Cylinder 3 misses and has carbon biuld up on plug also looks to have oil on the plug, smell like oil is burning , smokes alot out of tail pipe,oil consumtion is a qt, per 300 miles and it looks like oil is blowing into the air intake boot froom the air filter, seems to run strong at higher speeds, But does not idle well.

Water in the gasoline, or a leaking head gasket. A leaking gasket may not show water foaming or discoloration in the oil, but level in the radiator will go down over time.

White smoke from tail pipe normally means you are burning coolant. Could be a blown head gasket. With car running, check for sweet smell from tail pipe, if you do, it's coolant burning. Also see if you have coolant running out of tail pipe. You can also remove spark plugs and see if they look clean or like new. Another indicator that coolant is making it's way into engine cylinders. Could only be going into one of all.

what smokes. we are blind here.
you must stay.

1: end of tail pipe smokes
2: or, with hood up the exhaust manifold smokes due to oil we dropped there. (common on much service)
and what color is it.?
from where.?
tail pipe can do 3 colors
white goes away fast ,called steam.
white stays way too long called burned oil smoke,
and black (unburned fuel) and smells like gas..

And let me guess, no smoke from tail pipe. Problem is internal. Nissan had a whole batch of these motors with this problem. Unfortunately, engine replacement is required. Don't get a junkyard motor, get a quality rebuilt.

no year, ?

try a new spark plug e and then if wires to spark plug , replace that too. and cap and rotor if it has that....?????



then when spark is good, check compression with any $20 gauge.

no year, i give up.

1976 accord? surely ive no clue.



smoke has 3 colors, (my rules not ASE)

1 black fuel (flooding etc) can seem gray but is black .

2: white and lingers., oil burning , bad. news.

3: white and fades fast, is STEAM, like moms tea pot, look next time..

smell white smoke, smells sweet, its toxic antifreeze.

smells like oil dripped on an hot exhaust? that is the smell of oil burning



smoke where, under front of car, or at the end of the tail pipe. ?????????????



how you like my smoke rules, even mom can figure it out.

didn t say what color smoke --if you start up on cold or damp days and get a small white or steam looking discharge from tail pipe than your burning out/off the moisture that has accumulated in the exhaust system when all moisture gone smoke gone ---white alot- billowy-and doesnt stop burning coolant -water/anti-freeze-leak in coolant or the famous blown head gasket ----black smoke and not a diesel carbon build up and or need tuneup---blue smoke burning oil something in engine is damaged and allowing oil into cylinder and is being burnt

is it leaking, or burning in the combustion chamber? Comming out the tail pipe? Blue smoke is oil, white smoke is water, black smoke is carbon. Smell your exaust; smell like "prestone"? Does the engine over heat? My guess would be a bad head gasket. Is the oil a light brown color?

check oil dip stick for water/antifreeze and radiator for oil in antifreeze but usually alot of white smoke-steam from tailpipe usually indicates head gasket blue smoke means oil black smoke carbon

If its blue smoke then your valve stem seals are worn and that is allowing oil to enter the cylinders and burning with the gas.

Blue Smoke: Blue smoke is caused by engine oil entering the cylinder area and being burned along with the fuel air mixture. As with the white smoke, just a small drop of oil leaking into the cylinder can produce blue smoke out the tailpipe. Blue smoke is more likely in older or higher mileage vehicles than newer cars with fewer miles.
How did the engine oil get inside the cylinder in the first place? The car has many seals, gaskets, and O-rings that are designed to keep the engine oil from entering the cylinder, and one of them has failed. If too much oil leaks into the cylinder and fouls the spark plug, it will cause a misfire (engine miss) in that cylinder, and the spark plug will have to be replaced or cleaned of the oil. Using thicker weight engine oil or an oil additive designed to reduce oil leaks might help reduce the amount of oil leaking into the cylinder. I that doesn't work then i would get with a mechanic and have it leak tested for possible piston ring replacement.