Author Topic: 85% Opacity = Emissions Failure (Read 6692 times)

somolovitch3 · « **on:** January 01, 2007, 09:28:53 pm »

'81 Caddy with 168428 miles showing
NOT even close to 35% need for to pass
Ideas?
Help?!
***zofelepantness!!!!!!!!!

jtanguay · « **Reply #1 on:** January 01, 2007, 09:41:02 pm »

retard the engine and get it REAL hot for the test (30 mins highway driving)... also back out the fuel screw to decrease the idle rpm... try to get it bang on 800rpm. it should pass no problem. it should idle really rough, but who cares? turn it back up when you're done.

hmmm thinking about this again... i know that retarding a gasser engine will give lower nox emissions... but as for diesel opacity would it be better to have advanced timing or retarded? I would think that advanced would give additional time to burn the fuel... anyone else have any input???

somolovitch3 · « **Reply #2 on:** January 01, 2007, 10:49:50 pm »

Bloody holidazes!
Am having comp/timing/injectors tested come Wed the 3rd
Was thinking advance timing a few .mm (well, more than a few?)
Thing goes through oil at 50mpq
Rebuild time?
Anyone have mo-mo to be rebuilt/throw in while rebuild goes on?
rino***z!!!!

wyldman · « **Reply #3 on:** January 01, 2007, 11:03:41 pm »

Back the fuel screw out,and lean it out as much as possible.You should be able to clear it right up.

745 turbogreasel · « **Reply #4 on:** January 02, 2007, 03:26:35 am »

Reroute the blowby away form the intake? :twisted:

LeeG · « **Reply #5 on:** January 03, 2007, 01:32:38 am »

anyone have any experience with using synthetic oil to reduce smoking from blow by?

I have been reading up on it and the higher flash point should reduce the amount that gets burnt......maybe?

I need to aircare my IDI this week to make it more saleable so I can start driving the 'new' TDI thats waiting in the driveway. If it fails I think I'll change the TDI oil and put the old synthetic into the IDI, see if it makes a difference. There is only a couple weeks driving on the oil according to the reciepts that came with new car.

I think rather than back out fuel I would try disconnecting LDA.

Advance or retard timing to reduce smoke? I had someone with HID headlights tailgating me tonight, providing my own emmisions analysis lab. It seemed it may have smoked less with the cold start out, but I didnt get enough time to really decide before the other driver found a chance to change lanes and get away from that smoky car that kept speeding up and slowing down

Dont you just love how those headlights make the smoke show up?

Any other tips?

BTW: 50 MPQ oil consumption...thats way up there, it may not be possible to get that to pass.

jtanguay · « **Reply #6 on:** January 03, 2007, 03:22:51 am »

50 miles per quart??? wtf...

still doable.. put synthetic it, and yes it won't burn like dino oil. advance it to around 1.05 and back the fuel out... make sure it idles real rough... im tellin ya... you will think it is going to vibrate to death type idle :lol: like my old diesel jetta. and it will pass no problem. how do they test diesels over there? actually bringing it up to speed? that sucks... here is just smoke visiblity test at IDLE

.

so disconnecting the LDA would be a really good idea then. also put in some fuel conditioner too that always helps power service makes a good one that i like.

LeeG · « **Reply #7 on:** January 03, 2007, 11:21:13 am »

In BC, Greater Vancouver area, aircare is tested basically as follows: visual check for a cat, test of gas cap, test of newer cars for fault codes related to emissions, then a run on a chassis dynometer to simulate some kind of 'normal drive' including idle, stop and start and highway speed cruise. Diesels are just checked for opacity, maximum score allowed is 30%. They will do an idle only emissions test if your vehicle wont work on their dyno for some reason like too low or too much tire.

I'll try mine as is with cold start pulled, if it doesnt make it I'll try oil change to synthetic and reduced fuel. thanks for tips.

somolovitch3 is the guy with 50 MPQ oil use, mine isn that bad, but bad enough at 2l/1000km.

somolovitch3: any updates?

Benjamin · « **Reply #8 on:** January 03, 2007, 12:06:43 pm »

emission test in belgium is at max rpm (till the feul cut jump in), so this is a big problem when you did the governermod because it will rev your engine death. they keep a couple seconds this max rpm, a sensor in the exhaust measure the smoke in the emision.

people who never drive the car in max rpm got problems to pass the emision test becouse the exhaust is full of black and it comes out when the guy for the test pull out max rpm.
Some guys put a other feul in the dieseltank (the thing you can use for warm up the house). they drive the dieseltank till its almost empty, they put 10l in the tank, go to the technical control, once passed they fill up the tank with diesel becouse if you drive to much km's with this stuff you will have a pump failure.

Greetz, Benjamin (sorry for bad english)

LeeG · « **Reply #9 on:** January 03, 2007, 02:19:05 pm »

Quote

(the thing you can use for warm up the house).

you mean kerosene? (AKA parafin oil in the UK?)

That full RPM pull you described.....under load on a dyno or just free revving? Sounds more like a way to remove older vehicles from the road by breaking them than a good way to test emissions!

Benjamin · « **Reply #10 on:** January 03, 2007, 03:46:05 pm »

@LeeG: its free revving :x not on a kind of dyno or something. the gearbox is in neutral, and the pedal to the metal for a couple seconds after the feul cut jump in.

gassers are tested on idle in belgium but thats another thing.

Greetz, Benjamin

LeeG · « **Reply #11 on:** January 04, 2007, 12:44:12 am »

Well, plan A didnt work. Took it to aircare without touching anything and it failed by 5%. Drove around the block, disconnected the LDA and pulled cold start and tried it again, only failed by 3%. Boohoo. Guess I'll try an oil change on w/e and see what that does.

click to view larger
I thought the LDA disconnected would get me through looking at that one spike just after accelerating to 90kph.

This car is for sale BTW. Someone buy it and save me the hassle. Then I can drive my TDI.
http://vancouver.craigslist.org/car/256807563.html
discount for existing vwdiesel board members!

somolovitch3 · « **Reply #12 on:** January 04, 2007, 01:51:30 am »

Since I live in Utah, the way it is done here is to "dyno" it at 30% and at wot under "Load".
Not to sure if running "K-Juice" would work...So far the shop has informed me that I am one tooth off :evil: on the basic timing and have not done the injector or compression tests. :twisted:

somolovitch3 · « **Reply #13 on:** January 04, 2007, 02:01:50 am »

BTW :twisted: lda disconnected BIG TIME!!!
1.6 N/A :oops:

somolovitch3 · « **Reply #14 on:** January 04, 2007, 08:05:16 pm »

Got the compression test result today: :cry:

cyl 1: 380 psi
cyl 2: 330 psi
cyl 3: 330 psi
cyl 4: 425 psi

Any one have a short block? BTW what does a 1.6 engine weigh?

Author Topic: 85% Opacity = Emissions Failure (Read 6692 times)

745 turbogreasel