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Ronnie's.930 Ronnie's.930 is offline
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Join Date: Nov 2007
Location: Rockwall, Texas
Posts: 8,765
The clicking is the diverter valve pistons hitting the end caps because the wax-like washers/bumpers that go on the inside of the caps have degraded and fallen apart. That is also likely an air/vacuum leak that is contributing to the surging idle - info in the linked thread.

Changing 930 dump-gaskets, pictures galore

Is the lambda system hooked up on your car (O2 sensor hooked up, too)? I ask because if it is, the surging idle is likely due to an overly rich idle air/fuel ratio and the lambda computer is trying to correct it back to the pre-set high 14s afr. The above mentioned air leak can be a cause of the rich idle mixture - would need to fix that, and any other air leaks, before adjusting the fuel head idle mixture screw.

And no, there are no solenoids, or any other idle control devices on the 930 fuel system.

Last edited by Ronnie's.930; 05-06-2014 at 11:09 PM..
Old 05-06-2014, 11:05 PM
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