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need some advice, r33 gts has just started missing when i stick my foot down in any gear, it will cruise fine but when i stick my foot down the power struggles to go down and just before the 5000rpm too , any suggestions?


thanks
 

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It could be a number of things, you could listen to all the random advice i'm sure you will be given, spend hours tying to find the fault, trying lots of different parts and still test driving it with all these ideas when it's still not running right.

or

You could take it to a garage that knows Skylines and £35 1 hour later your car will have had a full diagnostic and health check and you know will know the problem.

Worth checking for loose pipes tho.
 

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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!

I have a garage full of knackered Skyline engines/parts that i have had to put right due to advice followed from here so don't go preaching to me.

If £35 is a problem then you should not be driving a car that constantly needs considerably more than that in maintenance and fuel.
 

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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.
Cheers
 

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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.
Cheers
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 .
And the whole time he is doing this he is also doing all these test runs with a potentially piston killing problem..... (you CAN kill pistons with one problematic power run) will you be paying for his several thousand pound rebuild that's now required due to the wrong advice? I didn't think so.

Now you'll say try second hand parts to save money, but how do you know if they work properly too?? So you persuade your mate to let you strip the afore mentioned parts off their car to try on yours because he said his car "runs ok", but what if there is more than one fault - as there often is, but only now apparent as it is the pair of problems combined that is the issue - you will never know unless you try everything at once too??

Then there's the satisfaction??? for what exactly?? GUESSING?? perhaps you should play the lottery that week too. I wonder why mechanics have to spend 3 years training on a low wage then a further 2 or three years gaining ATA acreditation and even more years learning about specialist applications like Skylines if these cars can be fixed by following the above advice WHICH ARE ALL EXAMPLES THAT HAVE BEEN GIVEN ON VARIOUS THREADS HERE to fix this type of fault. So what if it was the throttle position switch that was at fault, i haven't seen that GUESS anywhere..... bloody expensive potentially engine damaging way to find that out don't you think? oh that's right you still haven't found that out but now you decide to take it to an expert that doesn't have a clue where to start because you have been messing around with everything so what would have been a quick £35 diagnostic now turns into hours of work checking everything you have been at to make sure you have put it back right.

I am all for helping to solve problems without having to book a car in and i will often try to do this but the problem here could be one of a number of things so why waste time and money risking your engine to find out? Not to mention the COMPLETELY wrong advice that is sometimes given. Would you ask a plumber to fit your double glazing?

There are several well informed people on here that DO know what they are talking about but there are also people on here that basically talk crap, how does the person seeking advice know who to listen to?

Put my points to any other Skyline tuner in the world and they will say the very same thing.
So i'm not being unhelpful, i'm just trying to prevent yet another Skyline arriving at my yard on the end of a rope requiring a rebuild.

And for the record, you can't "recondition" your coil packs, all you are doing is adding to the already poor insulation and temporarily covering up an underlying problem like complete coil pack failure or a lean mixture for example that creates an enviroment in the cylinder that not only causes a misfire but also piston failure.

So the next time your car has a problem where would the £35 of "your hard earned dough" be better spent, on all the above guess work (£35 will not get you far here) or with a Tuner that has invested probably over £100,000 in equipment to find your problem for you without destroying your engine? :)
 

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fk ur 1 pissed off guy,oky 1st step splitfires 70% the problem :)
 

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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:
 

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ahem...
Its a good job i asked the question on here otherwise i would of brought them!! God Im glad i joined this forum..... lol
nuff said, goodnite...............
 

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Thats my quote by the way from earlier thread.......lol
 

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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:
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 :)
 

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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 :)
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.
 

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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.
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.


So far on this thread i have been called a "sheep" by Adam (who should know better) And a "willy waver" "a pissed off guy" and that coil packs cure 70% of that problem (a figure pulled out of fresh air) yes coil packs on a Skyline can and do fail but it's more like 70% of the time it's the plugs or another problem that have caused them to fail. I can recall 3 cars that had faulty/badly adjusted fuel pressure regulators (that they fitted theirselves on advice from here without having a clue on what to set the fuel pressure to - one of the quickest ways to kill your engine) that was causing this type of problem (£300 Splitfires would hardly cure that) and at least another 4 or 5 that have come in "needing coil packs" only to have had the real problem fixed and sent off still running 1.2 bar of boost on the original ones.

Mr Scottish the above was not a dig at you but a scenario that happens all too often.



Perhaps if some of the responses to my factual advice was not so cheeky then maybe i would be more welcoming:)
 

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IMHO you're both right. I've got a very healthy respect for the complexity of my Skyline and as a famous actor once said, 'A man's got to know his limitations'.
I'm all for rooting around under the bonnet to see if there's an obvious problem like a hose or a wire come adrift, but the thought of fitting an adjustable FPR without having a clue as to what it should be set at ??!!*!
I'm more than happy to leave the scary techno stuff to the pro's. :drivin:
 

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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.
 

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From what you have said Whistler33 it may be your coilpacks/spark plugs, easy to recondition yourself / replace. That's where i would start.
Cheers
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??

Have you got any pics of your fastest Europe drag car ? Would be interested to have a look.
Thanks :D
 

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Ultimately it comes down to the car owner, many of us prefer to try and sort an issue out ourselves, as we generally dont want to be taking the Skyline to a garage everytime something is niggling or starting to go wrong with it.

With that said, I see your point, a lack of knowledge and interpretation of what is being said (say on a forum) can be a very dangerous combination. A lot of this, process of eleimination, is based upon experience of owning a Skyline.

I, personally, have found the forum exceptionally helpful, but that is because all the info I have been given is taken with researching and reading other threads.

If I spent a hours labour each time I had a problem without trying to read/ask about it first, I would have spent an absolute fortune in garage expenses.
 

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I can see this from both sides . I am more than happy to have a look through the tech section or ask a question if i have a problem and to a point have a go a fixing it myself, (which i have done) . But also i have had problems i just couldnt sort myself so have had to take it to someone with the correct diagnotic gear,( this i have done too ).

I am a marine engineer by trade and i work on large diesel and petrol engines so i`m by no means stupid ,but i am very happy to hold my hands up and ask for help from forum members or pro`s when i can`t find the answer myself.
 

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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.
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.

Are you are saying i am too cheap now? £35 gets you a full diagnostic test using the genuine Asian hardware/software (not ebay software) and can be carried out in minuites leaving the rest of the hour to examine the engine for other problems of which most can be found in an hour, even if i have to use my Bluetooth automotive oscilloscope (i have invested thousands in this kind of equipment) if not the customer is then asked how much further they would like me to go.

I agree tho, it IS hard to find a reputable garage, and i am often referred to as of the UK's reputable tuners, but i'll be leaving it at that:)
 
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