torres89:
selfish Nigerians

no one willing to accept another man's view

most people kept shouting swirl valve

well did any of you bother to read on the principle of compression and engine vacuum

let's stop being parts changers

what kind of mechanic looks up the internet for solutions

that's a very dull mechanic and I will say that anywhere.

owing to the fact that similar symptoms on two different vehicles will never or might not point out the main culprit.

checking the net should be very last resort.

only check the net for rare vehicles with silly cases.. not this easy one

the main problem here is this :

most peeps don't even understand the principle of pressure or engine compression I doubt if most of you guys understand the working principle of an engine

that's why most peeps here have a pile of return jobs
u even see cars lined up in their garage for as long as a year.
just because of their shallow knowledge on diagnosis

as for those of u who recommend the mechanic work on the engine, please kindly Access YouTube and watch videos on MRO facilities, then u will know y local mechanics shouldn't open your engine

am tempted to mention so called big names here who have a very shallow knowledge on diagnosis and can't tackle complex issues .
but I won't
and no one should force me too

cause have being to their garage and studied their work ethics

iin fact let me just stop

honmusa is the best

chukel:
did you actually read this before posting. You just made a caricature of your self. I numbered your goofs. 1. What is Internet meant for and why is ur oga even advertising his feat here on the Internet. The number 1 bolded shows you were sent.
2. Where will you read the principle of compression and engine vacuum if not on the Internet. You are really not smart.
3.you still referred us to the Internet to watch youtube. What are you even saying.
4. You finally exposed yourself. Like I said earlier, you are not smart.
If you noticed along the line, poster said misfire was intermittent. He said loss of compression is responsible for misfire. Is loss of compression intermittent too? Meanwhile, the symptom that brought the car to the workshop was constant. Op, just listen to other people's input. No one is an island of knowledge. Overseas, when intermittent issues are brought to the technician, they try to simulate the problem or probable cause of the problem to produce the presenting symptom. Only cylinder 1 misfire will not make that car go into limp mode. I have an infiniti Qx4 2002 that has cylinder 1 misfire. I'm the only one that knows that cos I scanned it. You can only notice that subtly on idle.

chukel:
did you actually read this before posting. You just made a caricature of your self. I numbered your goofs. 1. What is Internet meant for and why is ur oga even advertising his feat here on the Internet. The number 1 bolded shows you were sent.
2. Where will you read the principle of compression and engine vacuum if not on the Internet. You are really not smart.
3.you still referred us to the Internet to watch youtube. What are you even saying.
4. You finally exposed yourself. Like I said earlier, you are not smart.
If you noticed along the line, poster said misfire was intermittent. He said loss of compression is responsible for misfire. Is loss of compression intermittent too? Meanwhile, the symptom that brought the car to the workshop was constant. Op, just listen to other people's input. No one is an island of knowledge. Overseas, when intermittent issues are brought to the technician, they try to simulate the problem or probable cause of the problem to produce the presenting symptom. Only cylinder 1 misfire will not make that car go into limp mode. I have an infiniti Qx4 2002 that has cylinder 1 misfire. I'm the only one that knows that cos I scanned it. You can only notice that subtly on idle.

kingreign:
:owherw have I been all these while?



Well, Just passing by in my lowely C230 kompressor sports.

torres89:


you don't Know me really

so let me just keep it calm

probably I was sent to expose some low tech guys that claim what there are not.

did I learn about compression from the net

hell nooooo , I spent a whole year studying mechanical courses in the four walls of distinguished environment.

I also furthered my knowledge practically with top engineering companies.

so have seen the true definition of compression not just theoretically but also in practice.
not just in cars also. but big and expensive equipment.

so what's that thing u said about the internet again

if I need to sort for information I know where to look , I know where to go.

don't get me wrong, am not undermining the capabilities of the internet.

but if u have ever being into complex engineering problems , u would know the internet isn't the best place to look.

case 1
my former boss and I were once faced with a problem of a factory compressor. very expensive equipment to maintain

plus it comes with a whole load of sensors and actuators plus wiring diagram

that day I actually learnt how terrible the internet could be.

case 2

few months ago I worked at someone's company.

and he kept on preaching to me on how to lookup the internet for solutions, like I don't know how to press my phone.
well that guy has the record of the most unfinished jobs have ever seen. well since the internet is his bedrock. I can't be any less surprised

case 3

when building my robot.... how did the internet help me and my team lol I don't even wanna narrate that.

my point is this ; the internet is only good for diy. when it comes to real troubleshooting, u need not practical experience alone. but the theory and principle of operation of the system or unit.

how do u fix a cylinder that is worn out

and what makes u think one cylinder can't cause a serious misfire. that can make the car go into limp mode

have u designed an engine before or do u know the calculations involved in engine design

the white man created that thing with a lot of calculations, and u just despise his work like u are the next Albert Einstein

instead of u to judge based on fact u are drawing conclusion based on ,what we know could be an error code.

am always a learner , i like to learn and see things in a practical and logical manner.

so until u bring me a solid prove, that won't violate any logical and engineering principle, Oga u have said nothing

and as for calling my Oga honmusa

well am deeply honoured

without prejudice...

peace.

honmusa:

