My Fourth Z4 E85

Malibu111 · 06-28-2022, 01:39 PM

So, still dealing with EVAP blues and can't pass emissions here in CT unless I get the light to stay OFF! My 2003 3.0 threw the EVAP small leak code from hell and after replacing the cap, front intake solenoid, rear pump and ebay canister, light tripped again. My little slingshot has now expired registration due to this uglyness and I'm getting tired. I'm looking to hear about other similar nightmares and don't tell me that I now need to remove the gas tank and I bet someone will....ugg

This is my fourth Z4 3.0 and love this car. Why would anyone desire to look else where for a fun, fast and damn good looking roadster. I drive this beast in steptronics all the time and rev her high which she appears to enjoy. Oh, and don't forget to remove the foam inserts in the intake /firewall flex pipe.

I'm hoping someone can shed some light and provide next steps towards resolution. Chris in CT....

bagekko · 06-28-2022, 03:08 PM

I had a recurring issue on a M52 2.8 Z3 I had forever and its been so long I can't remember if it ever got solved. It may of been a sensor or perhaps intake boot related. Will try to dig deep in the memory.

It doesn't go away once car is fully warmed up?

3002 tii · 06-30-2022, 07:06 AM

Without obd codes hard to diagnose

Clearancediver · 06-30-2022, 01:41 PM

If you haven't already… download INSTAD and purchase cable for it. Then read the codes (memory codes as well)…. Clear and then run car and see what active codes reappear. Diagnose those those codes using INSTAD and look at the causes/solutions recommended and go from there.

If I remember correctly there is something in the rear bumper that can cause the fault. I never had to go that far (gas cap replaced) when I had that issue, but remember that particular "device/whatever it was" as a potential cause.

Malibu111 · 07-01-2022, 08:42 AM

Yes, code P0442 ( small leak detection)

Replaced gas cap
Replaced intake purge sensor (engine bay)
Replaced EVAP tank pump (rear bumper)
Replaced EVAP tank with eBay purchase (rear bumper)

GuidoK · 07-01-2022, 02:55 PM

Go to a good mechanic.
Your system needs to be pressurised with a smoker.
Much cheaper and more effective than randomly replace parts.
A leak can be anywhere, might be as simple as a $1 piece of rubber hose...

Quote:

Originally Posted by Clearancediver

If you haven't already… download INSTAD and purchase cable for it.

It's ISTA D, not INSTAD...

Clearancediver · 07-01-2022, 11:27 PM

Easy to mis spelI going from memory… have INPA as well so…..

06-28-2022, 01:39 PM	#1
Malibu111 New Member 0 Rep 6 Posts Drives: BMW 2011 M5 F10 550i Join Date: Jan 2022 Location: Oxford, CT iTrader: (0)	My Fourth Z4 E85 So, still dealing with EVAP blues and can't pass emissions here in CT unless I get the light to stay OFF! My 2003 3.0 threw the EVAP small leak code from hell and after replacing the cap, front intake solenoid, rear pump and ebay canister, light tripped again. My little slingshot has now expired registration due to this uglyness and I'm getting tired. I'm looking to hear about other similar nightmares and don't tell me that I now need to remove the gas tank and I bet someone will....ugg This is my fourth Z4 3.0 and love this car. Why would anyone desire to look else where for a fun, fast and damn good looking roadster. I drive this beast in steptronics all the time and rev her high which she appears to enjoy. Oh, and don't forget to remove the foam inserts in the intake /firewall flex pipe. I'm hoping someone can shed some light and provide next steps towards resolution. Chris in CT.... Last edited by Malibu111; 06-28-2022 at 01:44 PM..
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06-28-2022, 03:08 PM	#2
bagekko Major 811 Rep 1,076 Posts Drives: Lots of BMWs Join Date: Aug 2013 Location: RI/MA iTrader: (0) Garage List 2018 M4 Vert [0.00] 2006 Z4M Roadster [0.00] 1995 540i [0.00] 2008 BMW M5 [0.00] 2019 i3 Rex [0.00] 2021 X7 40i MSport [0.00]	I had a recurring issue on a M52 2.8 Z3 I had forever and its been so long I can't remember if it ever got solved. It may of been a sensor or perhaps intake boot related. Will try to dig deep in the memory. It doesn't go away once car is fully warmed up? __________________ 2008 M5 6spd, 1995 540i 6spd 2018 M4 Vert Comp, 2019 i3 120ah REX 2021 X7 40i MSport, 2006 Z4M 6spd
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06-30-2022, 07:06 AM	#3
3002 tii Lieutenant General 2280 Rep 12,565 Posts Drives: Z4 M, X5, GX460 Join Date: Apr 2008 Location: CT iTrader: (99) Garage List F15 X5 xDrive35i [8.75] E86 Z4 M [10.00] F10 550i (Retired) [9.17] F25 X3 xDrive35i (R ... [9.43] E82 135is (Retired) [9.50] E85 Z4 M (Retired) [9.41] E90 328i xDrive (Re ... [9.25] E86 Z4 3.0si (Retired) [9.20]	Without obd codes hard to diagnose __________________ Follow for latest mods
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06-30-2022, 01:41 PM	#4
Clearancediver Lieutenant 86 Rep 406 Posts Drives: 2004 Z4 Join Date: Oct 2012 Location: Victoria, BC Canada iTrader: (0)	If you haven't already… download INSTAD and purchase cable for it. Then read the codes (memory codes as well)…. Clear and then run car and see what active codes reappear. Diagnose those those codes using INSTAD and look at the causes/solutions recommended and go from there. If I remember correctly there is something in the rear bumper that can cause the fault. I never had to go that far (gas cap replaced) when I had that issue, but remember that particular "device/whatever it was" as a potential cause. __________________ Sent from my smart phone...
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07-01-2022, 08:42 AM	#5
Malibu111 New Member 0 Rep 6 Posts Drives: BMW 2011 M5 F10 550i Join Date: Jan 2022 Location: Oxford, CT iTrader: (0)	Still happening Yes, code P0442 ( small leak detection) Replaced gas cap Replaced intake purge sensor (engine bay) Replaced EVAP tank pump (rear bumper) Replaced EVAP tank with eBay purchase (rear bumper)
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07-01-2022, 11:27 PM	#7
Clearancediver Lieutenant 86 Rep 406 Posts Drives: 2004 Z4 Join Date: Oct 2012 Location: Victoria, BC Canada iTrader: (0)	Easy to mis spelI going from memory… have INPA as well so….. __________________ Sent from my smart phone...
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