Civic Injectors

[shehbaz5959]

AOA brothers as the winter is ON and so are the issues with my car

I have done everything from coils changing to fuel pump,TB cleaning and Changing to Clutch mechanism but there is still issue with my car and that is Late response and non smooth engine.

These days on morning start engine knocks quite loud and rpm fluctuates.TB recently cleaned with iacv valve but issue is there. silence also does phuk after few seconds regularly and it gives black smoke at rpm of 6000 plus.injectors were changed a year ago but issue remained the same that is car is less responsive. these days whats concerning me is knocking and non smooth engine at idle.......can any one tell me whats the size in cc of civic 2005 exi injectors??? the scanner shows the fuel injection of 2.6xxx is that ok or still injectors can be the issue. car also jerks while driving when engine is hot i mean the acceleration is jerky and less responsive. a mechanic yesterday reved the car and said injectors need to be changed as the might have bigger holes or may be of different cars its throwing more patrol and yes consumption is hardly 10km.litre in local drive.its manual car btw. at fuel rail the mechanic says pressure is ok without gauge but can faulty fuel pump cause knocking?

[shehbaz5959]

1st gear and slow speed car jerks and acceleration is non smooth. at high gears and hot engine jerks are hardly felt

[shehbaz5959]

lastly exhaust always gives some unburnt fuel sort of smell from the day one may be patrol or kacha

[khuram2703]

You didn't mentioned about the spark plugs.
Yes you should verify injectors should be of original spec. Check part nob from Honda dealer.

Do check compression of all cylinders.
Also check AFR.

Faulty fuel pump or spark plugs gives hesitation and minor missing jerks under high load i.e. when rev harder.

Knocking is not related to fuel pump.
Black smoke either shows rich AFR. Weak spark plugs, weak coils.
Some things you already verified.

[humayun.chughtai.7]

Seems like your car is running rich on fuel. What are the fuel trim readings on Long term & Short term ?
Seems like a faulty MAF/MAP sensor OR bad oxygen sensors !
Also replace your spark plugs.

[farrukhzeeshan]

at what rpm and gear it knocks. what is odo reading

have you ever changed fuel filter???

spark plug condition???

which city you are located in

[trouble_maker]

City your are based in?
Odo reading of car?
Cng installed?

[shehbaz5959]

i m using this car for 3 years and unburnt fuel and hesitation issue is never resolved permanently. after doing any of above mentioned things car responds well for few days then back to bad business again.

cng was installed but removed alonwith wiring coz of bad performance and low pickup and especially rpm up down.

car is on full petrol now. fuel pump changed with new and used ones approx five times and car became powerful but then again sluggish.

fuel filter was also changed alongwith pump but situation remain same.

yes spark plugs can be weak but issue persist with new spark plugs too(after few days of changing)... a famous electrician in rwp checked and said ooohh one coil is bad and changed it car became a horse then on 4th day again it took long gears and hard reving. spark plugs are brown and never had black deposit on them.No O2 sensor in the car.ODO is 125000 but issue is from 3 years back. MAP also changed few times as an experiment few times. the mechanic recently checked fuel pump through desi way and said its alright. Compression test was done at ENERCON in PWD area islamabad by a guy called Tyyab who used to work at f7 Enercon islamabad and he said its good. Black smoke only comes a at 6000 rpm. jerks and missing can be felt at 1st gear on constant foot car sorta jerks.

My car is driven mostly in 2nd or 3rd gear as i live in Bahria town rawalpindi coz of traffic on PWD road(Local people would be familiar) and it gives me 100 km in 13 ltr. on sudden acceleration car sort of bogs and respond in about 3 seconds with heavy sound

[shehbaz5959]

it knocks even on idle especially when dead cold engine is not smooth on idle either

[shehbaz5959]

spark plugs are brown from tips and white area on other side also has gone half brown

[ashbal]

Maf sensor is your issue...the things you mentionedall relates to maf sencor

[trouble_maker]

If car had cng that you need to check tps values idiots cng tunners mess it up to set idle on cng very easy fix

[shehbaz5959]

yes car had the CNG but i dont know where to find such educated mechanic who knows how to check TPS and all other stuff with gadgets.

[shehbaz5959]

following videos might help to understand the issue

[shehbaz5959]

[shehbaz5959]

koi jawab nahi?

[aliaamar1101]

This post was flagged by the community and is temporarily hidden.

[mrdeejay]

were you able to resolve hesitation issue?

[pwuser172314250542]

"Wa Alaikum Assalam! It sounds like you've done a lot to address the issues with your car, but some problems are still persisting. The knocking and rough idle, along with the black smoke, could be related to the fuel injectors. If the injectors are larger than what your Civic 2005 EXi requires, or if they're from a different car, they could be delivering too much fuel, leading to poor fuel economy and the issues you're describing. The factory size for Civic 2005 EXi injectors is around 240-270cc, so you might want to double-check that your injectors match this specification.
For Further Information Click Here.

[Hassan1991]

This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.