4G92P jerking

[jebatdex]

Hi sifus

I can feel the small jerking especially when cruising at low speed (40-60kmh). I have replaced cable plug and distributor, but problem persists. Can anyone suggest what should I do next? Spark plug is relatively new.

 

[Izso]

what sort of jerking?

 

[jebatdex]

How do I say it.. jerking, not vibrating... small jerking like the engine is lack of fuel/iginition..

 

[pac_jb]

Try checking your fuel pressure and airflow sensor

 

[jebatdex]

Try checking your fuel pressure and airflow sensor

How to check these two things? Can I DIY it?

 

[vr2turbo]

Fuel filter changed before?

 

[pac_jb]

How to check these two things? Can I DIY it?

For fuel pressure, you have to ask ur mechanic to check unless you have fuel pressure regulator and for the air flow , you can take out the maf sensor clean it with maf/ carb cleaner

 

[jebatdex]

Fuel filter changed before?

I think changed 2 years ago.

---------- Post added at 01:41 PM ---------- 6 hour anti-bump limit - Previous post was at 01:36 PM ----------

For fuel pressure, you have to ask ur mechanic to check unless you have fuel pressure regulator and for the air flow , you can take out the maf sensor clean it with maf/ carb cleaner

So, maybe I need to install the fuel regulator. From what I know, usually fuel regulator installed to those high performance car where they want to set for more fuel for more performance, and no effect if installed on normal car (correct me if im wrong).

For the maf sensor, I dont have the cleaner, so better just bring to mechanic and let him clean it, so dont have to buy the bottle of the cleaner. I never see the maf sensor cleaned during servicing before.

 

[vr2turbo]

I think changed 2 years ago.

2 years? Mileage? If 40k km need change already.....

 

[jebatdex]

2 years? Mileage? If 40k km need change already.....

I think already more than 40k.. Will replace and see how. Thanks.

 

[jebatdex]

I tried to look for CRC MAF Cleaner at Ace Hardware Bukit Jelutong last weekend, but they do not have it. Have some CRC Contact Cleaner, Degreaser, etc, but not MAF Cleaner. Is CRC MAF Cleaner is the only product that I can use to clean the MAF? Any others? Or maybe can only use pressurised air to remove dust?

 

[^pomen_GTR^]

contact cleaner also fits the purpose

 

[vr2turbo]

I tried to look for CRC MAF Cleaner at Ace Hardware Bukit Jelutong last weekend, but they do not have it. Have some CRC Contact Cleaner, Degreaser, etc, but not MAF Cleaner. Is CRC MAF Cleaner is the only product that I can use to clean the MAF? Any others? Or maybe can only use pressurised air to remove dust?

MAF sensor quite fragile, so not too strong if use pressurized air

 

[jebatdex]

contact cleaner also fits the purpose

Also, will try with contact cleaner. I see in Ace, quite expensive, 1 bottle RM80++ huhu :hmmmm:

---------- Post added at 10:08 AM ---------- 6 hour anti-bump limit - Previous post was at 10:08 AM ----------

MAF sensor quite fragile, so not too strong if use pressurized air

OK.. noted on that. Thanks

 

[^pomen_GTR^]

Also, will try with contact cleaner. I see in Ace, quite expensive, 1 bottle RM80++ huhu :hmmmm:

---------- Post added at 10:08 AM ---------- 6 hour anti-bump limit - Previous post was at 10:08 AM ----------



OK.. noted on that. Thanks

look in decent hardware shop...plenty of other brand of contact cleaner....

 

[vr2turbo]

Also, will try with contact cleaner. I see in Ace, quite expensive, 1 bottle RM80++ huhu :hmmmm:

---------- Post added at 10:08 AM ---------- 6 hour anti-bump limit - Previous post was at 10:08 AM ----------



OK.. noted on that. Thanks

What? RM80 per can for contact cleaner. Should be around RM15 to 20 can get dy.....

 

[avex00]

What? RM80 per can for contact cleaner. Should be around RM15 to 20 can get dy.....

Ace sells all imported stuffs, went thru a few oceans to come over..price doubled and best is..Made in the USA, hoping its quality after pouring in wont kill yr car...LMAO

 

[vr2turbo]

ACE mostly in shopping center, nice air con and environment for you to shop so all that is costed in. Just like that day I bought some fertilizer for a friend. At Aeon is like RM10 per kg but I got them at my hardware store at 4kg for RM20 only....

 

[gunnerzz]

anyone in melaka can just borrow my contact cleaner.....then belanja me roti canai...kawtim..
so far i only used it twice after buying it.

 

[vr2turbo]

anyone in melaka can just borrow my contact cleaner.....then belanja me roti canai...kawtim..
so far i only used it twice after buying it.

If I am in Melaka, I will join in your DIY also.....

 

[jebatdex]

So far, what I did:
- replace plug cable
- replace fuel filter
- clean MAF using CRC MAF Cleaner
- replace distributor with half cut one

Now, the problem is; when I press the acceleration pedal abruptly, is will be bad jerking. After a few moment, it will be normal again. For example, going into SmartTag lane with gear 2, after the toll, start to accelerate, then jerking happened and back to normal after some time. If I want to avoid the jerking, need to accelerate/pick up speed very slowly, cannot be abruptly. Anyone has experienced this kind of problem? Maybe the halfcut distributor gives problem, but when I first installed it, no problem happened... :hmmmm::hmmmm::hmmmm: