My nissan primera 1992 model keeps jerking a fews seconds after starting the engine. i have replaced spark plugs and plugs wires, fuel filter, air filter and some peripheral stuffs, but it still the same story. what do i do?

Here are some potential causes and solutions for the loss of power when accelerating and going uphill in your Nissan Sylphy Bluebird:

• Replace the air filter if it's clogged with dirt. This allows more air into the engine for better combustion.
• The fuel pump may be failing, not providing enough fuel pressure. You'll need to test the pump pressure and replace it if necessary.
• Replace the fuel filter if it's restricted, allowing full fuel flow to the engine.
• Faulty spark plugs, bad ignition coil or faulty crank/cam sensors can cause misfiring and power loss. Check for error codes and inspect these components.
• A clogged catalytic converter or muffler can restrict exhaust flow, impairing engine performance. Inspect the exhaust system.
• Problems like worn clutches or torque converter failure can affect power delivery. Have the transmission inspected and serviced if needed.

The jerking when pressing the gas pedal could indicate an issue with the throttle body, dirty fuel injectors or transmission problems like worn mountings. I'd suggest having a mechanic inspect the engine and transmission completely to properly diagnose and resolve these driveability issues.

clean out the idle the idle valve on the inlet. remove and clean the unit. also replace the air filter and clean the maf/map sensor before starting engine after air filter changed as dirt from the air filter can coat the maf sensor and this will give a wrong reading to the ecu.

Could be the spark plug wires, the mass air flow sensor, the fuel pump, or the fuel filter. Many things to check. Please be more specific. The car starts and the motor runs for a few seconds? Thank you.

interesting, ricky ? could b anything. fuel filter needs changed, the fuel we use today is garbage, ethanol is bad for our older engines. add some of that new dirt to tank, something360. ??? also, maybe a wire connection is loose., or bad spark plug wires? something is missing its continuity , making the engine miss, not your transmission, u hope ? start with checking your battery conn., clean, tight, etc., replace plug wires, change spark plugs, maybe ? but your plug wires could b the problem. ??? think about it, engine starts ok, its when its running does the problem come up. you have fuel, you need spark, you also need clean air .......... change air filter....... pcv valve......egr valve ?? could b sticking ......you treat yourself good, yes? treat your engine good...whens last time the transmission fluid and filter was changed ??? that could also cause a miss, a surge......yes? i hope this helps you ricky, just use common sence, it always serves me well, good luck, ken

Fuel pump and filter are suspected, consider replacement.

fuel filter,spark plugs,coils,air filter,check battery and battery connection.

likely fuel pump, dirty MAF sesnor or distributor CMP sensor going. go here

http://groups.yahoo.com/group/villagerquest/

Please check first basic things Air filter Fuel filter Injector Spark plug All above fine So you have replace oxygen sensor which located in first cat start Regard

fuel pressure regulator

it sounds like the injectors are not opening up man.. replace the injectores and this should fix your problem..good luck keith....