Ford Fiesta 1.25 Problem Please Experts take a look :)

driftwow

Hello all, i have ford fiesta 1.25 44kw 2008.Manual. and i have problem that trying to solve for a while but not luck. Problem is whenever i touch gas padel engine kicks/jerks and when i release pedal again kicks/jerks this happens
in any gear at any speed, but when adding gas it happens only from 0 point of gas pedal i mean when i release totally pedal and add gas then happens, if i like holding half gas and add then gas it wont happen
(" I guess thats importn") and when release gas it happens at any point its not importn if is full gas or on half.

So far i chage this:
Spark Plugs
Spark Wires
Coil
Down Engine Mount
Heres videos of engine movement:
youtube.com/watch?v=LJXlmaULvFc
youtube.com/watch?v=nZNePK30Ypc

Car has TNG but this happened before installing TNG, i thought maybe injectors was drty and when installing tng this would fix problem but it was same.this problems happens same as tng and on gas.

I hear on some forum that guy had same problem and it was transmission oil but i think his car was automatic, mine is manual, maybe oil could cause this or not?

also i order new throttle body, mine was cleaned but i ordered new one but i didnt install it still, i try running car without O2 Sensor and lambasonda sensor but it was same.

Can anyone PLEASE suggest me what could this be. i went to many mechanics in my town but they all said liek havu change sparks, coils, wires and

when i say i changed all they dont know what else could be.

reddwarf2002

Throttle body could cause this issue I reckon. Other suspects are EGR valve if it has one, and also PCV valve could be faulty. I think it is unmetered air/(or lack of) coming into the engine which is causing this issue.


EDIT: What was the conditions of the plugs?

driftwow

Thanks for your reply.
I have bought original plugs i think its motocraft i had same problem, then i again bought denso plugs just to see are plugs good but problem was same.

Aint EGR valve only on disels?

reddwarf2002

driftwow wrote: »

Thanks for your reply.
I have bought original plugs i think its motocraft i had same problem, then i again bought denso plugs just to see are plugs good but problem was same.

Aint EGR valve only on disels?

Petrol cars have them too - but your Fiesta might not have it but check anyway. What was the condition of your old plugs- what colour were they?

driftwow

heres pics how they look:
img.techpowerup.org/181209/capture053-20181209.jpg
img.techpowerup.org/181209/capture054-20181209.jpg
img.techpowerup.org/181209/capture055-20181209.jpg

System

Those plugs look text book perfect so it isn't running lean or rich, it is running where it should be.

driftwow

reddwarf2002 wrote: »

Throttle body could cause this issue I reckon. Other suspects are EGR valve if it has one, and also PCV valve could be faulty. I think it is unmetered air/(or lack of) coming into the engine which is causing this issue.


EDIT: What was the conditions of the plugs?

Tarambor wrote: »

Those plugs look text book perfect so it isn't running lean or rich, it is running where it should be.

What is ur suggestions?

GunJack

or...it could be the throttle pedal itself or mass airflow sensor...throttle pedal is an electric one and could be deteriorating on the circuit tracks in it/

angrycrow

That is quite a lot of engine movement. Which mount have you changed. Have a look at the lower mount which goes from the back of the engine to the subframe. That sort of movement would be consistent with the flexible Bush in the mount having failed.

diamond_dave

Agree with you about the engine mount - had the exact same on an old clio. The lower linkage was shot and the engine rocked back and forth. Don't know whether yours is the same but that would be my first check.

driftwow

diamond_dave wrote: »

Agree with you about the engine mount - had the exact same on an old clio. The lower linkage was shot and the engine rocked back and forth. Don't know whether yours is the same but that would be my first check.

I have changed only lower down mount check pic:

sc01.alicdn.com/kf/HTB189I8FFXXXXcEapXXq6xXFXXXv/202665723/HTB189I8FFXXXXcEapXXq6xXFXXXv.jpg

Mecahnics told me those 2 monuts dont need to be changed coz they can only couse vibrations.. but not sure ... ?