I changed my fuel lines again yesterday and filled the new lines with ULSD from an ear dropper. I tried to get as much frozen biodiesel out of there while I was at it. Now my car starts but sputters and dies immediately after. Someone showed me this thing that you unscrew partway and then pump up and down to purge air out of the lines but it was on his 300SD and I could never find it on my 115. Anybody know where it is or what I should do?
That is all part of the spin on fuel filter changing process. Crack the bolt, I think it's 21mm? at the top of the fuel filter. Then use the manual fuel pump and pump it until all the bubbles are out of the line and fuel leaks out the top of the bleed bolt as aforementioned. Crank the car with the pedal down on a fully charged battery and off you go.
I must say, the 300D W115 is the hardest diesel I have ever had to prime. It's quite frustrating actually.
That is all part of the spin on fuel filter changing process. Crack the bolt, I think it's 21mm? at the top of the fuel filter. Then use the manual fuel pump and pump it until all the bubbles are out of the line and fuel leaks out the top of the bleed bolt as aforementioned. Crank the car with the pedal down on a fully charged battery and off you go.
I must say, the 300D W115 is the hardest diesel I have ever had to prime. It's quite frustrating actually.
Are you talking about the bolt next to the one that I unscrew to take off the canister filter? I meant to try that one but it was getting dark and very very cold.
Are you talking about the bolt next to the one that I unscrew to take off the canister filter? I meant to try that one but it was getting dark and very very cold.
Yes that is the bolt. Loosen it and prime the fuel filter.
I found what I think was that purge pump today and pumped it about 300 times (seriously) The fuel in my clear lines moved around but didn't fill them. I got the engine to run after many failed starts but it sounded loud and I had to keep it revved up until it died minutes later. When I have the time I'll make sure I have no leaks in the lines, although I'm sure I tightened everything down.
You may have some air leaks in the lines but you may also be dislodging some bubbles as well. Is the primer pump giving some resistance or leaking excessively as the primer pumps do fail over time.
It's greasy but not dripping and there is resistance. How much do you usually have to pump it? I did it for several minutes at a time inbetween start attempts.
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