ok 2 87' TII questions
10-16-06, 11:48 PM
#1
ok 2 87' TII questions
first of all, ive noticed that when i start up my car, a cloud of grayish smoke comes from my exhaust but it stops like 5 seconds after the cra is already on, and also when im boosting at high rpms the car also smokes the same grayish smoke, any idea what that could be? and also how do i adjust the idle on my TII? it idles high (around 1500) and jumps up and down from about 1200 to 1500RPM. however the idle will go down if i pull up on the gas pedal but it will still be a jumpy idle from 700 to 1000RPM what causes the jumping idle?
10-17-06, 10:26 AM
#5
HAILERS
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Let it be KNOWN that the ECU all by itself ADVANCES the timing when you over approx 1100 rpm. When that happens the idle will go up to about what you describe, 1500 rpm.
When you have the brake on and let out on the clutch when in gear to cause the rpm's to drop down, you get the engine under the 1100 rpm figure (ECU advance) so now when you get out of gear again and let off the clutch, the rpms stay down below the 1100 figure.
If you just tap the throttle for a moment to make the rpm's go over 1100 again, the rpm's will advance to the 1500 figure once more. An you can repeat this until you run out of gas. I'm just letting you know WHY the rpms are at 1500 rpms and WHY they stay below 1100 rpm when you do the clutch thing.
Basically, in my opinion, you need to go to square one on setting the idle of the engine. Start with a timing light with the rpms below 1100 rpm and work your way out of this vicious cycle.
When you have the brake on and let out on the clutch when in gear to cause the rpm's to drop down, you get the engine under the 1100 rpm figure (ECU advance) so now when you get out of gear again and let off the clutch, the rpms stay down below the 1100 figure.
If you just tap the throttle for a moment to make the rpm's go over 1100 again, the rpm's will advance to the 1500 figure once more. An you can repeat this until you run out of gas. I'm just letting you know WHY the rpms are at 1500 rpms and WHY they stay below 1100 rpm when you do the clutch thing.
Basically, in my opinion, you need to go to square one on setting the idle of the engine. Start with a timing light with the rpms below 1100 rpm and work your way out of this vicious cycle.
10-17-06, 11:13 AM
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Smoke could be because you are running rich. I wouldn't worry about too much unless it smells sweet or you notice oil in your coolant or your motor is consuming ALOT of oil.
10-17-06, 11:34 AM
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The smoke thing could be a problem if it happens everytime you start your car, even if you were driving it around a few minutes ago. If it only smokes after it has been sitting overnight, its normal. You know this already, but when the engine is stopped and cools down a little oil will usually leak into the rotor housings. If you have slightly leaky injectors, the smoke may be from fuel leaking from them, although if they are too leaky the engine will flood.
White smoke means there is coolant or moisture in the engine, and is very bad. Black or grey smoke is from a carburizing gas mix, meaning there isn't enough oxygen to burn all the carbon (i.e. oil, gas, etc). This is like working with an oxy-acetylene torch; before you adjust the oxygen feed you have to ignite the acetylene, which burns in atmosphere forming a very fine black soot that you can see (this stuff will invariably show up the next time you blow your nose, by the way). Once you adjust the oxygen feed it makes a nice hot, clean flame with no smoke.
I think.
White smoke means there is coolant or moisture in the engine, and is very bad. Black or grey smoke is from a carburizing gas mix, meaning there isn't enough oxygen to burn all the carbon (i.e. oil, gas, etc). This is like working with an oxy-acetylene torch; before you adjust the oxygen feed you have to ignite the acetylene, which burns in atmosphere forming a very fine black soot that you can see (this stuff will invariably show up the next time you blow your nose, by the way). Once you adjust the oxygen feed it makes a nice hot, clean flame with no smoke.
I think.
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10-18-06, 12:47 AM
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Yeah going to your leak problem I have the samething! One of the gurus told me that it is a return line! That it is one of the most common areas where leakage occurs! So you might want to get it checked out or figure it out on your own! I would've of done it by now, but my financial problems are growing! Which really sucks! Cuz i need a drive shaft now! gosh!!!! But yeah it could be a return line from the turbo!
Hasan
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