whats up? some of you might remember me posting pics of my recent na build :
headgames head, buddy club spec IV, spoon cam gears, mugen headgasket, 81mm ctr pistons, portmatched 50mm twm itbs 440injectors, 255lph fuel pump etc.

well obviously somethings f*cked up w/ my motor. went to get it tuned today and now i am very depressed and still mad broke. starting off, whenever the car was started it would smoke out of the exhaust. a few adjustments were made,the idle was corrected and the smoke basically dissappeared. up to around 4k rpm the car ran ok, but after that loads, i mean LOADS of smoke poured out of the exhaust. the smoke was white in color but smelled like mad fuel even w/ correct a/f ratios (my clothes still smell of fuel ). towards the end of the tune it started smelling alittle more like oil. not to much oil was burned though. tuning made a minor differnce,at higher rpms smoking increased.

a leakdown test yeilded results that were all definatly less then 5%. a compression test was performed and all cylinders were between 250 -265 and on top of that, richening or leaning out the motor could not get us over 160 whp not matter what was tried??? we trouble shooted **** forever and could not figure out wtf is goin on. new plugs, checking timing, swapping distributors.. basically anything you could do without physically crackin open the motor was checked and everything seemed to be fine.
anyone have the slightest clue of why my motor is putting out **** for power and smoken like a blazin chimney? i will not mention any names but the tuner is definatly a reputable guy that knows what he is doing.
i jus want my car back!
btw the car was pretty much finished bein broken in on the dyno when i first got there, it might have had 5previous miles?..


Modified by aziantegger10 at 5:20 AM 4/5/2006

 

Paragraphs please. I'm having a hard time deciphering what you're trying to say.

 

Have you done a leak down test?

The white smoke is obviosuly the root of the issue.

 

why would you keep beating on the car if it obviously was not running properly?

what head bolts are you using?

 

White somke - I'm thinking it might be the headgasket. How many miles are on this build?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by citrus3000psi &raquo;</TD></TR><TR><TD CLASS="quote">Have you done a leak down test?

The white smoke is obviosuly the root of the issue.</TD></TR></TABLE>

White smoke---- coolent...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by citrus3000psi &raquo;</TD></TR><TR><TD CLASS="quote">Have you done a leak down test?

The white smoke is obviosuly the root of the issue.</TD></TR></TABLE>

leakdown test was done as mentioned. all results were good!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2R &raquo;</TD></TR><TR><TD CLASS="quote">why would you keep beating on the car if it obviously was not running properly?

what head bolts are you using?</TD></TR></TABLE>

arp, the only reason we kept trying to tune the car is because coolant level did not drop a bit, and the smoke smelled like fuel so badly. that is why it is so ironic.

 

could also lye in the engine management.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bradstard &raquo;</TD></TR><TR><TD CLASS="quote">White somke - I'm thinking it might be the headgasket. How many miles are on this build? </TD></TR></TABLE>

about 5 minutes when the motor was completely done, while we checked over everything making sure **** was good, then whatever the amount of time we were on the dyno.

 

engine management was neptune.

i know its typical that white smoke means coolant, but how come coolant level remained the same? and how come it smelled like fuel so bad in the beginning, and towards the end reaked like oil..

 

i know you said the smoke smelt like fuel and was white, but i'd change the oil to see if there's and metal/coolant, or anything else in it

 

i bet the wideband O2 sensor that was being used is trash, either that, or your tuner sux. if the compression and leakdown tests came out ok, then the motor is fine.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SecretAgent &raquo;</TD></TR><TR><TD CLASS="quote">i bet the wideband O2 sensor that was being used is trash, either that, or your tuner sux. if the compression and leakdown tests came out ok, then the motor is fine. </TD></TR></TABLE>

the sensor was 2 days old, after my car was wrapped up a nother car was tuned via same wideband etc and had no problems. something is obviosly wrong despite the test results..and compression and leakdown tests do not mean the motor is always fine. and i highly doubt the tuner has anything to do with this.

 

then there is something wrong with your neptune. think about it, if you've checked everything else....process of elimination dude.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SecretAgent &raquo;</TD></TR><TR><TD CLASS="quote">then there is something wrong with your neptune. think about it, if you've checked everything else....process of elimination dude.</TD></TR></TABLE> try ems or power fc ...power fc owns me, and i have no complaints with my itb setup either.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SecretAgent &raquo;</TD></TR><TR><TD CLASS="quote">then there is something wrong with your neptune. think about it, if you've checked everything else....process of elimination dude.</TD></TR></TABLE>

ok dude, so i guess the neptune is causing the smoke?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aziantegger10 &raquo;</TD></TR><TR><TD CLASS="quote">

ok dude, so i guess the neptune is causing the smoke?</TD></TR></TABLE> it may be causing the fuel to be dumped in all crazy. thus making it harder to burn, and in turn smoking, and spitting out raw fuel. TRY ANOTHER STANDALONE UNIT

 

this same thing is happening to me... i just got my car back also and i just finished building everthing and i just got my twm's i put everthing to getter and it smoke white smoke also i dont no y... and the coolant level is still the same... its also burning oil but not much... i would like to see y yours is doin this because mybe its the same thing as mine... if i find out y mines doin it ill let u know

 

I'm sorry but if it's a freshly built motor with 5 miles on it and it's smoking like you say then there is something seriously wrong. I don't think I would be dyno tuning it with 5 miles on it. Start by chaning the oil. Inspect it. If you say that the o2 sensor on the dyno looked good then I would pull the head. Inspect the head gasket. I'm willing to bet that will be your problem. What did you torque the head to? Did you follow the pattern correctly? Also, did you do the labor yourself of pay someone to do it?

 

I doubt this is an engine management issue. definitely seems mechanical to me. if it was fuel, assuming that O2 is working and configured properly, the a/f ratio would be retarded. I agree with bradstard, check the gasket.

 

don't get too down on yourself.

just take a couple days off and come back to the problem, figure out what it is - smoke is obviously a problem.

it could be something simple or gross mistake, or something mechanical (more than likely).

take it from someone who has been through the ups and downs of such a build.

this is something that isn't commonly posted - most people just say stuff like "look at my 300whp bseries dyno!" and make no mention of the previous 3 builds that blew the expletive up.....

 

Are you running a cat? (not a feline) The gas smell was probably just burning off extra gas from the exhaust, that could explain why it changed to a more of an oil smell.

 

I agree with the above headgasket suggestions. Probably best to remove the head to see what's going on.

5 miles sure isn't very much time for a motor to "settle in"

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 88 rex &raquo;</TD></TR><TR><TD CLASS="quote">I agree with the above headgasket suggestions. Probably best to remove the head to see what's going on.

5 miles sure isn't very much time for a motor to "settle in"</TD></TR></TABLE>

Bah, I broke my current motor in on the dyno, followed by the track With boost

It's more like religion than science, some people have luck with both break in methods.