Question about 2001 Nissan Frontier Crew Cab
100,000 miles. V6 4x4. Ran fine, backing out of driveway, truck stalled. No sputter or rough start, no check engine light. Just died. Will not restart. Tries to crank over (sounds like its starting but not getting any fuel). Replaced Spark plugs and wires (they needed to be done anyways), and replaced air filter. Wont start, same problem. When key is turned to on I CAN hear the fuel pump start and run for 5 seconds as normal. Going to replace fuel filter. Gas tank is full, wondering if I need to empty gas tank in order to replace filter? (haynes manual doesnt address whether the gas should be emptied or not it just says how to depressurize the system) Can I clamp off the rubber end to prevent fuel from spilling? If so what would I clamp it off with?
Hooking up a fuel pressure gauge an seeing if the fuel pump is in fact charging the fuel system . Checking the electrical circuit , fuel pump relay , Instead of guessing as to what the problem is , Test ,Test an test . If you do not know how to do automotive electrical testing there are videos on youtube . Basic Electricity for Service Techs Ohm law Current Flow Opens Shorts When you turn the key on ,not start , the engine computer will energize the fuel pump for a few seconds to prime the system . The fuel pump will not be turned on again if the engine computer does not see a signal from the crankshaft position sensor . Instead of being fixated on the fuel , check for spark . Also find a wiring diagram at http://www.bbbind.com/free_tsb.html Do you know what a wiring diagram is , how to read one ? How to Use Multimeter to Troubleshoot Common Problems
Repairing automobiles the correct way involves years of training , an testing . Fuel Pressure Test
Posted on Mar 21, 2017
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Posted on Jan 02, 2017
it sounds like the injectors are not opening up man.. replace the injectores and this should fix your problem..good luck keith....
Posted on Mar 21, 2009
Backfiring after warming up can be from many things.
One that comes to mind is carbon deposits on valves, causing them to not close properly. The carbon deposits would also heat up and then ignite air/fuel mixtures before the spark plug can fire.
Or you would have hot exhaust gasses leaking back into the cylinder on intake and that would ignite the fuel.
Tac gauge fluctuating, and engine running rough on acceleration could be a vacuum leak, do you hear a hissing sound when the engine is running? listen closely under the hood. If you have a vacuum leak you would lose power and your RPM would fluctuate oddly. As for the backfire however, there are probably more than just one problem. Its hard to say for sure.
So please, more details, noises you hear, when exactly everything happens etc.
What speed and RPM the engine begins to bog down at, does it stall? What range is ur tac fluctuating at? anything you can think of, throw it on there.
Hope this helps you
Posted on May 10, 2009
why did you replace the filter and pump?
did something get in the fuel?
check the injectors and spark plugs
in my car someone put flour in the fuel tank and the fuel pump, pumped it into the injectors where it cloged them up
so i had to replace injectors pump filter now it is good
Posted on Dec 31, 2009
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