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Burning rich, white smoke on takeoff.

 
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Old 03-30-2010, 11:08 PM
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Burning rich, white smoke on takeoff.

Ok people, I've searched all over for an answer to this, but can't find anything. I have a 97 Prelude with a H22A4 and 130,000 miles on it. Once my engine gets warmed up and whenever I sit at a stop sign or red light for a bit, I'll take off and i'll have white smoke come out of my exhaust. It's not a huge cloud or anything, but it's enough that i can see it lingering for a few seconds in the air. It's like it only builds up whenever I idle at a stop, and all shoots out whenever i accellerate. Just got a new muffler, so i know it's not a clogged muffler.

The smoke smells like i'm burning off extra fuel. I took it to a shop and had a compression test done; 200 in each chamber. The mechanic told me that it was running hella rich, but i expect that from a honda. The shop also said that my head gasket was fine and there was nothing mechanically wrong with my motor. The only code that has popped up has been an EGR code. Cleaned that and had it checked, but it was fine. So, long story short, I can't figure out why it smokes like it does whenever it takes off. Any help is much appreciated.


also, my friend put a full tank of 87 in it a while back, would that have anything to do with it?
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Old 03-31-2010, 01:03 AM
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Re: Burning rich, white smoke on takeoff.

white smoke is moisture or coolant. if its cold you're more likely to get moisture in the exhaust system and it will look like you're burning coolant when its cold. but once the engine/exhaust system warms up it will go away. but since you're saying you only get it when your motor warms up tells me you're burning coolant. you can't say the head gasket is fine with out taking the head off. and if you take it off, you should replace it because chances are it gets damaged from removing the head. especially our cars getting as old as they are. and not to mention, the head gasket isn't the only way you will get coolant into the combustion chamber. keep an eye on your coolant level. have you been keeping track of your gas mileage?

1 tank of 87 won't effect the car.
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Old 03-31-2010, 05:33 AM
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Re: Burning rich, white smoke on takeoff.

Gas mileage is about 24 miles per gallon. The coolant level has stayed the same for the last month since this issue started. Another note; the engine is not overheating at all.

If I was burning coolant, wouldn't it be a constant stream of smoke? It only does it whenever I sit and idle for a while, and then take off.


btw, thanks for answering so quickly
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Old 03-31-2010, 05:40 AM
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Re: Burning rich, white smoke on takeoff.

Another note, I've kept an eye on the oil, It is not milky, like it would be if it had coolant mixing in with it.
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Old 03-31-2010, 12:30 PM
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Re: Burning rich, white smoke on takeoff.

your gas mileage sounds fine. and it doesn't sound like your coolant is leaking, if it is its not a very bad leak.

if its a very slow leak its likely you won't see it all the time. about the only time you will see it is upon initial acceleration because you're pushing out a lot of exhaust and you're barely moving.
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Quote:
Originally Posted by Si Speed
Drew can be a bigger asshole than me, and tell them in 16353 ways that they're a moron for wasting his time, and still not answer them.
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I am not helping you any more. you're a prick
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Old 03-31-2010, 01:12 PM
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Re: Burning rich, white smoke on takeoff.

Thanks for the replies and the help Beaker. I'll jsut keep an eye on it for a while. If anyone else has any suggestions or similar experiences, please feel free to add to the thread.
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Old 03-31-2010, 02:00 PM
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Re: Burning rich, white smoke on takeoff.

does the white smoke smell sweet?

could be oil too

you might have leaky valve seals
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Old 03-31-2010, 08:55 PM
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Re: Burning rich, white smoke on takeoff.

The exhaust doesn't smell sweet. It smells slightly like fuel. An update, the check engine light came on again today. It's the egr code. I know that it's not the egr valve. I just had it checked at a shop a couple of weeks ago, so that code must mean that my egr line is clogged. Think that might be the source of all my issues?
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Old 03-31-2010, 08:58 PM
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Re: Burning rich, white smoke on takeoff.

The clogged egr isint helpin matters.

seafoam will clear it all up.

as for the runnin rich...whats your average mpg?
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Old 03-31-2010, 09:20 PM
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Re: Burning rich, white smoke on takeoff.

he already said it. 24mpg.
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Quote:
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Drew can be a bigger asshole than me, and tell them in 16353 ways that they're a moron for wasting his time, and still not answer them.
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I am not helping you any more. you're a prick
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Old 03-31-2010, 09:27 PM
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Re: Burning rich, white smoke on takeoff.

my bad i missed that lol

the smoke is prolly oil. compression test says piston rings are fine. im thinking the valve seals may be leaky.

one of my friends had a celica with bad valve seals that had white smoke out the exhaust like bigrobD is describing
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Old 03-31-2010, 10:27 PM
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Re: Burning rich, white smoke on takeoff.

im guna have to say ur problem isn't running rich. when u run rich the smoke is black. ur burning oil bro.
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Old 03-31-2010, 10:44 PM
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Re: Burning rich, white smoke on takeoff.

stupid question....never used seafoam before, never had to use it before. how would i use?
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Old 03-31-2010, 10:56 PM
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Re: Burning rich, white smoke on takeoff.

ENG: DIY Sea Foam - Motor Treatment
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Old 04-01-2010, 08:21 PM
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Re: Burning rich, white smoke on takeoff.

Ok, I did the Seafoam treatment. It seemd to help, but after letting the car idle with intermittent revs for a while, i noticed that the exhaust, which only smoked on accelleration, smelled like the cat is stopped up......thus, another possible culprit. Any thoughts?
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Old 04-18-2010, 01:21 AM
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Re: Burning rich, white smoke on takeoff.

I am having this issue on my 92 Prelude as well. Did the seafoam reduce the smoke much?
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Old 04-20-2010, 06:46 AM
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Re: Burning rich, white smoke on takeoff.

As a matter of fact, no. The seafoam did not help the issue at all. Now, the smoke is constant. Ok, here is what the car is doing now. Check engine light comes on for an EGR code. The car does not overheat. White/light gray smoke come out of the exhaust constantly. Whenever I open the Oil cap after it's been running, I can see a steam that smells very faintly sweet. Whenever I open the radiator cap, the coolant shoots up about 2 inches, and the coolant, even though I have not added any since the coolant system got flushed, always appears to be overflowing. Car runs hella rich still, but like i said earlier, it's a Honda. There seems to be lost power, especially at lower rpms. The car is not losing much oil, and the oil does not appear creamy. I officially have no clue anymore as to what is wrong with it. Cleaning the EGR valve didnt help, having a local shop flush the coolant system didnt help, oil change and tuneup didnt help, SeaFoam sure as hell didnt help. Every shop I've taken it too says that it is not the head gasket. Any ideas people?
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Old 05-25-2010, 10:04 PM
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Re: Burning rich, white smoke on takeoff.

piston seals?
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