check out the. The oil pump is turned by the crankshaft. https://search.yahoo.com/yhs/search...0o3TZ6CxXHutbnLTa1rPDapMSdqA-9tXQ2Bt7ykGgjA,, https://www.carid.com/2006-bmw-5-se...engine-crankshaft-repair-sleeve-20423633.html, https://www.ebay.com/itm/Timken-KWK...BMW-Porsche-Toyota-Renault-Saab-/182821500217, https://www.ebay.com/itm/Timken-Rep...&sd=182821500217&_trksid=p2047675.c100623.m-1, http://www.bimmerfest.com/forums/showthread.php?t=718512, https://www.youtube.com/watch?v=Btn2E2wnyoU, https://www.youtube.com/watch?v=sU9buiHHdNQ, https://www.youtube.com/watch?v=bKayjFhOXc4, VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Well looking at it from the front it appears normal but upon closer inspection from the other side and below it I noticed a small area of oil. The crankshaft seal is also next to one of the main bearings in the engine, which needs to be constantly lubricated by oil. First, clean the entire … The problem could also stem from the main caps, which could possibly be misaligned in size. Excessive crankcase pressure can be caused by the tappet cover gasket collapsing against the inside of the cover, blocking the breather pipe or by worn compression rings or worn cylinder walls I just recently repaired another northstar engine and now have a slow leak coming from the front crankshaft seal.....I did a complete half case seal along with other goodies....I've done a couple WOT to test the engine out and it runs smooth as silk. Is It Worth Fixing? The above diagram shows … These seals have a polytetrafluoroethylene (PTFE) coating on the lip seal that needs to be dry and seat to a dry surface on the crankshaft. If not tight the cylinder will not fill/exhaust properly which will lead to reduced perfomance and other running related issues.

Strange, however, that no oil or fuel is visible as the crancase pressure would force a little amount out if the seal is not tight? The damn thing is still leaking from the front crankshaft seal! It was all around the front seal and pulley area and the timing cover, down to the oil pan. Driving with an overheated engine may have the same result. Donations https://www.paypal.me/SiRobb/https://www.amazon.co.uk/shop/sirobbAs an Amazon Associate I earn from qualifying purchases. When a turbocharger is installed correctly, it should NOT leak oil, however, there can be cases where oil leaks occur. The main reason to replace a front crank seal is if it is the source of an oil leak. It does look a bit wonky/out of balance. It's not uncommon for the crank surface to get a groove and leak around the seal particularly in higher mileage engines. The majority of the time a repair sleeve is needed to fix the issue, because most balancers are made of a relatively soft metal in comparison to the crank. I didn't have the time or the inclination to do the cover gasket job. The crank seals either end can weep. Beer can idea sounds interesting though, and I assume (kind of obvious, but want to make sure) it is meant to sit on the outside of the seal against the block as oppose to inside the seal against the shaft. That pulley will throw oil all over the place. The crank seal was one and the timing cover gasket which was the worst of the two was the other leak. This page was generated at 1 minute ago. My dad (a certified Chevy mechanic) figured it was the front crankshaft seal. Im assuming this is most likely a cam sensor leak, is there … I didn't have the time or the inclination to do the cover gasket job. There is no liquid fix for a crankshaft oil leak. We opened it up to find a nice wet oil streak directly below the crankshaft seal. The seal at the front is behind the crank pulley, you can see this by removing the wheel, arch liner that side. Does anyone have an idea of what would make it leak other than not being put in right. Been going at this for 3 months now. I rtv sealed the keyway to the balancer. Replaced it, sealed up the oil pump, put it all back together and now it is leaking just as bad or worse as before! But i still dont understand how that would affect the seal. Excessive, or uneven clearance of the seal surface around the spiral grove will also cause excessive leakage, as will excessive crankcase pressure. This is one of the most common major oil leaks on older high mileage diesel engines. It turned out to be the oild pump gasket running down the front of the motor Stop leak products seem enticing as many promise to seal or protect against engine ... ATP Sealer. An undersize crankshaft could result in the same poor fit and a leak. This will be the third time and I don't know if it will even be done right. Does anyone have an idea of what would make it leak other than not being put in right. The most common symptom of a faulty crankshaft seal will be an oil leak. Come join the discussion about Bimmerfest events, production numbers, programming, performance, modifications, classifieds, troubleshooting, maintenance, and more! Excessive wear which enlarges the crankcase bore for any reason may cause the crankshaft oil seal to leak.