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[Pete Elite]

  Hi,
     Is it possible to clean a set of Injectors using an ultrasonic jewellery cleaner?

 If it is possible what would be the best cleaning fluid to use?

     Thanks,
               Pete .

[Dave-C]

I'd say very likely, but, what about some Redexy kinda stuff on a long run??

DC

[Pete Elite]

Hi Dave,
           I just thought that whilst i had them removed it would have been nice to clean them properly .

[Kevin Wood]

Check out these guys: http://www.injectorcleaning.co.uk/index.htm

I sent a set of injectors to them and they were returned in a couple of days with a report on spray pattern and flow rate before and after, with new pintle caps, finger filters and "O" rings fitted.

I guess ultrasonic cleaning would be possible on a DIY basis but without a rig to check the spray pattern and flow It's difficult to know when you've cleaned them successfully. Such a rig would be easy to construct, of course (it's been in the back of my mind to play with this idea for a while...).

I'm not sure how successful fuel additives are in reality.

At least after this process you know if the injectors are performing to manufacturer's spec afterwards.

The ultrasonic cleaning does remove paint from the injector body IME so it's worth giving them a coat of paint afterwards, if only for aesthetic purposes.

Kevin

[Dave-C]

Hi Dave,
           I just thought that whilst i had them removed it would have been nice to clean them properly .

I'm sure that Bosch dealers had used to have an injector cleaning service at one time...  It involved and electrical connection to open the injector, then a pump to wash out the injector, ...  Maybe a search on t'internet may enlighten!!

[Pete Elite]

 Thanks for your helpful replies .

[Markjay]

I'd say very likely, but, what about some Redexy kinda stuff on a long run??

DC

I am a great fan of Redex, and use it with every tankful. Redex works best if applied regularly and from new, it will keep the injectors squeaky clean, but the benefits of a one-off application on highly contaminated injectors are questionable...

[Marks DTM Calib]

The ultrasonic bath method works very well, idealy you also force cleaner through the injector with a pump whilst dpulsing the injector with an astable circuit (555 or beter). This is the method used by the people who clean the injectors normaly, the only extra thing they do is observe the spray pattern with a strobe light to.

So yes, cleaning the tips in an ultrasonic bath with very clean water is worth doing.

[Pete Elite]

Hi Mark,
          Thanks for your helpful reply.

 I had a look at the Firm Kevin Wood suggested and think i will give them a go as for around £75 seems a good price and at least i'll know they all work properly .


  Regards,
             Pete .

[Kevin Wood]

If you are going to be keeping the car for a while and want to know they're tip top it's probably worth it. That's about the cost of a single new injector after all.

However, I was amazed that mine were only a few % out on flow rate and had perfect spray pattern when they came from an old Volvo that had been sitting in a scrap yard for ages. They seem to be pretty robust.

Kevin

[Pete Elite]

 Hi Kevin,
             When i read the info they gave on their site i was a little worried about the part where they say that if the Injectors are not used for a while they can become seized, and as the ones i'm going to use are some low mileage ones i bought off of eBay and not the originals i thought that i'd be better off having them cleaned properly for piece of mind .

  Pete .