Engine oil is leaking i just fixed crank shaft seal and gaskits but still leaking any solution??

You don't give make or model. Here goes , The engine has a rear maim seal behind the fly wheel if it leaks the leak will be from the clutch housing. It has a front seal behind the crank shaft timing cover.it can leak from there . it can leak from the oil filter and oil pressure switch . Can also leak from the top timing cover gasket and cam shaft seals.

oil leaks from underneath can come from front crank shaft seal --rear crank shaft seal --oil filter--sump gasket---power steering ---leaking rocker cover gaskets ---leaking oil pressure switch.--transmission seals. I suggest that you have the engine professionally cleaned and then put it on a hoist while running to see where the oil is from

Check the sump gasket at the rear of the sump tension sump bolts. Check that the rocker cover gasket is not leaking down the back of the engine and giving the appearance of a sump leak. Rear crank seal would be another point of leak and front input shaft (clutch shaft) seal leaking. Check the engine oil level and correct if necessary and check gear box oil level and correct if necessary. If you have an auto the oil will be pinkish and indicates a torque converter to gear box seal leaking.. Either of the shaft seals will require the box removal for repair.

Dear Sir,
Here is the oil leaking Problem Identifying Technique

Engine oil leaks from the valve cover gasket are common.

The intake manifold plenum gasket may leak and cause increased oil consumption/burning and a spark knock during acceleration; the gasket should be replaced.

External oil leaks from valve cover gaskets, intake gaskets (front or rear), and the rear crankshaft (rear main) seal area are common. The rear main seal is an unlikely source. Normally, the bearing cap mating surfaces (as well as the sealing surface between the oil pan and bearing cap) are the source for the leaks.

Engine oil leaks at the distributor can be misdiagnosed as leaks from theintake manifold seal, oil pan gasket, or rear crankshaft (rear main) seal. A revised distributor is available if oil is found inside the distributor.

If the oil filter casing shows signs of distortion from excessive oil pressure, theoil pump should be replaced.

Often misdiagnosed as a leaking oil filter gasket, the oil filter adapter can seep from between the adapter and engine block.

Carbon buildup on the top of the piston is common. As the buildup increases with mileage and over time, symptoms may vary from light ticking, to ticking/hammering, to hammering/knocking noises. Fuel injector cleaner often solves the problem.

I think it helps to analyse u r Problem

OIL LEAK COULD BE COMING FROM OIL FILTER SEAL. OIL LEAK FROM THE REAR OF ENGINE COULD BE REAR MAIN OIL SEAL.LEAK IN THE FRONT OF THE ENGINE COULD BE FRONT CRANKSHAFT TIMING COVER SEAL LEAKING OIL.

This sounds like the crank seal, the engine doesnt have to be removed, in order to get to seal is like replacing the ttiming belt, and once in the timing belt i would replace the crank and cam seals, also do the timing belt, and maybe the waterpump, you will need to remove the crank pulley and then the timing covers then align timing marks for timing belt before ou remove it, with timing belt off the crank pulley then slides off the crankshaft and the seal is behind it, the cam shaft gear unbolts and the seal is behind the gear, once the gears are off then you will be able to remove the seals from the engine,heres a few diagrams to help. good luck and i hope this is helpful,

could be your gearbox seals.Check if the front one is gearbox oil or engine oil.If it is engine oil then could be your rocker cover seals..oil from the top travelling down,sump gaskits or crank shaft seals.The direction of travels pushes oil towards the rear and sometimes we think that the leak is on the rear somewhere whereas it could be in the front.

you oil pan bolts of the bottom of the oil resivour the gaskit fits in between the surfaces where the pan meets it creating a seal witch in your case needs to be replaced this procedure replaces that gaskit to create a new seal

By the "Front" I am assuming that you mean the crankshaft end of the engine.
If your engine is equipped with a balance shaft, there is a good possibility that the balance shaft seal has popped out. There is a "balance shaft seal retainer kit" available at your local dealer to fix this and prevent it from happening again. If this is not the case, it could be the front crank and/or oil pump seals. I have even seen cracked oil pump housings on these units.

I have toyota corona 3s engine it smokes black and fuel consuption is high we have changed the engine oil and cylinderhead gassecate but still black smoke is comming what should i do