engine suddenly jerk

[mrevo]

Hi everyone, i'm driving wira 4G93T GSR engine. yesterday my car was suddenly jerk during driving. aAt those time the RPM is arround 2k to 2.5K. After that, it was happened quite often but it doesn't happened in idling time.
Is it a sympton of broken fuel pump? or ignition problems?
I opened the spark plugs but it looks normal, brown colour.
so, what is the problem actually? is it also come from my FICD that i installed?

 

[liz@rd]

probably u need to re-tune ur FICD , yes my FICD setting on my 93na also will run @ times , just go back to where u installed it then ask them 2 tune it again ...

 

[lonelylilpig]

B4 this i encountered this prob oso, check fuel pump check coil , check any other possibility still kenot detect. After that try exchange with frens ECU then ok D....
I don't will that work with your car as mine is not same engine as yours .......

 

[mrevo]

probably u need to re-tune ur FICD , yes my FICD setting on my 93na also will run @ times , just go back to where u installed it then ask them 2 tune it again ...

actualy,i,m using the FICD quite long..since a year.if this consequences come from FICD, it may occured since installation . Is that same prob happened to u last time?

 

[metalheads]

did u wash your engine bay recently?

your plugs might be wet. happen to my car before.

 

[mrevo]

did u wash your engine bay recently?

your plugs might be wet. happen to my car before.

I didn't washed my engine. No..my plug is in normal condition coz already checked.

Bump: Does anybody knows how to test the fuel pumps?

Bump: Does anybody knows how to test the fuel pumps?

Bump: Does anybody knows how to test the fuel pumps?

 

[PAHAM]

I think ur coil have a problm..already too old..need to change new...

 

[EGNINE]

i think u need MSD

 

[koMie]

just install PS...can settle yr prob bro....cheap n manual tune....

Bump: just install PS...can settle yr prob bro....cheap n manual tune....

 

[Turbomaster1]

the only way test fuel pump is pressure test....connect a pressure gauge in between the fuel filter and fuel rail......pressure should go up as you rev harder....off engine... it should stay for while....

jerking prob normally happens if got coil/ plug cable damage......injectors do not normally fail unless it has been unused for a while.....

engine tuning also can effect during acceleration....if got management....

cheers