hi all.......

having this problem quite sometime.. while driving, car shuttering and feel like jerking when reach 2.5k rpm. after tht its normal.

wondering wht's the prob... anybody can help me???

what engine?

m empat puluh

put the car in ideal and test, same result. engine jerking at 2.5k rpm. but not much noticable. but when driving,...... kepala jadi panas.

Must be fuel & electrical component.

Electrical
Check Spark Plugs, Botol Susu (dunno m40 got or not),
Rotor Arm, Fuel Pump Relay, Alternator, Battery

Fuel
Fuel Pump, Injectors, Fuel Filter, Fuel Regulator

thanks highwaystar...

OMG so much to check.

btw, wht is botol susu? u mean a coil?

datsunnismo wrote:

thanks highwaystar... OMG so much to check. btw, wht is botol susu? u mean a coil?

yup..hehehee

Check in sequence

1. Spark Plug and Plug Cable if okay then skip to
2. Rotor Arm normally worn out if okay skip to
3. Botol Susu (when engine running this should be warm but if extremely hot than change) if okay skip to
4. Fuel Pump relay - it get spoilt over the years
5. Alternator and Battery - This you should check at battery shop they have ampere meter.

If all okay
go check fuel mechanism
1. Fuel Filter - when was the last time you change?
2. Fuel regulator - clog?
2. Fuel pump - cukup pressure tak?


Good luck!

sorry to introject, what's the "botol susu"? helpful checklist though.

edit: just realised it was mentioned in the previous post.

check spark plug and make sure ur using the correct ones. Fuel filter is very cheap to change if u never change it before

hi highwaystar n chriseunos. thanks for the inputs.....

Spark plug: just change to used one. from my old engine (m40 also). but it lLOOKS ok. but was be with tht old engine for 8 months... (pls advic on this..)

Last change was 5 months back. after tht there was one time the car was dead at road side due to empty fuel.

will follow h/star step by step checking...

Correction:-

hi highwaystar n chriseunos. thanks for the inputs.....

Spark plug: just change to used one. from my old engine (m40 also). but it lLOOKS ok. but was be with tht old engine for 8 months... (pls advic on this..)


FUEL PUMP
Last change was 5 months back. after tht there was one time the car was dead at road side due to empty fuel.

will follow h/star step by step checking...

the fuel pump is new or old? how about fuel filter?

do check the rotors as well.

If in doubt, change the spark plugs, it's not that expensive and after 8 months, I'm sure it could use replacing, plus it will help cross off one possible factor.

[b]alamak silap lagi...
Correction:-

hi highwaystar n chriseunos. thanks for the inputs.....

Spark plug: just change to used one. from my old engine (m40 also). but it lLOOKS ok. but was be with tht old engine for 8 months... (pls advic on this..)


FUEL FILTER
Last change was 5 months back. after tht there was one time the car was dead at road side due to empty fuel.

will follow h/star step by step checking...

will try to change the fuel filter and spark plug at1st place.

thanks all

Fuel filter check lagi please

You said fuel empty? maybe dust and particles and also karat tangki minyak
dan naik dan block your fuel filter. PLEASE CHANGE NEW ONE

Spark Plugs jangan lah pakai yang USE punya, tukar yang baru also.
Bosch Super 4 satu kotak 38 ringgit jer x2 balance 2 biji.

Good luck