smokes after takeoff

[sleeepy240]

my s13 puts out a decent amount of a darkish gary smoke when i first takeoff after idaling. i also have my emission stuff off. it also idales bout 1,000 to 1,100. any ideals wil be appreciated

[rogoman]

A good way to test for oil burning is to first fully warm up the motor.Stand behind the car. Have someone rev the motor to 4,000 RPM and hold atthat RPM for about 15 seconds. If you see a lot of blue smoke come out ofthe tailpipe, the motor is burning excessive oil; Time for new rings.

If your engine continues to idle real high after it's warmed up, check the air regulator unit. It's located on the passenger side of the engine, below the intake manifold, near the rear. There's a hose connecting to it. Pinch the hose when you are having the high idle condition. If the idle speed drops, there's a problem with the unit. Also check the electrical ground connections on the engine for looseness and oxydation. Another thing to check for is a vacuum leak somewhere along the intake plenum between the Air Flow Meter and the Throttle Valve. Check all the nuts for tightness that fasten the intake system to the engine.

[sleeepy240]

thnks 4 the ideals i'll try it out nd post back

[H8tred]

As far as the smoke goes, if it's only at take off, or throttle tip in, and stops after a second or two, it's most likely your valve seals.

[badintentions]

probley valve seals u dont hav a turbo right if you do it could be turbo seals and do u have a smoke cloude when u first start it if so definatly valve seals

[sleeepy240]

i havent noticed if smoke comes out when it first starts up. i drove it yesterday nd it was smoking constantly, but light, but enough 4 me 2 c it. when i first take off it smokes 3 to4 times out of 5. i dont know if its just me, but it seems like it got alil worse after i changed my oil pan gasketnd added new oil. would having my emission stuff off cause the problem?

[bigperk11]

sounds like a bad ring.

Try a compression check

[H8tred]

What was your old oil, and what did you replace it with? Sounds like you went form conventional to synthetic.

[sleeepy240]

i never use synthetic. only vavoline conventional, but i did put n sum of that lucus oil stablelizer. unfortchently im out of town till tues. so i cant try any of these ideals right now. so as soon as i get back i'll put sum time n the garage nd i'll let u guy's know whats going on. thnx 4 all ur help so far.

[sleeepy240]

heres the update guys. i pull the spark plugwire out 2 do a compression test nd the bottom of the wires were soaked n oil. at 1st i thought it was just the sparkplug seal not snoged down enough. so i pulled the plugs out nd they were soaked n oil also. so i replaced the plugs nd wires then did a compression test nd here r the results #1-125psi #2-130psi #3-129psi #4-125psi. i read on another post that 180psi is gud. from my results looks like i need new rings.so i warmed up the engine when i was done with the compression test nd when it first started it blow out blueish smoke. then it idaled w/o smoking then i reved the engine then it started smoking at idale or reving it. i couldn't hold it at 4,000 rpm cause i live n a complex nd my exhaust is way 2 loud.

[leonelrr]

I am having the same exact problem with my chuki.. I thgt it was my rings.. I need to do a compression test.

[sleeepy240]

i just redid a compression test cause i didnt have it at wot the 1st time. here r the new results cyl #1-155psi #2-140psi #3-145psi #4-140psi. my buddies dad thinks its the head gasket plus he's got alot of experience. i've been doing alot of research here bout compression. bout what psi range is good. what i've read is around 140-190 is a good range? but i had another buddy say 90psi is good? plus i cleanded my maf. i started it nd let it idale 4 a bit. at 1st it was idaling at 1'000 then it slowly went down to 900 then it would slightly bog every few seconds nd slowly bounce back nd forth from 1'000 to 900. after bout 5min or so it was slowly bouncing from 900 to 750. once it was droping down to 750 i looked up nd noiced that my garage was pertty smokey. not sure if thats just from that garage door only being open alil bit.

hey leonelrr is ur's idaling around a 1'000 also?
Modified by sleeepy240 at 8:44 PM 9/27/2008

[rogoman]

The compression spec for the KA motor is:- Standard: 179 psi- Minimum: 151 psi- Differential between cylinders: 14 psi

Even though the compression readings are around the accepted minimum, it doesn't mean that the motor won't burn oil. If the oil rings are excessively worn or broken, the motor can still show good compression.

[sleeepy240]

i realy dont think the rings r worn cause the engine was completly over hauled nd its only been driven maybe 30 nor 40 miles, but its been sitting 4 bout a yr with the w rings n. if ur timing is off on the timing chain's nd u bend a valve from the piston hitting it. could that crake a ring? im just so tired of u looking at my car sit n the garage nd not being able to drive it.

[sleeepy240]

hey guys does any 1 know if the air injection device that plugs n2 the exhaust mainifold is nesisary? if so were does the small vacum lines go nd come from?

[johnnyballs180]

hey guys does any 1 know if the air injection device that plugs n2 the exhaust mainifold is nesisary? if so were does the small vacum lines go nd come from?

are you talking about the turbo?? lolon my sr20, there's two coolant lines and one oil line. the only pressure (not vacuum because air is being pushed out) line goes to the waste gate. the waste gate should be coming from either your hotpipe, the pipe that sits between the turbo and the intercooler, or you can tap off of another pressure source. my greddy fmic didn't have a nipple to tap off of and i'm too much of a lazy *** to get one welded. i ended up tapping off of another source.

with my stock intercooler, there was a pipe that sat above my radiator fan shroud. it was a black plastic piece of crap that had a nipple going directly to the w/g. idealy, this hose is as short as possible.

not to threadjack, but here's a link to another forum (sorryyyyy). this helped me a little:

http://www.240forum.com/showthread.php?p=149830

[sleeepy240]

i dont have an sr n my 240 i got the daul cam ka. thnx for ur ideals tho

[PROJECTiMURA]

it's most likely going to be the piston rings. check all the vac lines!! if anything it can be the egr valve! u don't need that **** unless ur a tree huger! lol

[SR20DET.240]

I am going to agree with the others that it is most likely your rings, you are on the low side of the compression table and given the constant smoke. I had the same problem on one of my cars. I doubt it would be the head gasket only because usually when one of those goes bad the smoke is white. An easy way to check to see if it is a head gasket is to check the oil filler cap, if it has a white milky looking substance on it then there is a good chance you are getting water in your oil passages. If not then it is most likely your rings. Hope this helps.

[sleeepy240]

here's an update guy's. i had some extra time so i took it for a drive. at idale its not smoking, but when im coming 2 a stop it will idale bout 1'000then bog alil bit then die, but fire up with no problem.there is some smoke when i first take off,but i notice what is wierd is it wont smoke at every takeoff. if its idaling for a couple sec then it will smoke. i took it on the freeway 4 a couple of miles then took the streets back 2 my place. then i pulled n the garage an left it running nd it didnt die. i dont think its the rings cause its not skmoing all the time any more it was just that one time. weird. my buddy thinks its my maf sensor. i think it could b either valve seal or the air injection device that is on the driver side. to the right of the exhaust mainifold nd there's a tube that plugs n 2 the exhaust mainifold.