DOES YOUR CAR JERK?

So many things can make an engine cut off power when you need more power from the engine.

You said you've replaced the fuel pump, nozzles and spark plugs yet no improvement.

find solution to a problem first thing is observation of the problem.

Since this happens only when you speed up to 80 - 100km and above what it means is it happens when much power has been drawn from the engine and more power still needed.

Now what are those factors/components responsible for helping the engine push out more power with increased RPM or workload ie components that adjust with higher pressure or RPM?

Fuel pump, Nozzles, Throttle body, air filter, engine oil, coil, pressure vaccum, blocked exhust, MAF etc.

Now on this case, did you take time to read the value of your Air : Fuel Ratio?

This value is suppose to be 16.5 (air) : 1 (petrol).

If your MAF is not good or air filter is blocked by dirts and this value becomes less due to engine suffocation as result of the blockage the engine will be cutting of power when you need it more.

For fuel pump if its only the small pump inside the case you changed, especially with inferior new one you will still be having this case. Fuel Pump is better changed complete so you will be sure the vaccum and air pressure lines inside the chamber of the casing has not been altered because those are the things that produce the pressure needed to pump fuel out from the tank.

Engine oil on its own contribute. The weaker the oil in the engine the less freely the engine components move.

Coil on its own behave funny at times.

Some coils especially new ones when they get hot their performance drops.

For throttle body, blockages, dirts and electrical malfunction can cause that too.

Most time we make mistake of opening that butterfly on the throttle body manually in process of cleaning it. Once you do this you have altered opening and closing allignment of that butterfly and it may not be opening or closing well.

Another important factor is confirm your exhust is not blocked.

Most important did you scan the car and what are the error codes you got from the scan?

These are silent areas our minds hardly go to when we notice some malfunctions in our vehicles.

Lets be more observant so our minds, body and soul will always communicate with our vehicles.

Thanks and Happy Weekend to you all.

23rd September, 2023.

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