Smoking

how do your plugs look? if the smoke from the tail pipe is grey its fuel. if its blue its oil. sometimes if its a ton of fuel it could be blue.
 
well it could be running rich because of the egr being disconnected. now as for the rings im pretty sure the engine would be running pretty rough with bad rings. my engine runs smooth. lastly the smoke could be lighter because i get a lot of condensation from the dual tip magnaflow exhaust with no resonators. but ill update you guys as soon as im sure all the rain is gone. im gonna pull the spark plugs saturday hopefully and they should tell me everything. if its burning oil im pretty sure ill find some oil on the plugs same with if where burning coolant. and then ill just look and the color to check if its running rich and possibly run a compression test for the rings. i wish i could do a cylinder leakage test but i dont have the gauges

FlyinFINN said:
Did you check your oil level yet..
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no shane not yet. had loads of homework to do after finally going back to school. ive been really sick and lost my voice and all. i sound all squeaky and funny. lol anyways then i had to pick my mom up at 3 got to work at 5 had to leave early because of a bad toe and now its too dark to do anything effectivly
 
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boricuaguy18 said:
well it could be running rich because of the egr being disconnected. now as for the rings im pretty sure the engine would be running pretty rough with bad rings. my engine runs smooth. lastly the smoke could be lighter because i get a lot of condensation from the dual tip magnaflow exhaust with no resonators. but ill update you guys as soon as im sure all the rain is gone. im gonna pull the spark plugs saturday hopefully and they should tell me everything. if its burning oil im pretty sure ill find some oil on the plugs same with if where burning coolant. and then ill just look and the color to check if its running rich and possibly run a compression test for the springs. i wish i could do a cylinder leakage test but i dont have the gauges
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1st- Compression test doesn't test the valve springs.
2nd- Compression test will test a leak in the piston rings
3rd- Condensation will not make your car smoke, that'll burn off once the car is ran a few minutes.
4th- Only way you would be burning coolant is if your headgasket went, look for one or more of the pistons (when you pull the spark plug) being super clean.
5th- KEEP AN EYE ON THE OIL LEVEL.
 
FlyinFINN said:
1st- Compression test doesn't test the valve springs.
2nd- Compression test will test a leak in the piston rings
3rd- Condensation will not make your car smoke, that'll burn off once the car is ran a few minutes.
4th- Only way you would be burning coolant is if your headgasket went, look for one or more of the pistons (when you pull the spark plug) being super clean.
5th- KEEP AN EYE ON THE OIL LEVEL.
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typo on that sorry
 
pretty sure he meant rings lol ...just cuz u drive some crazy alms bmw....doesnt mean you have to be a nazi
 
m4nfred said:
pretty sure he meant rings lol ...just cuz u drive some crazy alms bmw....doesnt mean you have to be a nazi
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I didn't know what he meant. If he meant rings, then why did he then say "I wish I could check cylinder leakage, but I dont have the gauge". Thats a compression test. So you see the drama!
 
FlyinFINN said:
1st- Compression test doesn't test the valve springs.
2nd- Compression test will test a leak in the piston rings
3rd- Condensation will not make your car smoke, that'll burn off once the car is ran a few minutes.
4th- Only way you would be burning coolant is if your headgasket went, look for one or more of the pistons (when you pull the spark plug) being super clean.
5th- KEEP AN EYE ON THE OIL LEVEL.
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yea i know that a compression test will check for leaks but i wanna know how much is leaking. small leaks are generally ok but anything bigger as yo know is a problem. other thing is that the condenstation is formed as the car is running. know another problem that could cause this which was common in volvo im not sure about s13s but sometimes condensation would form in the gas tank if you store them too long without the tank being full. this would cause water to burn and look like droplets falling out of the exhaust.
 
boricuaguy18 said:
yea i know that a compression test will check for leaks but i wanna know how much is leaking. small leaks are generally ok but anything bigger as yo know is a problem. other thing is that the condenstation is formed as the car is running. know another problem that could cause this which was common in volvo im not sure about s13s but sometimes condensation would form in the gas tank if you store them too long without the tank being full. this would cause water to burn and look like droplets falling out of the exhaust.
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I don't know how your going to test compression without knowing the compression of the cylinder. But good luck.
 
FlyinFINN said:
I didn't know what he meant. If he meant rings, then why did he then say "I wish I could check cylinder leakage, but I dont have the gauge". Thats a compression test. So you see the drama!
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i dont know if you know the difference but when you do the compression test your check to see how much compression the engine is running in each cylinder. now in a cylinder leakage test you set the pistons to where they are at i believe tdc or bdc (cant remember and both valves need to be closed) and actually force compressed air in the cylinder. you need a gauge to read the amount of psi in the cylinder. a small leak is considered ok but large leak can vary from bad rings or bad valve seats.
 
boricuaguy18 said:
i dont know if you know the difference but when you do the compression test your check to see how much compression the engine is running in each cylinder. now in a cylinder leakage test you set the pistons to where they are at i believe tdc or bdc (cant remember and both valves need to be closed) and actually force compressed air in the cylinder. you need a gauge to read the amount of psi in the cylinder. a small leak is considered ok but large leak can vary from bad rings or bad valve seats.
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My compression testor checks both (has an air fitting). But i dont know how you will tell without a gauge.
 
FlyinFINN said:
I don't know how your going to test compression without knowing the compression of the cylinder. But good luck.
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well most will put out about 160-180 psi for low compression. but if you dont know if you have low or high compression you would then be looking for numbers that fall into the same range. like say cylinder 1 runs 160 psi and cylinder 2 is running 163 psi. you want the rest of the numbers to fall in such a way that you can draw a perfect straight line across with the line being closest to the highest possible number. i believe that as a general rule of thumb each cylinder shouldnt differ more than five psi from the rest.

FlyinFINN said:
My compression testor checks both (has an air fitting). But i dont know how you will tell without a gauge.
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well good for you. i just have a regular compression tester
 
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^^I know how to do a compression test. :)
Let us know how your oil level looks tomm. When's the last time you changed your oil on the 240sx or have you ever?
 
no i just recently bought it and i checked the oil. didnt smell or look burnt. smelled and looked fairly new. and the oil filter also looks new
 
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