Question about nissan almera, fuel does not register fuel accurately, why?

Question edited for clarity.
Question moved to model category.

Reset the security system and engine immobilizer. Connect a code reader scan tool as see what it shows.

https://www.google.com/search?q=2005+Nissan+Almera+reset+security

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The torque settings for a Nissan Almera QG16 engine can vary depending on the specific component or fastener you are referring to. However, I can provide you with some general torque specifications for common components in the engine. Please note that it's always recommended to consult the manufacturer's manual or a qualified mechanic for accurate and up-to-date torque specifications. Here are some approximate torque values for certain components:

1. Cylinder head bolts: 25-30 Nm (18-22 lb-ft) initial torque, followed by an additional 90-degree clockwise turn (angle tightening).
2. Main bearing cap bolts: 25-30 Nm (18-22 lb-ft).
3. Connecting rod bolts: 15-20 Nm (11-15 lb-ft).
4. Crankshaft pulley bolt: 140-160 Nm (103-118 lb-ft).
5. Camshaft sprocket bolt: 85-105 Nm (63-77 lb-ft).
6. Intake manifold bolts: 15-20 Nm (11-15 lb-ft).
7. Exhaust manifold nuts/bolts: 25-30 Nm (18-22 lb-ft).
8. Spark plugs: 15-20 Nm (11-15 lb-ft).

There could be several reasons why your Nissan Almera cranks but does not start. A weak or dead 12-volt battery is a common cause. You can look into it further and perform a battery voltage test to determine whether the starting problem is caused by the battery. Other potential causes include problems with the crank sensor, fuel delivery, or the immobilizer system. It may be best to have a mechanic diagnose the problem to determine the exact cause.

what a great question!
no year told, no country , no car told just raw engine
QG18 comes in many types QG18DD,,1999 to 04
QG18DE, 1999 to 2007 QG18DEN is the natural gas version?

lacking all key facts.
I go GENERIC (full bore)

the answer is super simple..
causes spark misfire. (and scanned PCM see P03xx errors DTC)

loss of engine horse power. and wasted fuel.
or engine dead. fully and no spark at ALL.

why worry it at all.??? if scans are clean this is it if CKP does not trip CKP errors DTC

must we guess all of these and if yes why?
and more,

The QG18DE is used in the following vehicles:

• 2000-2006 Nissan Sentra B15 and N16
• 2000-2005 Nissan Pulsar N16
• 1999-2002 Nissan Primera P11.144
• 2002-2007 Nissan Primera P12
• 2000-2006 Nissan Almera N16
• 2000-2006 Nissan Almera Tino
• 1999-2006 Nissan Primera
• 2000-2006 Nissan Expert
• 1998-2006 Nissan Avenir
• 1999-2005 Nissan Wingroad/AD van Y11
• 1999-2005 Nissan Bluebird Sylphy G10
• 1998-2004 Nissan Sunny B15
• every one sold in USA all scan easy as eating cherry pie !

the CKP and CMP sensors are the base line inputs for all spark and fuel injections and timing and timing advance of spark
if spark dies the PCM cuts all fueling dead( no crash&burns)

Fuel tank sender unit inside fuel tank
Most likely part of the fuel pump assy

FixYa isn't the right site to get that answer. You'd be best to check the UBER site and log in under the user id and password that you used to register.

Here is the video of How To Replace the fuel pump.
https://www.youtube.com/watch?v=TF-JnEzcseU

Code 345 means the cam sensor on bank two is not sending the correct signal to the engine computer. So no spark.
If you have replaced the sensor, the problem could be the cam or the wiring from the sensor to the computer.

hi i am not 100% sure but i think it is the P11 144 gearbox its used with the almera qg15de engine. i think it is also used in a primera and almera tino of the same years.

fuel pump problem?? possibly