View Full Version : e30 fuel pressure?

06-24-2009, 10:58 PM
i'm trying to find out the fuel pressure for my e30. any one knows?

06-25-2009, 01:29 AM
i belive your regulator is set to 2.5 bars

06-25-2009, 10:19 AM
depends on the engine, mine is 3.0(44psi). Some engines are 2.5bar(37psi).

If your pressure is low, make sure its not your pump. You can check your pump volume by running a hose from your FPR to a measuring container(or any bucket and measure volume after) of at leat 2L. Run the hose then run the fuel pump by jumping pins 30 and 87 on your fuel pump relay socket. Run it for 30 seconds. The output volume for all models should be around 875 mL(30oz) in 30 seconds. If your flow is good, and your pressure is good, your injectors may be clogged.
Test pressure first, then get back to us.