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Old 09-09-2010, 11:11 AM
E_S E_S is offline
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Complete remanufactured injectors or nozzles?

I've been looking around a bit and have found complete (the whole assembly) remanufactured Bosch injectors for the OM617 for just a few $$ more a piece than the Bosio nozzles, which I then have to pay someone to adjust the injector opening pressure after installing.

Is there a good reason NOT to buy complete Bosch remanufactured injectors?

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Old 09-09-2010, 11:32 AM
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It depends on the rebuilt. Are they from India, with the India made nozzles? Those have been known to fail early.

I had my car's injectors rebuilt and Monarch nozzles installed. They are working very well.
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  #3  
Old 09-09-2010, 11:33 AM
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New Bosch nozzles are known to be of questionable quality (India, IIRC). It's also possible that the reman injectors were just assembled and not pop tested/balanced.

Monark nozzles seem to be a favorite around these parts.
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Old 09-09-2010, 12:03 PM
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X3 on the made in India Spray nozzles.

Contact member C Sean Watts (if you want to). He, rebuilds Injectors with Monark Nozzles (Made in Germany) and has a compitative labor rates on the job.

He also sells the Moark Nozzles and completly New Monark Injectors.

I rebuilt my own Injectors with Monark Nozzles I bought from Sean and liked them enough I orderd 6 more and rebuilt the Injectors with my Volvo Diesel with them.

Even if the Bosch Nozzles for the 617 were made in Germany or France like they used to be they have a feature that I dislike.
In the thumbnail Pic #14 and #15 are holes drilled in the Pintel of the Spray Nozzle.
On the Injectors or my Car and most of the ones I have Pulled from the Junk Yard those holes have been plugged solid with Carbon.
It may be that doing periodic Diesel Purges would keep those holes clean but ounce they are Pulgge Solid I doubt if a Purge is going to clean them.
The Monark 617 Nozzles and the ones for the later Mercedes diesels did away with those holes.
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Complete remanufactured injectors or nozzles?-azz-inj.jpg  
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Last edited by Diesel911; 09-09-2010 at 12:19 PM.
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Old 09-09-2010, 12:39 PM
E_S E_S is offline
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Thanks for the info!

I looked around and found a source of Monark nozzles and the pressure tester, shims etc. for a decent price, and I think I'll go for it. I've done injector testing/adjustment before, but don't have access to the equipment any more.

I live in Norway, Europe where the labor rates are extremely high ($150/hour is quite normal)..
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Old 09-10-2010, 12:08 AM
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Quote:
Originally Posted by E_S View Post
Thanks for the info!

I looked around and found a source of Monark nozzles and the pressure tester, shims etc. for a decent price, and I think I'll go for it. I've done injector testing/adjustment before, but don't have access to the equipment any more.

I live in Norway, Europe where the labor rates are extremely high ($150/hour is quite normal)..
In Europe you have a larger selection of companies to buy Nozzles from.
If you are not in a hurry you could build your on Nozzle/Pop Tester.
Somewhere in the links below some of our Members have made them from a Hydraulic Jack or a Portapower type Hydraulic Jack.
There was an old US Diesel Diesel Engine Maker here in the US; BUDA that made Nozzle Testers for their product and they use a Hydraulic Jack to make it from. Ounce a year or so one comes up for sale or auction on eBay here in the US.
DIY Repair Links
http://www.peachparts.com/shopforum/forumdisplay.php?f=82
http://www.peachparts.com/Wikka/DoItYourSelf
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Old 09-13-2010, 11:34 AM
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Quote:
Originally Posted by Diesel911 View Post
It may be that doing periodic Diesel Purges would keep those holes clean but ounce they are Pulgge Solid I doubt if a Purge is going to clean them.
I replaced my injectors about 4 years ago with Bosch. My idle has in the past couple of months been getting pretty bad. If a purge possibly won't clean the #14 and #15 holes, can the injector be removed and cleaned? Or is rebuild/replacment the only option?
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Old 09-14-2010, 03:12 AM
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I was talking to a well respected injection specialist (who also drives a Mercedes diesel) He did not think highly of cleaning the injectors. He offered to test and rebuild mine at cost of parts so was not looking to make any money off me. His attitude towards cleaning was probably based on the fact the the injectors are most likely worn anyways. I did a purge on mine and it helped the idle a bit. No more power though (at least from the seat-of-the-pants-O-meter)

I could not locate Lubrimoly purge so used Howes Meaner Power Kleaner. It did work. I ran a lot through and put the remainder in the tank.
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Old 09-14-2010, 10:44 AM
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Quote:
Originally Posted by cousindave76 View Post
I replaced my injectors about 4 years ago with Bosch. My idle has in the past couple of months been getting pretty bad. If a purge possibly won't clean the #14 and #15 holes, can the injector be removed and cleaned? Or is rebuild/replacment the only option?
In they Factory Service Manual they show picking out the hole with the proper sized Music Wire held in a Pin Vice (a hand held thing with a tiny Chuck to hold the Wire).
The wire you use has to be smaller than the Hole.
They give the size of the Wire in the Instructions.
When we did this sort of thing back in the 1970s where I used to work (we had several coils of different sized Music Wire) we had a tiny grinder and would grind a Hypodermic Needle typ point on the wire. Stick the wire in the hole and gently twist it and sort of drill through the Carbon.

The other way is to put the Nozzles in a Ultrasonic Cleaning Tank. (Remember the parts of each Spray Nozzel are fitted to only that Spray Nozzle and cannot be mixed.)

Up until sometime in 1981 the smallest hole was 0.15mm, sometim in 81 the central hole was enlarged to 0.20mm those Nozzles with the enlarged hole have a / at the end of the Nozzle number.

The cleaning wire sizes in the manual are listed as 0.13mm and 0.18mm.

I have a the smallest Ultrasonic Cleaning Tank Harbor Freight sells for Cleaning jewelrey. But, I do not know how effective it would be at cleaning out the little holes. Or what you could put in it to help eat up the Carbon.
People claim to have used Marvel Mystrey Oil, Brake Fluid and Paint Thinner to disolve Carboned Poston rings but I would avoid the Paint Thinner as the Ultrasonic tank gets warm/hot and of the 3 Paint Thinner is the most flammable.

But the other issue is that the made in India Bosch Nozzles are not know for being able to last as long as the German and French ones. But, you would not know that without Pop Testing them.
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Last edited by Diesel911; 09-14-2010 at 11:09 AM.
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Old 09-14-2010, 11:15 AM
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Originally Posted by E_S View Post
I've been looking around a bit and have found complete (the whole assembly) remanufactured Bosch injectors for the OM617 for just a few $$ more a piece than the Bosio nozzles, which I then have to pay someone to adjust the injector opening pressure after installing.

Is there a good reason NOT to buy complete Bosch remanufactured injectors?
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