[urq] CIS injector testing : any interesting DIY setup ?

[Todd Phenneger]

Who is your supplier.
Any chance I can get Injectors for a 5ktq for $20 each?  I think I have a
cyl dropping out under boost.  I think its fuel related.

l8r


> From: Louis-Alain Richard <larichard at plguide.com>
> Date: Fri, 6 Jun 2008 11:58:53 -0400
> To: <quattro at audifans.com>, 'Audifans' <urq at audifans.com>
> Subject: Re: [urq] CIS injector testing : any interesting DIY setup ?
> 
> Well, it's Friday so time for a funny story.
> 
> You remember that I wanted to test my 25 or so CIS injectors (valves in
> Bosch speak) to find a good set. After trying to hook up my CIS pressure
> tester to a small air tank with a metallic container, I gave up and followed
> captain Lazy suggestion : find a good shop and have them tested. I then
> found a Bosch diesel shop here in town, and they agreed to give it a go. The
> next day, after testing and cleaning the first 5, only 3 were still good (it
> looks that my good/bad ratio is better than Huw's ...). They had to test the
> second set. Time was adding up, at 60$ an hour.
> 
> So in a flash of genius, we, the shop owner and I, decided to call our
> suppliers. What was a 60$ injector a few years ago (0 437 502 015) is now
> replaced by a more common part (0 437 502 023) at 20$ each, made in Germany
> by Bosch, available in 20 minutes...
> 
> Don't laugh.
> At least, I know mine were not good, that's a positive point, and maybe that
> was one of the cause of the head gasket failure. I also know that I will
> test the CIS extensively once the engine will be running: there is too many
> parameters that can affect performance/reliability to let a 25 years old
> system in its juice.
> 
> So I have now brand new injectors, and the 25 old ones will go to the
> trashcan. The shop owner told me that this new scheme, replace instead of
> Repair/Clean/Rebuilt, is what he sees now every day. GM diesel pumps are
> 1100$ new from Stanadyne, while he was asking 1800$ for a rebuilt done in is
> shop. Results, they are now only 3 guys working there (they used to be 10),
> but the parts inventory is much bigger. At our North-American/European
> hourly rate (60$ for the independents, but 115$ at BMW), replacing parts
> rapidly makes more economic sense than slowly rebuilding a used unit. Sadly,
> good craftsmanship is a notion that will follow the path of the commercial
> sailor or the typographer...
> 
> Good week-end, don't forget to watch the F1 Grand Prix which is in Montreal
> this Sunday.
> 
> Louis-Alain
> 1983 Quattro, nearing its restart every day now...
> 
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