High idle...white smoke

eg6auto · Post by **eg6auto** » Sun Aug 02, 2009 6:31 pm

Newly built motor. Gsr bottom rebuilt B16 head w/ crower S&R ITR Intake mani Stock Exhaust mani CTR cams Arp head bolt new head gasket B16 auto trans w/LSD LC-1 wideband wired into P30 ECU running stock Type R cal I got cel for IACV and primary O2 heater, disabled O2 and plugged up Iacv. after that car idles high at 2200rpms or so, and I'm getting a lot of white smoke from exhaust, before plugging IACV in, it idled at 1200, but it was bouncy before wideband was reading through ECU. please help

b20beast · Post by **b20beast** » Sun Aug 02, 2009 8:30 pm

you should do a compression test

David974 · Post by **David974** » Mon Aug 03, 2009 1:41 am

Did you tune the idle , adjust injector offset, battery offsets? and play with IAC settings

eg6auto · Post by **eg6auto** » Mon Aug 03, 2009 10:34 am

No, but will try this morning. injector and battery offset? what's that to do?

thething96 · Post by **thething96** » Mon Aug 03, 2009 2:08 pm

Did you try replacing the pcv valve????????????????????

eg6auto · Post by **eg6auto** » Mon Aug 03, 2009 11:17 pm

what pcv valve?

eg6auto · Post by **eg6auto** » Mon Aug 03, 2009 11:45 pm

If I unplug IACV, rpms are 1-1.2k, but rapidly bouncy, no white smoke for 1-3min, then heavier. When plugged, rpms stay 2-2.3k, and gradually heavier`white smoke from exhaust. I'm thinking since new HG, and head with ARP HB's, disconnect coolant lines from TB and IACV and check start engine?...

thething96 · Post by **thething96** » Tue Aug 04, 2009 2:56 am

What dou YOU mean what pcv valve? The pcv valve is a little valve with an elbow that connects through a vacuum hose from your block to your intake manifold. It's almost like a check valve. It relieves cranks pressure directly to your intake manifold(having a catch can would be better). On my most current setup, I had the same issue. Installed a stock Type R and it was idling high and smocking, a lot of white smoke. I would unplug the iacv and it would idle lower still white smoke coming out, but not as much. It's a $4 piece, most every auto parts places sale them. That would be a good starting point..............

eg6auto · Post by **eg6auto** » Wed Aug 05, 2009 1:47 am

Thanks, that was it!

thething96 · Post by **thething96** » Wed Aug 05, 2009 10:18 am

What did the trick for you?

eg6auto · Post by **eg6auto** » Wed Aug 05, 2009 11:48 am

I thought the piece that goes through the IM was just a fitting that would easily come out. well it was previously broken so I took it out, not knowing, and ran a strait hose to the breather. I now know what a pcv valve actually is. I blocked off the intake mani, that brought idle to normal, and no more white smoke! I ordered a new pcv valve, thanks for your help! Ectune support is the best!