Fuel Pump Testing

[bigtime]

My 1999 Q45T will not start. Seems like it is not getting any fuel. How do I check the fuel pressure and operation of the fuel pump? I had the same problem with my 1994 Q45. I could hear the fuel pump working but it had no pressure.

[pito11213]

I guess to check if there is fuel being pumped you could disconnect the fuel lines on the fuel filter and see if the fuel flows through.

[Q45tech]

Almost every Nissan shop has a fuel pressure tester, which they tee into the after fuel fiter rubber fuel hose. 34 psi idle, 43 psi upon acceleration.

Study the snapon/mac fuel tester kit they are all long enough to tape the gauge to the windshield for drive testing.

[bigtime]

I thought the non starting was due to flooding, I tried the flooded proceedure, but not the case. I tried and tried to crank it till the battery died. Next day I tried boosting it, still not cranking. So I decided to just disconnect the negative battery cable to reset the ecu. After a couple of hours it cranked. I let it run for about 45 minutes, turned it off, then tried to crank it but it would not. Next morning it would not crank again. I pulled the fuel supply line, it is getting fuel. So I reset the ecu again, and it it cranked again. This is fustrating. Any suggestions?

[greg_atlanta]

How old is the battery? Good idea to replace the battery every 3 years. Don't wait for it to die.