Who has put a good number of miles on Bosch Brazil or India injector nozzles made in the last, say, 3-4 years? Monarks seem to be getting bad reviews as of late and I'm curious just how bad the OE's can be.

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'82 300CD
"Pearl", the very first turbo diesel 123 coupe
Totaled 11/23/18, rebuild in progress.
'85 300TD, "Artemis".
'78 300D euro, "Ol' Red", mostly retired.
'85 300D, "Gandalf".

In 2017 I had a brand new set of 6 Bosch-India 265 nozzles for my 300SDL. I had to send 2 back due to very poor spray pattern, the 2 I received in replacement were fine. Ran for roughly 3000 miles and pulled again due to persistent nailing when cold. Nearly all of them had a very poor spray pattern. Cleaned, balanced, pop-tested, reinstalled, 1500 miles later, nailing back.

Replaced with Monark 265 nozzles that were alright, but had quite a bit of "chatter" at idle. Never nailed.

In my 350SD, the original Bosch-Germany nozzles were in serviceable condition and are kept in storage as spares. I had the Monarks installed by forum member Greazzer and ran them for a while, but ultimately upgraded to Firad 314's which I could not be happier with. They have over 5000 miles on them since installed and have never given me a single issue. Smooth and quiet. The Firads are made in Italy and I suspect they pick up where Bosio left off, but don't quote me on that.

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Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]

Good to know, thanks. The Firads seem somewhat new to the scene but also seem to be available, which is more than can be said of Monark or Bosio.

__________________
'82 300CD
"Pearl", the very first turbo diesel 123 coupe
Totaled 11/23/18, rebuild in progress.
'85 300TD, "Artemis".
'78 300D euro, "Ol' Red", mostly retired.
'85 300D, "Gandalf".

Availability and cost is why I decided to try the Firads. I haven't been disappointed.

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]

I've got about 50K miles over 4 years with Bosio nozzles and DIY'd the injector rebuild.

Dkr.

have a several hundred miles on a new set of Bosch India nozzles. spent time to ultrasonically clean them and the bodies before installation. pop tested and all had good spray patterns. run fine.

Ultrasonic cleaned the new nozzles? Does that help?

I've had to reject some of those brazil bosch nozzles out of the box.

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1985 300TD 1981 Scirocco 1.6D conv 1986 Golf 1.6D 2003 Golf TDI

i really think it does. lots of off shore manufacturered items have the machining and tolerances right, but there is grit present such as in the bed of the mini lathes one can buy. need to disassemble everything and clean it before use. ultrasonic cleaning of the nozzles MAY be unnecessary but there's enough reports of bad patterns on the bench before install that SOMETHING is going on. cleaning it myself eliminates one variable and i had 5 out of 5 good. too small a statistical sample to draw a conclusion but i will anyway. i clean them.

I bought some from Greazzer, the car ran very well .

I'm not dialed in on the various part #'s available, I don't want any smoking if possible, I'm after fuel economy and smooth running, I can always give it more throttle to go faster .

A good thread I think .

I've had some serious fuel fungus issues and it's prolly time to yank and pop test them all again .

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-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Thanks for sharing your idea, with all the other work involved in rebuilding injectors it's worth a try.

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1985 300TD 1981 Scirocco 1.6D conv 1986 Golf 1.6D 2003 Golf TDI

If someone rebuilds a set of Injectors and they performed well on the Pop Test and spray patter and you install them and they seem to be a little noisy I am thinking you ought to retime the Fuel Injection Pump.

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84 300D, 82 Volvo 244Gl Diesel

The most common clash of rebuilt injectors and IP timing is that the usual 2-4 degrees retarded you'll see on a car that hasn't been touched since the 80's will cause poor cold start performance when new injectors are installed that retard the injection timing even further.

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'82 300CD
"Pearl", the very first turbo diesel 123 coupe
Totaled 11/23/18, rebuild in progress.
'85 300TD, "Artemis".
'78 300D euro, "Ol' Red", mostly retired.
'85 300D, "Gandalf".

I dropped a set of Firad 314s into my blue car back late last year, I had a strange knock that I believe was one injector that had a terrible spray pattern and was coking up the prechamber from the look of things.

As well as some other stupidity on my part of reusing heat shields when I did a compression test trying to track down that knock.

I'm fairly certain I need to roll a new chain or at the very least check and install a offset key to get the timing back where it needs to be, and check the IP timing while I'm fooling with all that, the car has unreal low end power, starts easy, but seems to lose power at higher RPM. (Filters and ALDA line cleaning helped some, but its still a little sluggish above 3k)

I pop tested all the injectors, set them just a hair high, around 2000psi, it was a little extra clattery at first, after a few drives they've settled in nice and it runs amazingly well.

There is a before/after in this video https://www.youtube.com/watch?v=65sxorr1Zp8
1:08 starts the before section, 11:20 is the startup after the new nozzles arrived and I balanced and poptested everything.

It has gotten quieter and quieter as we've been driving it with the new nozzles.

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1982 300D (w123, "Grey Car")
1982 300D (w123, "Blue Car")
2001 Ford F150 "Clifford" (The Big Red Truck)
1997 Dodge Ram 2500 12V Cummins
1996 Dodge Ram 2500 12V Cummins
Previous Vehicles:
1995 E300D, 1980 300SD, 1992 Buick Century, 2005 Saturn Ion

Jarod, how many miles on those nozzles so far? I'm not sure yet how long it should take for them to settle in and quieten down.

__________________
'82 300CD
"Pearl", the very first turbo diesel 123 coupe
Totaled 11/23/18, rebuild in progress.
'85 300TD, "Artemis".
'78 300D euro, "Ol' Red", mostly retired.
'85 300D, "Gandalf".

My experience is that you need to give new nozzles a bare minimum of 500 miles to "break in" before going nuts trying to fine tune things or track down strange noises. The Firad 314's in my SD are so quiet that you can hear the delivery valves "ticking" over the noise the engine makes. It's a surprisingly quiet diesel, although the prechamber design and "moose horn" combustion chamber on the 3.4L's does lend some of the quietness.

__________________
Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]