this is what i have noticed. i have drained drain fuel fuel cell when boat has been running fine and get almost a quart of fuel from it. this time when engine shut off i did not try to restart motor. i removed 7/16 fuel drain plug and about 2 ounces of fuel came out instead of the quart.
i have also put my mouth over the fuel tank vent and blown into the vent with no problem. i believe my tank is venting. i also swapped the locations of the wire harnesses on the three relays on top of the ecm. i did not have any new ones, just plugged each one to a different one. they are all the same.
what do i do next. my boat is not showing any codes.
step 1: installed fuel pressure guage at port and used boat until it happened again. looked at guage and showed 10 psi pressure until engine stopped. motor would not restart until guage suddenly jumped to
70 psi and motor ran fine.
step 2: replace both low pressure, high pressure fuel pumps, and fuel filter (it was clean and no signs of water)
step 3: test boat today, ran great for a while, then same thing. no fuel pressure. motor does not start until guage jumps from 0 to over 60 psi. then runs fine until pressure is lost. could be 5 five min or and
hour. it will do it at any time. load or no load. idle or 20 mph.
this is what i have noticed. i have drained drain fuel fuel cell when boat has been running fine and get almost a quart of fuel from it. this time when engine shut off i did not try to restart motor. i removed 7/16 fuel drain plug and about 2 ounces of fuel came out instead of the quart.
i have also put my mouth over the fuel tank vent and blown into the vent with no problem. i believe my tank is venting. i also swapped the locations of the wire harnesses on the three relays on top of the ecm. i did not have any new ones, just plugged each one to a different one. they are all the same.
what do i do next. my boat is not showing any codes.
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