aoist

Ya, I know about the 6-second fuel signal after each start. I've actually measured the fuel pump voltage at the connector and noticed that it was ~10.7v, so believing that it might be due to lower voltage not turning on the pump hard enough, I connected a 100ah lithium battery directly to the pump to no avail. I believe there is enough suction created though the injectors to pull the fuel up past the leak once the rpm gets up there with the starting fluid. I'll know eventually once I change the hose or just put some Teflon tape on the stem. Do you think the tape will deteriorate on contact with fuel? Just bought some yellow teflon tape. Easy way first.

Good suggestion there, Slartibartfast, about the fuel pressure test, although I'm quite certain that it's not starting due to lack of fuel. What other mechanism is there besides the regulator, which I replaced. I doubt a leaky injector is a problem. Even if, a leak wouldn't be so big that it wouldn't build up pressure, which it doesn't when the problem occurs. That's why I have to use a starting fluid. Because of the incline aspect of the problem, I'm starting to suspect loose/worn quick connector fittings inside the tank. It must be such that, when in an incline, the quick connector shifts enough to let air into the line. Only this scenario can explain why it doesn't build up pressure with a new pump, and why only a huge suction from the intake will draw up the fuel past the air leak. As to the weird sound, it could be the dried out injectors because it quits after a few seconds. Also because the sound never occurs without the fuel problem. I'm going to replace the fuel sending assembly. Thanks for the feedback.

My 2002 pathfinder SE 4x4 has a very strange starting problem. So far I have replaced the fuel pump, fuel pressure regulator, fuel filter and installed a check valve. Here is what happens, I start the car, and it won't fire up, sometimes if I crank it long enough, 10 seconds for longer several times, it'll fire up, and other times it won't, no matter how much it's cranked. And when this happens, I notice that the car has been parked in an incline, with the front of the car uphill. Every time the problem occurs, car is found this inclined position. But parking in this front up incline position doesn't always produce the problem, I have experimented. And the degree of incline doesn't have to be much, just a few degrees. I have so far, maybe 10 to 15 times, been able to start the car with starting fluid. But there's a further mystery which I can't figure out. Every time I start it with the starting fluid, it makes a sustained very loud noise, maybe 3 to 5 seconds, of a very high-pitched metallic rubbing sound. This sound never happens when not started with the starting fluid. Not starting problem can occur as short as 1.5 hours if parked in an incline. It actually happened at a Walmart. Any hints or suggestions will be appreciated. Thanks

Yes, I think I figured it out, a failing fuel check valve inside the gas tank. I'm just going to install a check valve as closest to the gas tank as I possibly can. Maybe a simple $10 remedy, we'll see.

My 2002 pathfinder has a peculiar problem , if it is not started within a few days it won't start. I have to pull out the air filter and squirt in some starting fluid to start it. Any clues as to the cause of this? Clogged fuel filter? Or? Thanks much Tom

My engine worms up to normal temp in about 3 min, but I have no heat until about 20 min. Even then the heat is not very warm. What could be the most likely cause? Thank you for any and all suggestions?

I have a 2003 pathfinder with a moderate oil leak under the engine somewhere. So here is the question Would rear main seal leak continue after sitting over night. It would seem to me like if the engine is not running, there shouldn’t 'be a leak. Am I wrong? Thanks

My car won't increase or maintain idle rpm when under load. It keeps trying to decrease rpm till it nearly dies then jumps back up just to do it again in intermittent fashion. If I press on the accelerator pedal just a little, it'll like snap back to normal rpm. So I'm suspecting that what ever device that is supposed to increase rpm when the car is under load, D or R or even the air conditioner is not doing it's job. Anyone know what scheme/device is used on a 2003 pathfinder LX?

The driver side window on my 2003 pathfinder won't stay closed. Everytime, It goes up then comes part way down, so I have to turn the ignition off while holding the switch in closing position in in order to fully close the window ANNOYING!!. Anybody know a fix for this like relearning or is this a case of messed up hardware? Thanks

@Sjackson2 Ya that could be a possibility because I have the door ajar red led alert. Any Suggestions on how to check those door switches? Thanks

Hi all I have a 2003 Pathfinder that beeps with the key in the ACC position of the ignition switch. Anybody know how to turn off the beeping? Thanks Tom