Trouble shooting nissan ffrontier sparks misfiring

A random/multiple misfire in a 2008 Saturn Vue can be caused by a variety of issues. Some common causes of misfires include:

1. Spark plugs or ignition coils: Worn or fouled spark plugs or faulty ignition coils can cause a misfire. These components should be checked and replaced if necessary.
2. Fuel system: A clogged fuel injector or a problem with the fuel pump can cause a misfire. The fuel pressure should be checked and any clogged injectors should be cleaned or replaced.
3. Vacuum leaks: Leaks in the vacuum system can cause a misfire. These leaks should be located and repaired.
4. Exhaust system: A clogged catalytic converter or a problem with the exhaust manifold can cause a misfire. These components should be inspected and any necessary repairs should be made.
5. Engine control module (ECM): A problem with the ECM can cause a misfire. The ECM should be checked and reprogrammed if necessary.

It's recommended to have the vehicle scanned with a diagnostic scanner to retrieve the trouble codes and determine the source of the problem. Once the codes are retrieved, it would give a better idea of what component is causing the misfire.
It's always recommended that you take your vehicle to a professional mechanic to diagnose and fix the problem, as these are complex systems and require specialized knowledge and equipment to fix.

Error Code P1441 is defined as EVAP System Flow During Non-Purge Condition. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as GM (Chevrolet/GMC), Nissan, Pontiac

Error Code P1441 is defined as EVAP System Flow During Non-Purge Condition. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as GM (Chevrolet/GMC), Nissan, Pontiac

P0440 is an OBD-II generic code that the engine control module (ECM) has detected a leak in the fuel tank vapor system or a vapor pressure sensor has malfunctioned.

p0313 O2 sesor

P0300 Random Misfire Detected Code

Read more at: https://www.obd-codes.com

Have you ever replaced the spark plug wires and the distributor cap and rotor? If not then do that and pull a spark plug and see if the electrodes are worn out. I assume this is a very high mile vehicle due to the extreme age and it is a Ford.

The fault codes refer to misfires, P0300 is a random misfire ,anything from fuel injector problems , vacuum leaks , low fuel pressure ,clogged fuel filter . P0302 is a specific cylinder misfire same for P0303 ! # 2 an #3 cylinders . Spark plugs , plug wires , coils or coil , depending on make model an year vehicle an ignition system type ! Testing is the only way to find out the corrections needed . It takes a very good technician to trouble shoot these problems . Your best bet would be to take your vehicle to a qualified repair shop

ck for spark at the plug wire ck engine compression if compresion is goog and you have spark a the wire replace spark plug

How the computer determines a misfire is through a lagging effect in the crankshaft turning-when one cylinder is not producing power, the crankshaft doesn't turn as fast, and the computer senses it through the crankshaft sensor.
Misfires are usually a fuel problem, spark problem, or a low compression problem. Compare the spark at #4 with the other cylinders-all should have a blue, snapping spark. If good spark, check the spark plug -it might be defective. Compare the spark plug in #4 with the others. If it has a black sooty appearance, it is running rich-injector may be leaking. If the lower insulator on #4 is whiter than the other plugs, it is running lean, and the injector may be partially clogged, or not pulsing well.
If gas and spark is good, do an engine compression test. If #4 has low compression, it could be a valve problem, or worn piston rings, or a head gasket failure.

misfire, cylinder 2, P0302 , is the OBD DLC code.
you forgot to state the year, or country? making help , near impossible. but ....Ill try, in the generic.

1: low compresion (tool is called, a compressiong gauge)
2: bad spark to #2 (a spark tester)
3: bad injection (check coil for about 10ohms , listen for click,
then use a NOID lamp to see if injector is firing.
if its firing , then do a power balance test. on all 4.
that is how to do this. all EFI. OTTO cycle engine.

Is the spark plug like a dry carbon dark or a wet, oily dark? It could be a few different things causing it but the main things would be, in no particular order & depending on the type of darkened plug, your ECU may be faulty, a compromised head gasket, clogged air cleaner or an overly rich fuel.

My first guess would be a crank or cam sensor is disconnected.
Or damaged.
Have you checked the computer for trouble codes ?

P0302 is a misfire in cylinder #2. When was the last time you changed spark plugs? That's the most common cause of a misfire.