oil pan gasket leakage, crank shaft seals, camsahft issue

[mohsen]

i have lanos 1.5 - SOHC
i want to change camshaft oli seal and dont know the wrench size used in holding camshaft in place to remove the camshaft gear bolt

thanx

[mohsen]

i have lanos 1.5 sohc - 186000 km
and i found a little bit oil pan gasket leakage beside the belts area
and what iam asking is:
1- neglect it
2- retighten the oil pan retaining bolts
3- change the gasket

thanx

[mohsen]

i have lanos 1.5 sohc - 186000 km
how can i chek if there is any oil leakage at the two crank shaft oil seals
the first seal is behind the flywheel and i think the second it is behinde the crank shaft gear

thanx

[gse_turbo]

as long as you keep checking the oil level at least once a week (or more) than its really just a nuisance. never retighten the pan bolts. ideally you will want to change it. there is no major rush if it's only dripping. plan on doing it with the group of repairs and/or your next oil change.

cheers, welcome to the forum
Garrett

[gse_turbo]

i have lanos 1.5 - SOHC
i want to change camshaft oli seal and dont know the wrench size used in holding camshaft in place to remove the camshaft gear bolt

thanx

you can use a large crescent wrench.

[gse_turbo]

i have lanos 1.5 sohc - 186000 km
how can i chek if there is any oil leakage at the two crank shaft oil seals
the first seal is behind the flywheel and i think the second it is behinde the crank shaft gear

thanx

you will likely see oil build up between trans and engine where they bolt together and it would likely be dripping from the steel access cover beside the oilpan (bolted to the gearbox)

the front seal will be hard to tell if its the seal or the oils pan. you will need to clean the area really well, make sure you have adequate oil, drive for a few miles and then check it again.

[Trey05Woo]

The cam gear bolt is a 17mm wrench or socket. A 1/2 ratchet and 17mm 1/2 socket would work great.

The oil pan uses silicone not a gasket so repairing that leak would require removing the oil pan, and resealing it. This is actually a job performed in an hr or so (considering the lenghty part is clean off the old silicone) and is fairly easy to perform, requires only really dropping or removing the down pipe depending on your level of comfort.

I second do not attempt to tighten the oil pan bolts they will strip as they only have a 1/4 inch length of thread which runs into the block.

[Trey05Woo]

btw the steel washer of the drain plug is also a common leak area. You can purchas them from daewoo direct. think they cost like a dollar and change USD.

[mohsen]

i have lanos 1.5 sohc - 186000 km
how can i chek if there is any oil leakage at the two crank shaft oil seals
the first seal is behind the flywheel and i think the second it is behinde the crank shaft gear

thanx

you will likely see oil build up between trans and engine where they bolt together and it would likely be dripping from the steel access cover beside the oilpan (bolted to the gearbox)

the front seal will be hard to tell if its the seal or the oils pan. you will need to clean the area really well, make sure you have adequate oil, drive for a few miles and then check it again.

thank you very much for joining the 3 topics and answers
but if u please what is the reason of all these leakage and how can i avoid any leakage in the future

[mohsen]

The cam gear bolt is a 17mm wrench or socket. A 1/2 ratchet and 17mm 1/2 socket would work great.

The oil pan uses silicone not a gasket so repairing that leak would require removing the oil pan, and resealing it. This is actually a job performed in an hr or so (considering the lenghty part is clean off the old silicone) and is fairly easy to perform, requires only really dropping or removing the down pipe depending on your level of comfort.

I second do not attempt to tighten the oil pan bolts they will strip as they only have a 1/4 inch length of thread which runs into the block.

thank u very much

[gse_turbo]

thank you very much for joining the 3 topics and answers
but if u please what is the reason of all these leakage and how can i avoid any leakage in the future

really it's just a matter of maintenance, leaks will almost always pop up after so many years. I suggest keeping on top of your oil changes, that is a big help and when you do these gaskets and seals take your time and you will get a better result.

[Nemasys]

Speaking of crank seals, i had to change both mine on my 2.0 when it came from the scrapyard.

The one of the transmission side stopped leaking as soon as i changed it, the one on the belts side leaked for a few months after changing it, it just recently stopped leaking, i dont know if it wasnt sitting properly or something, i wasnt the one who did the job, hopefully its stopped leaking for good.

Just waiting for better weather to clean the bay from all that oil

[Trey05Woo]

Another common leak area is the oil cap which will leak oil and run down the side of the valve cover. I remember having cars come in with a new valve cover gasket, but still leaking oil (which eventually burns on the side of the exhaust manifold and smells up the engine bay) and telling customers the culprit was originally the cap iself. The rubber o ring costs like 6 bucks from daewoous.com I used to stock a bunch.

To prevent the oil pan leak, I used to seal it up with toyota brand silicone. That silicone last well into 100k miles, and is extremely difficult to remove. The daewoo one is just poor quality. As far as the cam seals go, they just start leaking at 50k miles or so. I usually always replace them with a belt job. The oil drain plug is just a crappy design, teflon on the threads helps, but eventually you will get the drops from there...

[Puddle31]

thanks for that Trey. When I did my valve cover gasket on the 1.6 (plugs were full of oil around the wires), I noticed the old gasket was extremely brittle. the one i replaced it with was soft and pliable. did the original gasket start the same way? no wonder it leaked. are those oil drain plug washers standard? how about the oil filler cap o ring? I think my o ring is still leaking. I have about 87K on my Lanos. I've had the timing belt/waterpump tensioner done once so far.

[Trey05Woo]

Yeah when the gasket is new its flexible rubber, with age it cooks and becomes brittle causing it to break. The valve cover gasket usually lasts about 20 or 30k really. The grommets that go on the bolts are usually not included with a new gasket (not even oem). If you want to stop the leaks get the grommets for the bolts (11 in total) and the oil cap.

This will help seal the valve cover for a good 20k or so.

The composite valve cover is much better design and seals better than the aluminum one. If your anal about leaks like I am, you can just swap to the black valve cover.