Make sure that you are shielded from the diesel spray - it comes out at a very high pressure and can get injected into your skin and give you blood poisioning.
IMO, the other side of the problem is that you need hardened shims from bosch to adjust the pop pressure. A homemade tester is fine for checking the spray pattern but you can't adjust it without shimming the springs.
There is a place called diesel fuel injection service that knows VWs well, 503-285-1213 is their number, they are located in washington state and they can do the adjustment.
The actual tool is VAG 1322 and it's expensive, you don't need anything special to test the actual popping. BUT you do need special stuff to shim the 2 stages of springs. Just take any pop tester and use it. The first squirt is the pilot injection, the second is the main injection.
i just purchased a Bosch Pop tester, VAG 1322 and an assortment of injector shims. I know how check the first stage of injection with the pop tester. My question is how does one actually check the second stage? when you pop the injector it just sprays open at the first stage of injection (220 bar). I'm looking to see where the second stage is set but I don't know how to accomplish that.
Any advice would be greatly appreciated.
Sending my injectors off is not possible as i am conducting a great deal of testing with different pressures and I need to be able to make the changes myself.
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