Question about 1993 Nissan Pathfinder

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1993 nissan pathfinder turn's over but won't start. Checked spark plugs, used a fuel pressure gauge to test fuel injector it was ok cleaned and added water to the battery

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Check the fuel pump and filter. if thet are okay..then the ECM is shot and needs replaced.

Posted on May 02, 2010

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Hard to start when hot did what the book said but still not fix


You need to run a fuel pressure leak down test, the fuel pressure test port is on the engine in the pipe that sits over the fuel injectors and supplies them fuel. You will need to buy or borrow a fuel pressure test gauge. Hook up the gauge and turn the keu on, make sure you have no leak at the connection point of the fuel pressure test gauge, then shut the engine down, watch the gauge, the fuel fuel pressure should not drop more than about 3-5 PSI, if it goes down more than that you have a defective fuel pump.

Jul 31, 2016 | Cars & Trucks

1 Answer

2001 Nissan Pathfinder won't start, fuel pressure ok, spark plugs not firing


make sure you have fire at the coil if not there will be no fire to the plugs

Feb 08, 2013 | 2001 Nissan Pathfinder

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Nissan Pathfinder showing codes on the emmisions test here in Connecticut p0325 and p0302


Fault Codes 1. PO302 = Missfire on Cylinder 2- Injector could be leaking and causing hard start ( to confirm instead to put the fuel pressure under test to confirm,when just started cold having missfiring, switch engine off and remove spark plug to see whether spark plug 2 is wet with fuel ).
2. PO325 = knock sensor - check the Vacuum line which is above the front right tire on the rear side of the tire,where are small hose comes from charcoal canister up over the shock to the purge valve. That hose from the purge canister is connected to a metal hose and then the metal hose connected back to a rubber hose on the purge valve. As the metal hose gets rusted cause a leak by causing the injector 2 to missfire for a little time when warm started. Please check this first before you do anything else. Good luck.

Aug 18, 2012 | 1998 Nissan Pathfinder

2 Answers

I have a 1992 nissan sentra that failed the 15mph part of the smog test because of high Hc's and high NOx so what can i do to fix it.


get oxygen sensor checked,maybe get tune up see if engine is leaning off properly,could be air flow sensor,but needs sensors to be checked

Oct 30, 2009 | 1993 Nissan Sentra 4 Door

2 Answers

I have hyundai accent 2003. While driving the engine died. Checked fuses,ignition,fuel pump(don't know if the pressure is right),starter is starting ok.


#1. Scan for trouble codes. If any, record them and let us know which ones they are.
#2. Connect a fuel gauge to the fuel delivery line at the engine... try to start the engine while monitoring fuel pressure... if there is fuel pressure (approx 35 to 50 lbs), the problem is elsewhere.
If no fuel pressure, check fuel pump relay, fuse, wiring to fuel pump connector (power & ground - use 12volt test light). If power & ground are present, problem is the pump (fuel filter is attached to the fuel pump inside the tank).
#3. Check injectors for injector pulse, check ignition coils for spark to spark plugs.

Sep 06, 2009 | 2003 Hyundai Accent

2 Answers

Doesn't start


1. Test Fuses. Test both under hood power distribution center and the fuse panel under dash. This is done with a test light tool. The test light should illuminate on both sides of the fuse, if not the fuse has failed and needs to be replaced.
2.Testing Fuel Pressure Test for proper fuel pressure with a test gauge on the fuel rail, most throttle body injection cars (TBI) are between 13 psi and 17 psi. and most (DPI) direct port inject systems are between 40 psi and 55 psi. If no or little fuel pressure is observed and there is 12 volt power present the fuel pump, the fuel pump needs replacing.
3.Checking Timing Belt Test for compression by removing a spark plug and insert a compression gauge. Crank the engine over about 5 seconds the gauge should read between 125 psi and 165 psi, if no compression is observed remove front engine cover to inspect timing belt or chain. Crank engine to observe cam rotation, if the cam does not rotate the timing belt or chain has failed. (note: if the timing belt drives the water pump it is best to replace the water pump at this time)
4.Test for Injector Pulse Remove injector connector to insert injector test light (node) or volt meter. Observe light flash or gauge pulse while cranking. If light/voltmeter doesn't respond, an ignition distributor/crank angle sensor (CKS) or an ignition module is most likely your problem.
5.Test for Ignition Spark Remove spark plug wire, insert an extra spark plug into end of wire, rest spark plug next to a ground source then crank engine. You should observe a blue spark between the spark plug gap and ground source. If no spark is observed, an ignition coil, ignition rotor or spark plug wires might have failed. (always keep hands away from engine when cranking)

Jun 16, 2008 | 2000 Nissan Quest

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