| [ Total Views: 1336 | Total Replies: 15 | Thread Id: 100710 ] |
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 ancientbugger
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| posted on February 1st, 2013 at 10:49 AM |
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Cleaning fuel injectors
What's the best way to get injectors cleaned? I've googled using an ultrasonic jewelry cleaner but the wife doesn't have one (though it is her
birthday next week but I reckon she wouldn't be too happy ). Is there a
service that does this effectively? Any input would be welcome.
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 barls
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| posted on February 1st, 2013 at 10:53 AM |
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here you go mate
http://www.aldi.com.au/au/html/offers/2827_25311.htm
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ancientbugger
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| posted on February 1st, 2013 at 12:35 PM |
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Wow, great timing, clean injectors AND a happy wife - just in time for her birthday  Seriously though what fluid should I use to clean the injectors?
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vw54
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| posted on February 1st, 2013 at 01:55 PM |
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you should really flow them before cleaning and take readings
then ultrasonic clean and re flow to see difference
why do they need cleaning r u down on performance ???
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11CAB
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| posted on February 1st, 2013 at 04:56 PM |
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The injector buckets can fill up with crap too Barry, they're easily replaced when the injectors are out.
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ancientbugger
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| posted on February 1st, 2013 at 09:02 PM |
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Now this is a steep learning curve for me , are the 'buckets' the ceramic nozzles on the injectors?
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11CAB
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| posted on February 1st, 2013 at 09:10 PM |
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Nope, they're inside the injector where the fuel line goes on.
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ancientbugger
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| posted on February 1st, 2013 at 09:25 PM |
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Right, as the injectors look like they are the original ones the fuel lines are fitted straight to the injector itself so it looks like I'll have to
cut them off to get to the inlet and then , hopefully, the bucket, Cheers Graham
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psimitar
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| posted on February 2nd, 2013 at 11:37 PM |
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Set of 4 would cost $200 professionally which includes flow and pattern record of before and after cleaning.
Those ultrasonics can be bought cheap from fleabay. You also need to supply 12v to the injector after it's first clean so that the injector seat gets
clean. This part helps create a nice fan for the spray pattern.
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Huffypilot
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| posted on February 3rd, 2013 at 06:23 AM |
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I used a ultrasonic cleaner to clean a set of IDF's. I spent a bit of time researching different solutions on samba & STF some guys had secret
solution but I used a dishwasher tablet and wasnt all that impressed. I have seen better results. My point is buying your own cleaner is no silver
bullet and will take some experimentation if you have the time and $.
cheers
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20bkombi
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| posted on February 3rd, 2013 at 10:33 AM |
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Being in the racing sport and using E85 which can block injectors within two- three weeks, it was time to invest in a Professional (AS-NU) EFI
ultrasonic pulses cleaner / flow bench which can clean and flow 8 injectors at a time to give matched results.
This is the same brand of machine that I used while i was working at a performance rotary work shop over 7years ago.
At the moment I am servicing injectors with before and after flow reports, sprey patterns, and changing all o'rings and baskets (filters)
For only $25 each
Pm me
Aaron
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ancientbugger
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| posted on February 3rd, 2013 at 02:22 PM |
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OK it appears that the baskets/buckets were filled with crap except one where only the brass collar was left- no filter!! I've used an ultrasonic
jewellery cleaner whilst running 12v through each injector and have also run an injector cleaning fluid backwards through each one under pressure, a
nice spray pattern is the result now all I need is four new filter baskets. I could buy a packet of a hundred but that may be a bit of overkill
especially as these have only been cleaned the once in over 30 years! Is it possible just to buy small quantities?
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ian.mezz
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| posted on February 3rd, 2013 at 02:29 PM |
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oring & baskets etc cost about $8for 4 ask 20bkombi
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vlad01
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| posted on February 4th, 2013 at 09:30 PM |
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| Quote: | Originally
posted by ancientbugger
Now this is a steep learning curve for me , are the 'buckets' the ceramic nozzles on the injectors?
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no, theose are the pintel caps.
If someone knows who rcondisions injectors properly please let me know.
I think I'd rather buy new or get 2nd ones than get mine recondioned again.
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE |
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20bkombi
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| posted on February 15th, 2013 at 09:21 AM |
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Looks like your injectors weren't flowed corectly hey!!!!
I use 4 different pulse widths and 4 different rpm ranges to see the difference in flow at certain duty cycles.
Most of the time there different. Even from new I had bad flow rates, and second hand ones last night didn't even open!! But after 1 1/2 hours of
cleaning and flowing they came out awesome!!!
The only true way to get an accurate comparison is by fluid weight.
New injectors are way to expensive to keep replacing and don't always flow the same.
AARON'S SPEED SHIFT AUTOS
Specialising in Vw automatic transmissions, differentials and torque converters
Stock or modified to suit your application (street, drag, off road)
Ph 0402 233 027
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vlad01
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| posted on February 15th, 2013 at 02:44 PM |
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no the problem I kept having is before getting them reconditioned my car would start and run fine. the injectors didn't leak as all mine were under
100km of life so there were virtually new in terms of design 2 injectors go, after reconditioning my car was nearly imposible to start if it sat warm
for 30 or so. pulled the rail and primed it and sure enough they leaked like a sieve. Got them to do it again and with another set of good working
ones I had. same problem, they started leaking.
so there were way worse off then if I hadn't got them reconditioned.
So now I run 2nd ones I pulled from an engine with 300k on them and its perfect, even their spray patterns check out good.
the irony !
I am just going to get new ones for my current project as I need larger ones. probably go for flow matched LS1 (931) injectors. 26lb at 3.5 bar.
design 3 EV6 body
mmm lineal flow rate 
btw do you sell injectors? or can get them and flow match?
71 notchback,
Past owner of, 70 NB, 73 SB and 72 FB TLE |
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