Quote:
Originally Posted by Diesel911
Below is a pic of an IP with the cover removed. the Yellow Xs are the parts that are used to do the Fuel Adjustment for each of the Elements.
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Wow, that photo is weird, normally the "yellow Xs" should be evenly spaced. I've never seen one set up like that before.
Quote:
Originally Posted by Diesel911
Once in a while the little Allen Screws come loose or even crack and that block that adjust the Fuel is free to slide where ever it wants to go.
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If you found one loose, that would be bad! Also, if one of the tabs popped out of the notch on the bracket (hard to explain), this can also cause a no-fuel problem on a particular cylinder. I've seen one pump like this. I should duplicate the problem on a core/junk pump and take a photo. Basically make sure all linkages on each cylinder look identical and that none are loose.
Quote:
Originally Posted by Diesel911
Next you can look in side for broken Springs or if any of the Springs were compressed and not returning that would indicate an Element with a Plunger Stuck in the upward position.
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Yup, anything visibly broken would also be bad.
Quote:
Originally Posted by Diesel911
Do not mess with any of the Fuel Adjustments as they are set on a very expensive Calibration stand where they run the IP and measure the Flow or Fuel quanity when the set them.
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If you screw up any of the adjustments, it has to go to a Bosch shop for calibration, and probably a rebuild too. You can safely remove the side cover for a visual inspection, just keep tools away from there. Order a new gasket before you take the cover off, as the old gasket will most likely be fossilized and not seal well.