I still have hundreds and hundreds of case study to update later that will reveal different diagnoses technique used ,equipment used ,and the thought process . I am not leaving yet, this is just the first step, I can assure you that this thread will hit 1000 pages very soon and if you have problem with that I will advice you to get busy ,help somebody cos therein is your fulfilment and stop being the sign post for other people that are providing help ,be the help itself so that this world can be a better place .
in autologic we don't settle for status quo,we in always in pursuits of excellence and CSI (continuous service improvement) and we welcome novel idea aligned with our mission statement and our target market is people with like mindset .unfortunate excellence is not a typical Nigeria culture and so it will be difficult to get everyone acceptance around here include people like you .
Finally ,We are passionate about what we do cos that is where we get our fulfilment hence will be difficult for us to stop showcasing and flouting what is giving us the leverage .

NanaF:


One red flag is to stay away from people who speak plenty grammar like this. I really hope nobody actually takes their car to you here. My car is still suffering from your cut and patch work.

chukel:
you sound well versed but all I can deduce from your whole write up is that you have very poor research capabilities. I may be wrong. Bottom line of what op said is that cylinder 4 misfire made that ride go into limp mode. Simulate cylinder 4 misfire on same vehicle and see if it will go into limp mode. That's practical enough.

torres89:


ok

have you written a program before

so let's simulate your senerio :

i take out the spark plug from cylinder four , drive it around the block for 20 mins , no limp mode

u are happy. your test was right.

but !!!

let's consider time

time is an essential factor when it comes to maintenance of equipment.

what will happen if I drive that car round Lagos without a spark plug in cylinder 4 , for a whole day or more

will it go into limp mode

now let's program our ECU

x= engine power which is = torque

torque must not be less than or equal to let's say 200watts at a certain rpm or load condition

if torque falls below specified value for 20 mins or 1 hour

do nothing.

if x is still below specified for more than an 1 hour. turn on MIL

if x is still below specified for more than whatever.

fix gear permanently on 2 ( the essence of doing this is to prevent the engine from knocking)

I hope u can understand this simple algorithm.

now I even understand the main problem of mechanics here

they don't understand programming and how codes work

simply put , they can't program.

but no one is an island of knowledge.

thanks for teaching me this.

chukel:
I understand programing algorithm very well. But u and I still don't know if what you have written is the sequence. It may, it may not. Since we are not the programmers, the factory service manual is there to guide. Thanks too. We all are learning.

Costee:
Hapless thread It's just getting mired and mired into what the laymen contributors are complaining about: that is, rather pedantic.

chukel:
chai. This grammar strong. Please break it down. I'm just a demeanor.

diportivo:
I will be damned if its not a Nissan that I av owned for four years now

see as grammar wan wound me

wen I was mentioned on this thread I was asked to remove cylinder4 plug wire and drive round the block to see if there's a misfire

I replied that iv had a misfire for months and iv been driving the car that way

weeks later I was at gazzuzz's and we played around with a scanner

scan revealed misfire on cylinder 4....coincidentally

is the car in limp mode yet?

maybe tmr....and iv not fixed d misfire yet

where is the time?

maybe I will wen it goes into "limb" mode

then again,iv had cam issues...where the cam was starved of oil for almost a year

iv not changed cam and dat happened like 3years ago

one size doesn't fit all....sooner we realise the better

by the time this thread hits 1000 pages I might av angrily changed my engine cos its hard starting in the morning

mayor2013:


"Limp mode"

GAZZUZZ:

diportivo:
I will be damned if its not a Nissan that I av owned for four years now

see as grammar wan wound me

wen I was mentioned on this thread I was asked to remove cylinder4 plug wire and drive round the block to see if there's a misfire

I replied that iv had a misfire for months and iv been driving the car that way

weeks later I was at gazzuzz's and we played around with a scanner

scan revealed misfire on cylinder 4....coincidentally

is the car in limp mode yet?

maybe tmr....and iv not fixed d misfire yet

where is the time?

maybe I will wen it goes into "limb" mode

then again,iv had cam issues...where the cam was starved of oil for almost a year

iv not changed cam and dat happened like 3years ago

one size doesn't fit all....sooner we realise the better

by the time this thread hits 1000 pages I might av angrily changed my engine cos its hard starting in the morning

GAZZUZZ:
This is cartalk, and we are talking.

One of the most sensitive engine systems I know of is the peugeout 607. Its very quick to enter limp mode at any slight deviation from its factory settings.

The 607 will still rev far above 2000rpm if stuck in limp mode.

Now we are talking NISSAN, and a specific model, the 2003 pathfinder.

I will continue when I leave ladipo....

NanaF:


One red flag is to stay away from people who speak plenty grammar like this. I really hope nobody actually takes their car to you here. My car is still suffering from your cut and patch work.

mayor2013:


"Limp mode"

NgcoboP:


I am glad I made peace with you.... See research!

autologic:
Case 3

Car model :Honda accord 2009

Customer complaint: Exhaust is emitting black smoke with confirmed high fuel consumption


Scope of Job Resolution :Fix for the black smoke and resolution of high fuel consumption

N.B:what makes this case a peculiar one is that there is no DTC code registered on the PCM management system !