Yeah, be a sheep like 2thepoint and dont do it yourself, when you can spend your hard earned money paying someone else to do it for you!
And once he has spent over £300 on coil packs and plugs i suppose he could buy a new air flow meter too and if that doesn't cure it why not throw in a walbro fuel pump in case it is running lean (you never know you might have upgraded it one day anyway) still no better you could replace the dump valve cause it might be leaking and after that there's the fuel pressure regulator that might be faulty so just replace that too, or how about some new injectors as they could be blocked and not flowing enough when there is demand for fuel or the fuel filter, or even a collapsed 14 year old fuel line...... the list go's on and on, not to mention he has probably spent more than £35 in fuel trying all these things .Erm, a forum is for advice and help...all the advice and help I have had from this site has helped me ALOT and I havnt needed to take my car to a garage to pay someone else to do a job that I was capable of doing myself. And also the self satisfaction of doing it myself.
From what you have said Whistler33 it may be your coilpacks/spark plugs, easy to recondition yourself / replace. That's where i would start.
So now every missfire problem is due to coil packs? and every owner has a degree?We may as well not have a technical section then eh ??
I had the exact same problem, and the solution was as SIMPLE as changing the spark plugs, I reconditioned the coilpacks while I was there. Oh and yeah, am not a mechanic but my BEng in Aeronautical Engineering did come in handy to pick up a tool or two !!!! :crazy:
I can understand your point - but willy waving will get you nowhere.So now every missfire problem is due to coil packs? and every owner has a degree?
There should be a technical section..... and perhaps a GUESS section?
When you have built some of the fastest drag cars in Europe then you can tell me my job mate
How very true, if only more people would be logical like this, unfortunately on a weekly basis i am seeing cars that have been messed about with so much the original problem is almost impossible to see and is therefore going to cost and often already has cost the owner much more to put right.I can understand your point - but willy waving will get you nowhere.
In my experience with forums - and in fact life... I often fall back to what I have been taught by my good old mum "if you dont have anything positive to say - dont say anything at all"
All of the advice I have gotten off of this forum and others for my cars has been sound... but then I never go from the advice from one person, I get a general concensus from people that know their cars and have experienced the same faults. At the end of the day it is only advice and should be taken as mere suggestions rather than gospel - and so is therefore down to the owner of the vehicle to make their mind up as to what to do.
I see your (blunt) point 2thepoint but my advice from my first post was where I would start (process of elimination?), changing spark plugs or changing/refurbing the coilpacks would never damage an engine so what's the harm in doing these things first when they are often the problem that on many occasions a forum member has done then reported on the same thread that the problem was sorted with the advice/help of other forum members??From what you have said Whistler33 it may be your coilpacks/spark plugs, easy to recondition yourself / replace. That's where i would start.
You are partially right on the ignition issues but DANGEROUSLY wrong on the fuelling. FPR's and injectors do fail and old rubber fuel lines DO collapse internally, i have found all of these problems on Skylines as well as numerous other cars, this causes a lean mixture which in turn causes misfires and can lead to piston damage, i for one know that coil packs cause this problem but so do other issues and they are NOT as rare as you think.This happens every year 2thepoint, EVERY YEAR. The wether turns cold. Cars are overboosting. The ECU is used to the warmer air, and the ignition isnt set up for it. It's esentially the same as a breathing mod, and no, it wont be anything to do with the FPR, fuel lines, fuel pump, injectors etc; unless they happen to of replaced them coincidentally just before the problem arose. But then they would mention that, wouldnt they? just like they wold if they went to a garage.
In this case, the ECU needs to adjust for the better burn it's getting due to the colder air. Some cars simply do have crispy fried coilpacks, and there's no getting away from it. Either replace them or wind the ignition back till you can afford them. Of course, ECU reset, CHECK the plugs first, RECONDITION coilpacks (yes you can do this to a degree, and sometimes it DOES work, but it wont last) and problem solved.
Now, he could take it to a garage. But, then he has to find a REPUTABLE garage to start with. Then, £35? where on earth did you pluck that figure from!? Try somewhere like Abbey, GTart, Rising Sun, I think they are all around 100+ for an hour, and who says it will take an hour?
an ECU reset and checking the plugs costs nothing, checking the coils costs nothing, infact checking the AFM costs nothing. It's not guessing either, its a process of elimination, something any garage will use aswell.