If one boston is rare... (Passed smog today!)

That was my thought too, I swapped with some others I had in the garage, but that didn't help... I'm gonna try the boots first and see if that makes it stop

You need the NGK +R's


thats what it says on the plug... idk the code for em

So, the other plugs didn't help?

Oil must be in there.

Take each coil out, and take an air compressor and blow in there until they are completely dry.

The NGK BKR6EK plugs are the ones to get. Strange though. Someone on my local BMW CCA forum recently had issues with skipping, and it wound up being a bad CPS. It's worth thinking about, anyway.

Hmmm, ok thanks guys. I'll get all the oil out before I put the new boots on.

I have the NGK BKR6EK plugs in there now, and they have the +R on them Franklyn. I guess it could be failing coil wire harness too.

Ok got lots of parts, now just need time to install them.

Will update with pics as i get stuff done

this thread doesn't have nearly enough pictures to be a build thread!

I know, but its too dark when I have time!

In other news, I have dinan throttle body (3" version)

Valve cover gasket, new spark plug boots, and clean ICV fixed my miss at idle!

M-contours are on the way, along with a new cluster and sun visors too

i happen to have an M3 MAF sitting in the shop if you happen to need one..

Thanks man!

Ok so I failed smog today, hydrocarbons 328 max allowed 220.

Help me smog experts! The good thing is that a Check engine light came on. Will edit after I read it.

*Edit: Mass air sensor, but I threw that code when I unplugged it once while running. More research is in order.

Sooo glad I don't have to do that crap.

Seems pretty high, everyone else says seafoam, so why not right?

I have the can in the garage, I just haven't gotten around to it yet.....I guess I'll try that soon.

Does it cost to redo your smog?

Originally Posted by crisscross

Thanks man!

Ok so I failed smog today, hydrocarbons 328 max allowed 220.

Help me smog experts! The good thing is that a Check engine light came on. Will edit after I read it.

*Edit: Mass air sensor, but I threw that code when I unplugged it once while running. More research is in order.

well how coincidental! lol hope it works out dude, no emissions test here so i have no idea what you are going through

do you have cats?

Originally Posted by E36youngster

well how coincidental! lol hope it works out dude, no emissions test here so i have no idea what you are going through

omg me neither yayyyyyy

Yes I have a cat, not two....someone replaced it at some point.....that could be it.

I found another code for the intake air temp sensor, so i'll swap it from the 325 and see if that works.

Does anyone know if intake air temp sensor would cause a missfire? I know def know it would cause a closed loop rich idle, and I guess that could cause a missfire?

Thoughts?

Ok so I got contours and tires all mounted up last night....I will post pics tomorrow after I get home from skiing tomorrow and get her all washed up. I may try to smog again tomorrow....I'm slowly making progress on all the little things.

So far I have done:

New sun visors
Replaced cluster
Fixed side skirt
Replaced rear suspension with sach's shocks and H&R springs
Sparks plugs
Coil boots
Intake air temp sensor
No name CAI
Found out I have Dinan throttle body
Contours and new tires
Replaced fog lights
Turner RSM's
Replaced missing panels in the trunk
Fuel filter
Mobil one oil change
Cabin air filter
Vavle cover gasket
Cooling system overhaul

And I have only dirven it about 600 miles

Good job!

How does it drive now?

Wat is the seafoam thing i keep reading about and wat does it do?

Sent from my PC36100 using BimmerApp

google: seafoam

alan, thats an impressive list for 600 miles. Hurry up and make it pass smog now

Originally Posted by FenderBender

Does it cost to redo your smog?

Yeah it costs to redo it whether you pass or fail. Its around 20 bucks, and we have to do it every year.

Originally Posted by FenderBender

Good job!

How does it drive now?

Thanks! It pulls really hard now.....I just want to mod the hell out of it, but I need to get it registered and all my maintenance done first.

Originally Posted by TRaV MaNN

google: seafoam

alan, thats an impressive list for 600 miles. Hurry up and make it pass smog now

I may try again today, it seems like its not idling as rich now that I repaced the IAT sensor that threw my CEL.

Originally Posted by crisscross

Does anyone know if intake air temp sensor would cause a missfire? I know def know it would cause a closed loop rich idle, and I guess that could cause a missfire?

Thoughts?

no. i have not come across any instance where the air intake temp sensor caused a misfire. running rich would also not cause a miss. it would bog, run like poo, and co would be through the roof, not hc.

hc is a misfire indicator, so i would be looking faulty ignition (coil/plug/boot), or, if caused by a lean mis, faulty injector.

a cat would not cause a misfire, so i would not worry about that at this time.

find the cylinder that is missing and then do this. swap the coil with one cylinder, and the plug with another cylinder. see if the miss moves. if it does, then you have found the defective part. if it stays at the same cylinder, then you car going to be looking injector or valve issue.

good luck.


df

Thanks df, I am having a hard time locating the misfire...its OBD1 and I'm not getting a code. Should I disconnect one plug at a time when its misfiring and see if I can locate it that way, or do I need to have it hooked up to a computer?

It seems to only miss at idle after running at constant rpm when the engine is warm, like on an offramp after driving on the freeway. It doesn't miss when cold.

The car seems to run alot better after I replaced the IAT sensor.

Have you checked for leaks around the ICV or cleaned it?