Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › Bleeding Fuel System 6BTA 250 hp
wlsnow100.I guess my valve to switch between tanks was lose, in some rough seas last night the valve managed to move about 1/4 turn to where it ran my 6BTA out of fuel.
My mission today afterwork is to get her started again. Any tips on bleeding the fuel system?
Hi Jamie,
I need help bleeding my 6BTA.
I found the pump etc, but is there a bleed screw somewhere??
Thanks in advance.
Bill
I was lucky enough were the paint was still fresh on the motor to see what bolts have had a wrench on them and not. Following what David said, and banjo fittings with no paint matched so i crack those.
Got to the injectors, cracked one and heard the air come out, so like Rob said, went to 100% WOT few cranks and she sounded like she was going to go, tightened down injector feed, again 100% WOT, turned her, and lowered down to idle…whole process took about 15 mins.
Can’t thank you guys enough!!!
Glad it went smooth. Please post some info on how you went about it and pics if you took any. Posting the resolution and the methods adds tremendous value to these threads.
Thanks guys!! She fired up, wasn’t too painful!!! Ran her at the dock for an hour!! Couldn’t take her for a test burn because I have some steering issues i need to fix today.
Twin.
Yeah, I’m a little skeptical of the whole valve moving myself, it wasn’t much. Both motors feeding off the same tank, right before it stalled it started to sputter like it wasn’t getting fuel, then off. I opened up the Racor and it was bone dry…
Heading down now, I will post what I find out.
Thanks for the reply!!
Which pump, the ND?
When you do get ready to crank her over to fire her up – put the throttle at 100% WOT and pull back after she starts.
You might be installing a squeeze bulb after this event.
Single screw? You got towed back in?
Can’t say I recall a ball valve that would ever be able to move on it’s own?
Thanks for this. That’s the process I figured, but wanted to hear some opinions.
I am going to give it a shot afterwork tonight.
Thank you!!
fuel feed pump is on the left side of the engine. Sometimes the engine drive cam is on the feed pump lever and you need to bump or rotate the engine a bit for the lever to pump fuel.
Work your way to the injectors. I believe the first thing I do is loosen the fuel banjo fitting on the intake manifold. I believe this is after the secondary filter if I remember correctly. Then at the injection pump fitting. Finally crack the injector fittings. Leave the injector fittings loose, crank the engine till you see fuel then tighten them up. Hopefully this will get her running again.
D
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