smokin'

[Malac0da13]

ok i have a 92 240sx vert....when i first start the car it doesnt smoke and continues not to smoke reving, driving, whatever...but if i jus let it idle for like 2 minutes then drive it it smokes like crazy whenever i give it gas any ideas? hope its nothing major....thanx

[le_ryan]

in most cases this is the valve guides, ive also heard it to be the pcv valve, try a search it will reveal wonders to you.

[Malac0da13]

i tried searchin on here and didnt find nething will try again tho

[Malac0da13]

oh and i forgot to mention when i rev it up and the smoke pours out the exhaust there is also sum smoke coming directly out of my cat

[teddy]

what color is the smoke?

[Malac0da13]

not sure if its white or blue...think its white...maybe a hint of blue ill i have to look closely next time

[Malac0da13]

ok i checked the color and i think its white...it was kinda hard to tell cuz its dark but it doesnt smell like burning antifreeze or oil it smells weird...hard to describe...not sulfer smell either

[teddy]

Check to see if your coolant level is low or if it's turning a mucky brown color. If one of these is true, then you're burning coolant or oil or both, possibly pointing to a headgasket problem. Is the car overheating?

[Malac0da13]

no it doesnt over heat...actually if im not on the gas that much and driving at like 60mph the temp drops to cold...that was going to be my next problem to fix

[Malac0da13]

oil n antifreeze check out jus fine oils gettin black cuz its almost due for a change but it looks fine besides that and coolant looks green like normal a lil low but normal

[180fan]

Check the color of the smoke more carefully.

white = coolantblue = oilblack = way rich

[Malac0da13]

its blue...i know that but i needa know whats causin or any ideas to y its doing it...it only does it when its been idling for like 5 minutes and then it only does itwhen i give it gas not at idle

[180fan]

pray it's something as simple as valve stem seals. It's usually the case, but could be something as serious as worn down rings.

[Malac0da13]

how can i find out for sure? Hopefully i dont have to rip the motor apart. please say i dont have to rip the motor apart...

[180fan]

Check it out the condition of your engine with a leakdown and compression test.

[Malac0da13]

how do u do a leakdown test...ive done a compression check b4 but never a leakdown

[Malac0da13]

never mind i found it...

[Malac0da13]

everyone might find this usefull rather then paying 80 bux for a leak down gauge u can make your own for like a 1/4 of the price....http://www.xs11.com/tips/misc/misc3.shtml