I have done the reading and still no luck!

[Dr.Noisewater]

When purchased my 91 240sx KA24DE was puffin white smoke out the exhaust. I assumed it was the head gasket. We ran a compression test and I ran 150 in every cylinder. So no head gasket issue? I'm just keepin it NA for now. I purchased some valve stem seals and I hope that is the issue. I might have worn/bad rings due to the compression numbers? However I would just like to talk about some issues if anyone is around!

[Razi]

I'd check the valve seals.

[GO240]

sea foam it i use to get on the high way and just haul a** and i white ploom of smoke fogged everyone behind me then i seafoamed it runs fine now

[Dr.Noisewater]

Thanks guys I'm glad im on my way. I planed to do both of those in the days to come. Wish me luck!

[GO240]

good luck bro

[Dr.Noisewater]

since you are online have some questions for ya.... or anyone for that matter!

[Dr.Noisewater]

Well I will leave this for anyone up for a convo! I bought my 91 240sx NA KA from a guy who was more worried about the exhaust, rims, and burn outs. I'm a big dumb*** for purchasing it form him. This car means a lot to me and know I will need to rebuild her soon. I want to rebuild her for boost when I do so btw. However until then I have been trying so hard to clean her up and fix things that the retard I bought it from just could not handle doing. You guys know hard stuff for experts like oil changes, new plugs and wires ect! lol I just wanna get my white smoke gone and get all I can from it as of now! Anyone have any tips or ideas I might have over looked????

[Dr.Noisewater]

NICO don't let me down!!!!!!

[-RJ-]

do what go240 said, try running seafoam through your engine.

oh i just noticed your in norfolk va... cool lol

[Dr.Noisewater]

Alright I plan on doing so much work this weekend. I however do not have the cash to pay my friend/mechanic who is helping me. So I was wondering since you are in the 757......... Text me up man! (757)470-7666

[wa-chiss]

White smoke is water. If it smells sweet, you're burning antifreeze meaning headgasket is blown. If it's only smoking a little bit on cold starts and stops when the engine is warm, it could just be condensation in the exhaust. Still smell it though.

Blue smoke is oil. Bad rings, valve stem seals, bad PCV valve, and even a blown head gasket could cause burning oil issues.

So, if it's white smoke, don't bother with the valve stem seals just yet. When you did the compression test, was the engine warm or cold? I bough a car with a blown head gasket and it wouldn't leak until the engine got up to opperating temps and the T-Stat opened. You can buy a kit to test your antifreeze for carbon (I think carbon). If the HG is blown, there will be combustion gasses entering the cooling system. The kit is just some paper strips that turn a certain color when it touches carbon.

Or, you could remove the radiator cap, turn the motor over by hand, making sure to stop at every cylinders compression stroke @ TDC and look for bubbles where the cap would go.

[Dr.Noisewater]

Thanks for the help first of all. I knew about blue smoke being oil and we did the compression test with the engine cold. It wasnt even running just turning over since I had some parts off at the time. Now I'm worried again thinkin its a head gasket issue. Crap aside from that I have another question for the masses. I dont need all the EGR crap where I live and I cut the EGR pipe to get my Intake mani off anyways. Could anyone help me with the list of items I can remove and/or what vaccum lines I need to plug!!! I'm losing it! Does anyone know any mechanic who will help me in VA for free?????? Didn't think so.... Thanks anywho guys.

[wa-chiss]

all you really need are the vacuum line to the brake booster, vacuum line to the fuel regulator, and the IACV. Anything and everything else can be removed and the vacuum ports can be capped off.

[Dr.Noisewater]

The only issue I have with removing the EGR system is that I think it will give me a check engine light. Which isn't that big of a deal I just hate it. Are there any tricks anyone knows to not have the light trip?

[Razi]

Also, make sure to block off the EGR properly.

[Dr.Noisewater]

I know of a kit I can buy from the zone if it will do the job?

[trackslut240]

an egr block off plate, make one out of thick straight metal or one from ebay is cheap, ebay one is what i used, mine is a 93 and it never gave a check engine light with the egr off(maybe my computer dont care), a block off adapter for the exhaust or just a weld it shut at local muffler shop. make sure u cap off or remove extra vacuum hoses coz a vacuum leak will compound your already running car. might i suggest sort out the white smoke before doing anything else. good luck

[ddgsxr504]

The only issue I have with removing the EGR system is that I think it will give me a check engine light. Which isn't that big of a deal I just hate it. Are there any tricks anyone knows to not have the light trip?

Pull the gauge cluster out and remove the bulb that lights up the CEL. That's what I did.... lol

[Dr.Noisewater]

Some say it does not throw the light some say it does so I wonder what will happen with me. I'm gonn keep it for not but where would I find another EGR pipe since mine was cut off for intake removal. Any more help would be great. And how do I know what model 240sx I have? Base? SE? I have a sunroof if that helps!

[ddgsxr504]

There is a thing on the net somewhere that decihers your VIN # to tell you what kind of car you have.... let me see if I can find it.

Finding an EGR pipe??? I would assume the dealer or a junkyard or finding someone online who is parting out a wrecked car.

[-RJ-]

Some say it does not throw the light some say it does so I wonder what will happen with me. I'm gonn keep it for not but where would I find another EGR pipe since mine was cut off for intake removal. Any more help would be great. And how do I know what model 240sx I have? Base? SE? I have a sunroof if that helps!

pick n pull