Fuel system diagnostics

[whiskychaser]

http://www.knizefamily.net/minimopar/fuelsystem.html

Ignore the fuel pressures quoted as they are not right for E34s. And to get the pump to run without cranking you need to jumper the relay. Apart from that its a pretty handy article

[tim eh?]

http://www.knizefamily.net/minimopar/fuelsystem.html

Ignore the fuel pressures quoted as they are not right for E34s. And to get the pump to run without cranking you need to jumper the relay. Apart from that its a pretty handy article

nice one - perfect for people like me who know jacksquat! i think i have this problem as Rus suggested to me previously (also mentioned it here (http://www.bimmernut.com/forum/showthread.php?t=39677)...) ... maybe a common issue... the diaphram thing?

"Fuel Regulator Failures
Fuel regulators don't often fail, but if they do, it may result in low pressure. You can verify this by pinching off the fuel return line to see if the pressure rises. More often the diaphragm will develop a leak and while the fuel pressure is not effected, fuel finds its way into the vacuum lines causing any number of problems (usually MAP sensor related)."