The car wont start after cleaning the injectors

H

Hasse

Member
Hi,

Cleaned my injectors with the help of an ultrasonic cleaner. Then I opened them up with the help of a 9 volt battery and blow air in them the wrong way.
I then put everything back and now the car refuses to start. The engine turns over and there are initiallly two or three weak firering ups and then nothing moore happens even if the engine continues to turn over.

The way i treatened the injectors was it all wrong or......?

Kind regards
 
I'm just guessing but would have thought that high-pressure air forced the wrong way in to the injectors risks blowing a seal of some kind and any current inversion or over-voltage is going to poop the electronics. Sounds like a balls of steel job to me, what problem were you trying to sort with this process? :|
 
Hi,
Thank you for your answer. I didn't use high pressure air (I actually blow with my own lunges). The injectors are high- ohmed so they ought to cope with the voltage. The reason why I did the job is that the car has ben standing still for three months and at the first drive it went in to some mode at heavy acceleration (it began to idle between 800 and 1200 rpm - up and down - and the EML light came on). Then I could get it going in a normal way by turning it off and the n turning it on again but the same thing then happened every time I accelerated heavy again.
 
I'd get it plugged into DIS and see whats happening. I vaguely remember being able to read injector pressure from Ford cars using their diagnostics, so I'm sure you can do the same on BMW. See what data its getting from them.
 
No offense, but you possibly should have had the codes read before launching into a repair based on guesswork (which may have now caused more harm than good).
The symptoms you describe are often Plugs, Coils, then injectors (in that order). You may find the codes will indicate a misfire on one cylinder, needing a replacement of at least that plug and coil pack (but you could easily do all 6 plugs at the same time, what sort of mileage on the car, any plugs changed in that time?...)
 
Thank you for your concern. Plugs and coils are rather new so I don't think any of those are the culprits. Well, I probably have to take it to a garage and let then have a look. I'll come back and let you know what was wrong.
Buy
 
Hook them up to a pressurized fuel line and see if you have flow of gas at all.
And bleed the fuel rail.
 
Thanks for the tip GuidoK. I got the car booked at the garage first next week so meanwhile I can test the injectors the way you suggested as it hardly can do any moore damage.
 
There are a few videos on youtube that let you see how to hook up a hose and pressurize it. Multiple ways to do it.
After they all work, see if you have fuel pressure/flow by bleeding the valve on the fuel rail.
 
Thanks GuidoK - I reckon I'll manage to test he injectors and I have also bleeded the fuel rail by the valve at the top of it. I understand that you shall put the ignition on a few times (without starting the car) so the fuelpump can build up the pressure in the fuel system and then you bleed the fuel rail through its valve (this bleeding procedure you can do a couple of times, as I understand).

Hasse
 
I've checked the injectors and they all opened just fine and wasn't clogged. I'm beginning to suspect that the pressure in the fuel system is to low. When you press the valve at the fuel rail - with which force shall the petrol come out ( i.e. how strong is 3 bar)?
 
I've recently spent two days phaffing around getting my phone fixed after I ballsed it up following an on-line guide to rooting it and other custom trickery. In the end I called a halt and gave it to someone who knew what they were doing and all is now well with everything recovered and working. Lesson learned, as Dirty Harry says, "a mans got to know his limitations" and I had overstepped mine.

Maybe you should stop now? 8)
 
Ewazix said:
I've recently spent two days phaffing around getting my phone fixed after I ballsed it up following an on-line guide to rooting it and other custom trickery. In the end I called a halt and gave it to someone who knew what they were doing and all is now well with everything recovered and working. Lesson learned, as Dirty Harry says, "a mans got to know his limitations" and I had overstepped mine.

