Quote:
Originally Posted by Clemson88
I think a 24 hour soak in carb cleaner will loosen all the carbon. I'm not thinking carbon buildup is the issue if the injectors are causing engine shake. I'd lean toward installing and balancing new Monarch nozzles after I'd eliminated every other possible factor mentioned in this thread.
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The normal method where I used to work to clean the stock nozzles is to remove the Injector Nozzle (keeping the Nozzle Body and the Pintel/Needle together as a set) and use the proper sized music wire to drill through the Carbon. Next would be to put the Pintel and Nozzle Body into a ultrasonic Cleaning Tank.
Then used compressed air to blow out the holes.
Bosch and Mercedes have (or used to have) a kit for cleaning the Nozzles that has the Pin Holders and wire and a mandrel to clean the seating area of the Nozzle Body.
The pic will give some comparision of the size of the hole. The service manual has the size of the wire required to do the job. The is actually 2 different versions of the same nozzle. The later Nozzles have a / on the and indicate that the size of the hole in the pintel modified to be enlarged.
The other pic is of the Bosch Injector Nozzle Cleaning kit.
There is a pic with the size of the wire listed at the bottom.
I blew up the diagram showing the passages in the pintel/needle