Jesse Williams_49219 Member 26 Member For: 12y 9m 21d Posted 21/05/13 01:49 AM Author Share Posted 21/05/13 01:49 AM The check valve is a one way valve, yes?Which means it will stop fuel flowing back into the 044s, thus not going back into the tank? Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 8m 5d Gender: Male Location: @ my laptop Posted 21/05/13 01:55 AM Share Posted 21/05/13 01:55 AM Ralph, I think you are on the wrong track, I read it as he has measured fuel pressure from the surge back to the tank and has 28 psi, OP correct me if I'm wrong, this pressure will not change with boost but may drop if the in tank pump can not keep up with the surge pumps.if the surge is splitting at 28 psi, you have shi77y workmanship or materials Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 9d Gender: Male Location: Perth Posted 21/05/13 01:58 AM Share Posted 21/05/13 01:58 AM Ratter, you may be right, OP measure the pressure when the car is on boost (or pressurize the reg to boost pressure and see what your getting) At the end of the day, your tanks are bulging because they cannot handle the system pressure, so you either need to reduce the system pressure (which you cannot do) or reduce the pressure the tank is exposed to. Link to comment Share on other sites More sharing options...
Jesse Williams_49219 Member 26 Member For: 12y 9m 21d Posted 21/05/13 02:02 AM Author Share Posted 21/05/13 02:02 AM But going backk to my original post, the last time (only time I remember) it happened AFTER I filled tobthe brim.Prior to that, I've been idling, boosting and driving around for weeks unaffected? Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 9d Gender: Male Location: Perth Posted 21/05/13 02:04 AM Share Posted 21/05/13 02:04 AM full tank/more pressure in return. Check your fuel tank ventilation system Link to comment Share on other sites More sharing options...
Jesse Williams_49219 Member 26 Member For: 12y 9m 21d Posted 21/05/13 02:16 AM Author Share Posted 21/05/13 02:16 AM There is another thing I noticed prior to my welds popping...When I filled it to the brim, it would dump a heap of fuel from somewhere around the diff.Could this be related? It doesn't always pop welds on a full tank, but always does leak. Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 9d Gender: Male Location: Perth Posted 21/05/13 02:18 AM Share Posted 21/05/13 02:18 AM Check your fuel tank ventilation system Link to comment Share on other sites More sharing options...
Jesse Williams_49219 Member 26 Member For: 12y 9m 21d Posted 21/05/13 02:21 AM Author Share Posted 21/05/13 02:21 AM Ill have a suss as soon as I get it back together and can drive it on one of the hoists. Thanks for the advice Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 9m 7d Gender: Male Location: Brisbane Posted 21/05/13 03:17 AM Share Posted 21/05/13 03:17 AM Dumping fuel when you fill-up...yeah that's pretty normal. Link to comment Share on other sites More sharing options...
freeze_dk I am dissatisfied with my current employment situation Donating Members 8,610 Member For: 18y 4m 4d Gender: Male Posted 21/05/13 04:05 AM Share Posted 21/05/13 04:05 AM Check your fuel tank ventilation system Link to comment Share on other sites More sharing options...
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