Tweet
2002 DF60 - Fuel Spilling from Evaporation Hose???
Hello everyone! First post here. I've had a new issue pop up recently. I really need some advice.
While working on other issues, I noticed fuel spilling from the evaporation hose on the lower starboard side panel. After review other posts, I actually removed the entire intake manifold in order to inspect the needle and float on the VST and actually clean out the VST itself for the first time. I thought maybe the needle was stuck in the open position and too much fuel was entering the VST. Upon inspection there was no issue that I could see with the float needle assembly and the VST was super clean inside! (thank you Seafoam!) Nothing really needed. I put Humpty Dumpty back together again. Cranked her up and no problems, no spills. Two hours later with the gas lines hooked up I came back outside and could see evidence of spillage again on the right side lower unit! The engine was not even on! It was just sitting there outside.
To note. I recently changed to an Attwood portable 12 gallon tank. This is a closed system, with no vent relief (Newer EPA Standards). So the tank would expand and really never contract. My theory was this pressure was forcing more gas than the engine wanted into the VST to the point where it would back up the vent tubing into the Evap Hose and out. After some research, Attwood actually makes a Fuel Demand Valve which actually helps to relieve the pressure. So, last week I put this on between the tank connection and the bulb.
I should note that I recently change the following, due to small black rubber debris/particle and clogging injectors. All high pressure fuel tubing, some low pressure fuel tubing, low pressure filter, high pressure filter, new fuel/water separator on transom, new fuel lines from separator on transom to cowling with new clip. I've dropped the injector rail and have been inspecting the fuel delivery chain for some time. The engine is running great right now. I do have a Check Engine Light on currently. 3 then 1. IAC Valve. I have cleaned the throttle body, and the IAC Valve, adjusted the bypass idle screw and cleaned the IAC solenoid. The light disappeared, and the engine has been idling really great! But the light/alarm came back on when I put my finger on the end of the Evap Hose and it stalled out, as it should have.
I wasn't too concerned. I believe the engine light/IAC code along with the fuel Evap Hose spillage are two separate things...
Went fishing this weekend in Grand Isle, LA. Caught some specs. Engine ran great, no fuel delivery issues at all. But when I got it back to the house and was flushing it... THERE IT WAS, more fuel spilling out the Evap Hose. I'm stumped. I really am. I do not get it. Any thoughts? The engine ran all weekend with the check engine light on. (might just need to adjust the bypass screw again) I'm more concerned about the fuel spillage.
HELP. PLEASE. Thanks in advance!
While working on other issues, I noticed fuel spilling from the evaporation hose on the lower starboard side panel. After review other posts, I actually removed the entire intake manifold in order to inspect the needle and float on the VST and actually clean out the VST itself for the first time. I thought maybe the needle was stuck in the open position and too much fuel was entering the VST. Upon inspection there was no issue that I could see with the float needle assembly and the VST was super clean inside! (thank you Seafoam!) Nothing really needed. I put Humpty Dumpty back together again. Cranked her up and no problems, no spills. Two hours later with the gas lines hooked up I came back outside and could see evidence of spillage again on the right side lower unit! The engine was not even on! It was just sitting there outside.
To note. I recently changed to an Attwood portable 12 gallon tank. This is a closed system, with no vent relief (Newer EPA Standards). So the tank would expand and really never contract. My theory was this pressure was forcing more gas than the engine wanted into the VST to the point where it would back up the vent tubing into the Evap Hose and out. After some research, Attwood actually makes a Fuel Demand Valve which actually helps to relieve the pressure. So, last week I put this on between the tank connection and the bulb.
I should note that I recently change the following, due to small black rubber debris/particle and clogging injectors. All high pressure fuel tubing, some low pressure fuel tubing, low pressure filter, high pressure filter, new fuel/water separator on transom, new fuel lines from separator on transom to cowling with new clip. I've dropped the injector rail and have been inspecting the fuel delivery chain for some time. The engine is running great right now. I do have a Check Engine Light on currently. 3 then 1. IAC Valve. I have cleaned the throttle body, and the IAC Valve, adjusted the bypass idle screw and cleaned the IAC solenoid. The light disappeared, and the engine has been idling really great! But the light/alarm came back on when I put my finger on the end of the Evap Hose and it stalled out, as it should have.
I wasn't too concerned. I believe the engine light/IAC code along with the fuel Evap Hose spillage are two separate things...
Went fishing this weekend in Grand Isle, LA. Caught some specs. Engine ran great, no fuel delivery issues at all. But when I got it back to the house and was flushing it... THERE IT WAS, more fuel spilling out the Evap Hose. I'm stumped. I really am. I do not get it. Any thoughts? The engine ran all weekend with the check engine light on. (might just need to adjust the bypass screw again) I'm more concerned about the fuel spillage.
HELP. PLEASE. Thanks in advance!
Comment