Anybody bench test their injectors, results shared ?

[verk]

I'm installing secondary fuel filter ( Vulcan ) and in so doing am going to replace my original 150k injectors. Between assorted performance hiccups and the general sentiment that they need replacing, I'm confident enough to order replacement injectors. This will get me back on the road more quickly compared to having originals rebuilt, but also allow me to have these injectors bench-tested by a place that I found today after I called Bosch. This test shop has a Bosch EPS 205 and charges $40/injector. I'm surprised that I can't find result of a single Cummins injector bench-test posted on the Internet. Do most people not bother with spending money on the test or do their tests not generate a report that is printable and shareable ? I found a video on Youtube of EPS 205 that generates the below included report. Can anybody comment on the results, I don't know how to intepret. I'll post my results when I receive.

 

[cerberusiam]

For the most part, the testing is so inconsistent and inconclusive it is not worth the $$ or effort. Test bench can not emulate in-engine performance, heat cycles play a huge part in observed performance, and the interpretation of the results is not objective. It is not unusual to see test results from different places contradict each other, or, multiple tests conclude the injectors are good when they show obvious signs of problems in a running engine. The results are so varied it is impossible to predict a valid result.

 

[sag2]

When I was still working I used to send lots of injectors out to be tested. It saved a lot of warranty dollars as we only replaced/repaired the injectors that were bad. Many times they could repair them with nozzles and it was much cheaper than replacement.
We used a shop on the east coast that is a Bosch authorized distributor. As Bosch does not make any bad injectors (if you ask Bosch) they got in trouble with Bosch for testing and repairing of injectors under the FCA warranty and he almost lost his distributorship. Most of the stuff we sent in for testing was suspected contamination so it made sense to have them tested first as contamination would not normally be covered under warranty anyway.

 

[Bob4x4]

A Bosch shop in the San Diego area had a high rate of failures on their reman pumps.Bosch sent in a spy to purchase a reman from them.It was torn down and was found to have non-bosch parts inside.They were shut down.Be very careful with any testing or rebuilds.

 

[Wayne M.]

A Bosch shop in the San Diego area had a high rate of failures on their reman pumps.Bosch sent in a spy to purchase a reman from them.It was torn down and was found to have non-bosch parts inside.They were shut down.Be very careful with any testing or rebuilds.

----- WOW

 

[Bob4x4]

I think the issue is growing.I have been seeing more early failures than ever.I no longer supply vp's or injectors.I have the client supply and deal with the vendors.Just providing the labor has been the safe way...........

 

[Wayne M.]

So use Geno's as an example, they sell Bosch reman CR injectors. Unless Genos stays on top of their supplier, they could be getting bum stuff.
That's what I'm getting out of post #4.

 

[cerberusiam]

Bosch remans are the best quality and Bosch assumes warranty on them, they are the safest bet for vendors and consumers if you want to save a few bucks. Since Bosch is the supplier it isn't that risky.

However, the cost difference between a reman and new OE comparable injector is less than $100. Just like testing, it is rarely worth the cost savings. Too unreliable in all aspects.

 

[verk]

Very interesting experiences from everybody. I was in contact with a fuel injection shop in my area that completely rebuilds my injectors for $279/per or $1674. New from Bosch directly is $2655 ( $3555 with core charge ). Like cerberusiam, I'm inclined to spend the additional thousand for new compared to reman or having mine rebuilt in which case I also have to wait two days. However you source them, injectors are expensive (in proportion to the value of truck and the cost of other replacement parts) and I'm now beginning to understand why everybody does supplemental filtration. I still plan to have mine bench tested with a shop that has Bosch 205 as I'd like to have a baseline and understanding of the actual condition. I'll post my test results for feedback. Thanks everyone.

 

[Bob4x4]

So use Geno's as an example, they sell Bosch reman CR injectors. Unless Genos stays on top of their supplier, they could be getting bum stuff.
That's what I'm getting out of post #4.

Just installed a set from genos a couple days ago and will have another set here in the next day or2 I trust Genos.They do a good job choosing their vendors.With their volume they probably buy direct and are not risking a small shops integrity

 

[cerberusiam]

I was in contact with a fuel injection shop in my area that completely rebuilds my injectors for $279/per or $1674.

The last person that tried that could barely get the truck to start let alone run down the road. Rebuilding a CR injector correctly takes a pile of money to buy the correct tools, in excess of 1 million investment, extensive training from Bosch, parts supply from Bosch authorized suppliers or you get junk, and enough experience to know the HOW and WHAT of the rebuild. In the US you can count the businesses that meet this criteria on one hand and have plenty of fingers left. Even then, the actual results leave a lot to be desired. Exergy, all ex-Bosch employees, will not reman injectors, they sell genuine Bosch Remans only.

NEVER consider anything other than a genuine Bosch reman and only do that if you absolutely have to. Saving $1000 on injectors then spending $6000 on a new engine does NOT even out.