Maybe you should stop now? 8)
Click to expand...
you only realised your own limitation when you realised you weren't getting the result you had anticipated/expected after starting.
the point is you decided to have a crack at fixing something. that's considered as having 'initiative' and possibly the same ethos that the OP decided to employ.
Instead of every sarcastic big-headed fkr on this forum berating him for having a go (marius especially) why don't you offer constructive, helpful words of advice/encouragement if you can?
jeezus
 
Chris_D said:
Ewazix said:
I've recently spent two days phaffing around getting my phone fixed after I ballsed it up following an on-line guide to rooting it and other custom trickery. In the end I called a halt and gave it to someone who knew what they were doing and all is now well with everything recovered and working. Lesson learned, as Dirty Harry says, "a mans got to know his limitations" and I had overstepped mine.

Maybe you should stop now? 8)
Click to expand...
you only realised your own limitation when you realised you weren't getting the result you had anticipated/expected after starting.
the point is you decided to have a crack at fixing something. that's considered as having 'initiative' and possibly the same ethos that the OP decided to employ.
Instead of every sarcastic big-headed fkr on this forum berating him for having a go (marius especially) why don't you offer constructive, helpful words of advice/encouragement if you can?
jeezus
Click to expand...

Wow mate :o
it wasn't intended as sarcastic, but honest advice. If someone had told me not to feck around with my phone because the online guide was BS and would lead to expensive problems if I got it wrong, I would have gratefully accepted the wise words. It's clear the OP has limited knowledge of what he's doing and probably didn't research or get good advice if he did (e.g. why clean the injectors? it could have been many other problems, why not check codes first? etc), surely best advice seems to be stop before any damage is done, chances are what might have been a cheap fix is being turned in to grief.
 
Ewazix said:
Chris_D said:
Ewazix said:
I've recently spent two days phaffing around getting my phone fixed after I ballsed it up following an on-line guide to rooting it and other custom trickery. In the end I called a halt and gave it to someone who knew what they were doing and all is now well with everything recovered and working. Lesson learned, as Dirty Harry says, "a mans got to know his limitations" and I had overstepped mine.

Maybe you should stop now? 8)
Click to expand...
you only realised your own limitation when you realised you weren't getting the result you had anticipated/expected after starting.
the point is you decided to have a crack at fixing something. that's considered as having 'initiative' and possibly the same ethos that the OP decided to employ.
Instead of every sarcastic big-headed fkr on this forum berating him for having a go (marius especially) why don't you offer constructive, helpful words of advice/encouragement if you can?
jeezus
Click to expand...

Wow mate :o
it wasn't intended as sarcastic, but honest advice. If someone had told me not to feck around with my phone because the online guide was BS and would lead to expensive problems if I got it wrong, I would have gratefully accepted the wise words. It's clear the OP has limited knowledge of what he's doing and probably didn't research or get good advice if he did (e.g. why clean the injectors? it could have been many other problems, why not check codes first? etc), surely best advice seems to be stop before any damage is done, chances are what might have been a cheap fix is being turned in to grief.
Click to expand...
Agreed and definitely worth doing research or gaining advice before wading into something - that's a logical risk-driven approach. but i'd prefer to see respected members here, of which you're one, imparting only useful advice in helping someone out of a sticky situation.
The words of advice and encouragement I got here when I was sorting my own zed at the beginning were totally invaluable and spurred me on to go past my own perceived limitations. Otherwise i may have lost confidence and do what the OP has decided to do and take it over to a mechanic, paying for the priviledge.
I got a quote from an indy for over €2000 for all of the fixes I eventually did myself, all of which were new to me! And as MachineMonkey Mat said himself, it was definitely 'character building' as well as teaching me more than what I'd known before. I can now impart that advice and experience to others if necessary...
I'm just sad I don't know anything about injector cleaning!
:thumbsup:
 
Marius said:
why start the job if you have no f***ing clue how to do it properly ?
Click to expand...

Then what did he do wrong at cleaning the injectors?

I mean without the hindsigth of the final solution yet it would be entertaining to see what you think will solve his issue :roll:
Lets see what you're made of :D
 
Marius said:
why start the job if you have no f***ing clue how to do it properly ?
Click to expand...

65501731.jpg
 
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