If a vehicle is smoking then it is obviously burning oil, loud noises from bottom of engine usually indicate main bearing failure, but that wouldn't usually make smoke are you sure it is from bottom of engine. Sounds more likely to me that you have either valve or piston problems, a valve seal gone would result in smoke as oil leaking into Cylinder chamber would burn producing smoke. Piston ring failure would also produce smoke and most likely a significant loss of power with possible noises resulting from broken pieces of ring in the cylinder impacting on head, this may have also unseated a valve causing the smoke. To check ring or valve failure you need to do a compression test, to check for bearing failure I am afraid it will require inspection either by removing sump pan ( oil pan) and removing bearing covers to check for damage.Whatever the cause it sounds as if it may be quite expensive and age and condition of vehicle should be taken into account, after all with the cheap cars on ebay it may be more cost effective to cut your losses and replace the vehicle.
If a vehicle is smoking then it is obviously burning oil, loud noises from bottom of engine usually indicate main bearing failure, but that wouldn't usually make smoke are you sure it is from bottom of engine. Sounds more likely to me that you have either valve or piston problems, a valve seal gone would result in smoke as oil leaking into Cylinder chamber would burn producing smoke. Piston ring failure would also produce smoke and most likely a significant loss of power with possible noises resulting from broken pieces of ring in the cylinder impacting on head, this may have also unseated a valve causing the smoke. To check ring or valve failure you need to do a compression test, to check for bearing failure I am afraid it will require inspection either by removing sump pan ( oil pan) and removing bearing covers to check for damage.Whatever the cause it sounds as if it may be quite expensive and age and condition of vehicle should be taken into account, after all with the cheap cars on ebay it may be more cost effective to cut your losses and replace the vehicle.
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SOURCE: Loud engine knocking on 2001 Ford Focus
Sounds to me like a very common problem has occured to your neighbor. If this is a SOHC engine, one of the valve seats in the number 4 cylinder has fallen out. I'm sure it has damaged the head and the piston. Stop trying to run it or you might blow a hole in the cylinder wall or break a rod or both.
SOURCE: 1997 Explorer - 4.0 SOHC v6 engine knocking noise
yes I would due engine. heck for $2,200 dollars I could do the job parts labor and all
SOURCE: Our 2001 ford focus when it idles it surges
Check the pcv hose for leaks at the intake manifold. Common problem.
SOURCE: rough idle 2000 Ford Focus ,
This car is very hard to work on. Suggest to check the tune up and all vaccuum hoses are good.
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