b18b25psi

ok heres the deal, my car is burning a lot of smoke out of the exhaust only under boost. vacuum is fine, compression test revealed that everything is ok, no oil leaks, so im left to scratch my head. the motor is virtually brand new (600 miles) and it doesnt smoke at idle, only when there is a load on the motor, but it gets bad under boost. when i pull the car to a stop, it'l smoke for around 10 seconds then stop? what is the deal? any ideas? motor settup is built ls block, b16 head, 60-1 turbo, aem standalone, all the goodies? help is appreciated

Mr. Softee

sounds like rings

KekeK-18

shouldnt be the motor, I guess its either your turbo or your oil feed or return lines. look if there's any oil there.

bmm89

i had some problem, turned out to be too much pressure on the feedline, maybe a restrictor

b18b25psi

cant be rings, vacuum is 20 inches of mercury

b18b25psi

theres oil residue on the return to the moroso pan, and a slight leak, and my distributor is leaking a lil too, whats up with that?

NotQuiteJdm

son of a bitch's smoke?

b18b25psi

i presume they do deuche bag just kidding, well literally my car is smoking a lot so i felt the simile was appropriate. and thanks for your profound insight and i bet you wish your car was as jdm as mine

92JDMSiR

are you positive it's oil and not gas???

Ri5e

I'm sure its your turbo, return line must be too restrictive. I had the same problem, at idle its fine but when you boost it and then slow down it starts puffing smoke for a few seconds then stops after a few seconds

BoostinDC2

check the turbo

b18b25psi

it smells like a mixture of fuel and oil, its a pure white smoke, no grey black, or anything, really white, smells like fuel, but how can it be?

turboex

ok get this when i put my 450 dsm injectors in with the resistor box and nothing to controll them my car smoked like a biatch. and no it was not black smoke. everyone says if its fuel its black, but if its really rich it will blown white smoke. ok so then i put my old injectors back in and it goes away. my car also does this now when i start it up due to the hondata base map i have, its super rich. but it goes away after a few secs. an no its not coolant as my compression test and leak down were great and its been doing this every morning for the last 4 months and i have not lost a drop of coolant yet. I hope this helps. i just hate it when people say there motor smokes and everyone asumes its a blown head gasket. Good luck with your problem. Oh also, did you ever see a hooked up nissan skyline get on it? they smoke like a train due to the ton of fuel thats dumped in there, and yes its also white smoke.

b18b25psi

the shop who built my car says its just running rich, which i always expected, but ijust wanted to see what the honda tech guys would say, thanks for your input dude

synergy004

I have the same identicle prob. At idle no smoke, at boost white smoke then goes away. I was told running rich and possibly turbo seals.
I havent lost a drop of coolant and oil levels are good, compression test was perfect all the way and did a leak down test which was great.

b18b25psi

turned out to be the #3 piston ring, mother ******, i hate pulling motors apart

abraunb16

How much breakin did you give the motor?

b18b25psi

we broke it on for 200 miles on the dyno, then tuned it up to 20 psi, then i drove it for 300 miles with no boost, then once i started boosting it, **** started to get fucked. im selling the car anyway, so ill just fix the bottom end, and park it till i get a buyer with cash or something nice for a trade

abraunb16

Man that's harsh, I was told my motor only needed 50 miles on it and I put 600 plus before I did any boosting, then over 1000 before I add a decent amount of timing. The motor was built tight, but I didn't want to take any chances. I only used the dyno to check my a/f during breakin and continued to up the rpm's as time/miles progressed. Best of luck, I'd just freshen up the bottomend and take it easy this time around.

boosted3g

Same thing happen to me a couple of weeks ago. I decided to see what my motor had and i left he nitrous off. Cranked the boost up to a little over 30 and when i got home the car woulnt idle for ****. When i pulled the motor apart the thrust bearing somehow flew out and lodged itself in the #3 cylinder scrapng mu cylinder wall all up. oh well time for another sleeve job. Its on its way Vince