Quote:
Originally Posted by tccrab
Further to this suggestion, here's a link that every ZR1 owner should have handy:
http://www.corvetteactioncenter.com/...diagnosis.html
Props to Rob of the Corvette Action Center for his comprehensive write up on the ZR1 secondary port While you're in there cleaning and poking around, be sure to re-torque all the fasteners on the oil mist boxes and the injector housings. They tend to loosen with repeated temperature cycles.
TomC
'Crabs |
Jim and TomC.
I checked the vacum pump, and it works fine. I also hooked up a vacum pump to the vacum line going under the plenum, and pumped it to 10ng. The pressure held for a while, but did go down to zero over a period of 10 minutes. Also when turning on the ignition, the pump comes on for a few seconds than shuts off, but than after about 3-4 minutes pumps again for about a second. I think i have a slow vacum leak which probobly will not affect the operation of the secondary vavles as much, but I will certainly try to trace it and fix it while i'm under there. How long does the pressure normally hold for in a properly working system?