M30 spitting black smoke

Mon Sep 28, 2009 7:36 am

Hi to all big6 swappers,
as the topic says, mine is giving black smoke from the start-up. What options to start with ?? spark plugs ? OS2 sensor ? cleanup TB??
would appriciate any helpful feedback.
thanx

Mon Sep 28, 2009 12:32 pm

all of the above mate, black smoke = fuel related... could be related to plugs, TB.. change the plugs and clean the body ! does it drive ok ?

Mon Sep 28, 2009 10:08 pm

YES, drives fine with a tappet noice, i think valves needs to be adjusted. Big-6 plucked from a '90 E32 735i auto.

Recently i changed thermostat and noticed aluminum oxidation formation inside the coolant passages.

Planning for a full head-work, Thunderbird valves and AFM delete (with MAP-ECU2) this winter. Also consider dumping the heavy (8 kg.) intake mani with a Cabon Fiber air plenum.

Tue Sep 29, 2009 12:52 am

blue temp sender? making it run rich from cold.

Tue Sep 29, 2009 3:17 pm

gareth wrote:blue temp sender?

Thanx Gareth.. i noticed wire split just above the terminals. i've not used the 335 for the past 4 months due to my office related issues.

Sun Dec 20, 2009 5:58 pm

blingsta wrote:all of the above mate, black smoke = fuel related... could be related to plugs, TB.. change the plugs and clean the body ! does it drive ok ?

clean TB, new plugs, clean injectors, drain tank and add new octane, .....but, still missing and back fire and hesitate to move.

Finally, called a M30 electrican, and he said AFM not working.
But how to test it? AFM repairable ? tomorrow, going to replace and see if it's works..

Mon Dec 21, 2009 1:19 pm

Mine ran like $h1te which turned out to be a broken lambda sensor in the exhaust. Worth unplugging the sensor if your's has one, and let the ECU run on its default fuel map.

Blue temp sensor also likely, as Gareth suggested. Easy to measure its resistance when hot and cold, the correct specs are on the zone somewhere.

Martin.

Wed Dec 23, 2009 7:19 am

Thank you for the advise Maritn,
i fixed the temp sensor. but it was hesitate to move and giving back-fires.
Yesterday replaced the AFM ending with #027 (from an E32 for 15KD with one week warranty

).
start the car and wait for couple of minutes.............BACK TO SMOOOOOOOOOOTH idle.

i removed the intale pipe and check the AFM flap is working..

MERRY CHRITSMAS TO ALL ZONERS..
AND
HAPPY 2010

Wed Dec 23, 2009 7:27 am

Saw an E30 with M30 3.5 turboed here in Bahrain last week!!!

i was having my exhaust welded after it split and there it was in the bay next to me, having an intercooler fitted!!

Should have rain this weekend so you can get out and enjoy sliding about!!

Wed Dec 23, 2009 8:27 am

mrLEE30 wrote:Saw an E30 with M30 3.5 turboed here in Bahrain last week!!! ....rain this weekend ...and enjoy sliding about!!

Lee, any pics?? you should have taken some on your phone.
BTW, it's clowdy for the last 2 days here.
When it's rain, all those nissan GT boys and mustang-ers comes out to the school parking ground nearby and start doing ESTAARAAT (drift) till blow up their rear tyre.

WISH YOU MERRY CHRISTMAS and HAPPY 2010.

Wed Dec 23, 2009 11:13 am

no pics!

Here in Bahrain there is a long standing rivalry between BMW and Nissan boys, they say our BMW's run too hot we say their Jap things are slow!

Glad your car is fixed, enjoy the rain!

Sat Dec 26, 2009 5:49 pm

...and youll find more crashed cheep-jap-craps in junk yard. 350z is there on top of the crash-list.

found this M30 turboed motor by miller with MAF conversion (no idea how much it's cost..) But looks clean with 300+whp

[img][img]http://img189.imageshack.us/img189/8862/m30turbo.jpg[/img]