It should not allow air into the vacuum supply hose as that will contribute to the idle problem. Does the IDLE% rise when the vacuum supply hose is disconnected and plugged? If so the BOV piston (or sleeve) may be worn out.
----- Original Message ----- From: "Frank Smyth" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, September 27, 2008 11:42 AM Subject: RE: Obiwan not idling properly > Fitted new injector parts and the idle is now down from 1100rpm to 950rpm, > IDLE% still drops to 15%. > > The BOV (FM aluminium version) hisses like mad when the car is idling - > should this be letting air in at idle ? With its vacuum supply removed it > is closed 100% > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Frank Smyth > Sent: 25 September 2008 13:59 > To: [email protected] > Subject: RE: Obiwan not idling properly > > Found three problems > - one of the injectors is leaking air into the manifold > - the downpipe is cracked at its elbow where it's bolted to the SBB turbo > - the one-way-valve on the camcover to inlet-valve is open both ways > > Looks like idle problem is mainly the injector seals > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bill Cardell > Sent: 23 September 2008 20:26 > To: Frank Smyth; [email protected] > Subject: RE: Obiwan not idling properly > > All together now-vacuum leak. Your IAC is hitting its bottom limit > trying to hit idle target, but air is getting to the head some other > way. Unless you used the wrong notch on the crank pulley and you're 10 > extra degrees advanced.....this would lead to same bottoming of duty > cycle. > > > Bill Cardell > TurboDog's Dad > www.flyinmiata.com > www.fmwestfield.com > Sales 1-800-359-6957 > Tech 970-464-5600 Before you call, check out > http://www.flyinmiata.com/FAQ/ > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Frank Smyth > Sent: Tuesday, September 23, 2008 1:22 PM > To: [email protected] > Subject: Obiwan not idling properly > > Hi folks > > Long time no talk - mainly because my car was running sweet these past > couple of years :-) > > Had to change the heater hoses, which meant removing and reinstalling > the CAS. I have reset the timing as per the IGN TRIM +10 screen, however > idle speed is now always around 1,000 rpm. The IDLE% screen is showing > 15% no matter what position the idle adjustment screw is at - all the > way in or all the way out. When revving, it increases to 30 or so, then > back down to 15%. Pretty sure I had this around 28% previously. > > One other thing is odd - in the IDLE screen, I am seeing the *n, with > the * disappearing per design. However, putting the clutch in does not > make the n disappear. Should it ? It disappears when the car is in gear > and moving. I removed the wires from the clutch-pedal switch and joined > them with a paperclip - made no difference to the n. > > No other errors or strangeness. All the cabling to the CAS etc is fine. > Lots of 9s on the L3 readout whereas it was fairly well tuned before. > Smells a bit too, and is down on power. CAS is fine, I guess, the RPM > readout etc is fine, and no CAS errors reported. Is there any other > failure mode for the CAS ? It's the only item I disturbed other than > shifting the coilpacks out of the way. > > Sorry, I don't have any logs - have to go on a long hunt for my Serial > adaptor. I have the AEM wideband and the standard O2 sensors - both are > showing readings. > > Cheers > > Frank > 1996 MX5 1.8 Obiwan Link > > About Microsoft Ireland: www.microsoft.com/ireland Microsoft Ireland > Operations Limited. A company incorporated and registered in Ireland > number 256796. > Microsoft Ireland Research. A company incorporated and registered in > Ireland number 342235. > Registered office 70 Sir John Rogerson's Quay, Dublin 2, Ireland > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > > > About Microsoft Ireland: www.microsoft.com/ireland > Microsoft Ireland Operations Limited. A company incorporated and > registered in Ireland number 256796. > Microsoft Ireland Research. A company incorporated and registered in > Ireland number 342235. > Registered office 70 Sir John Rogerson's Quay, Dublin 2, Ireland > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > > > About Microsoft Ireland: www.microsoft.com/ireland > Microsoft Ireland Operations Limited. A company incorporated and > registered in Ireland number 256796. > Microsoft Ireland Research. A company incorporated and registered in > Ireland number 342235. > Registered office 70 Sir John Rogerson's Quay, Dublin 2, Ireland > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
