I am in need of some help on this one. My 1962 998cc Cooper has developed an oil leek from the dipstick hole. There seems to be a lot of pressure behind it and a large volume of oil on the floor. What can cause this? anyone experienced this before?
Oil Leak
Started by
STOYS
, May 12 2006 12:08 PM
7 replies to this topic
#2
Tom Sanderson
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Posted 12 May 2006 - 12:09 PM
are the engine breathers blocked??
#3
Dan
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Posted 12 May 2006 - 06:16 PM
Have you ever replaced the oil filler cap with a new one? As Tom says are the breathers blocked? Does this car have a breather valve on the inlet manifold? If so has it been serviced properly? Is your dipstick tube properly fitted and not just completely missing? If all of this is fine then it could be the dipstick tube is worn and needs replacing.
ST fixed similar problems on the works cars by drilling a 1/8" hole in the top side of the dizzy mounting plate and using a throttle spring to hold the dipstick tightly in place. But a standard car in good condition shouldn't need this.
ST fixed similar problems on the works cars by drilling a 1/8" hole in the top side of the dizzy mounting plate and using a throttle spring to hold the dipstick tightly in place. But a standard car in good condition shouldn't need this.
Edited by Dan, 12 May 2006 - 06:20 PM.
#4
Sprocket
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Posted 12 May 2006 - 06:41 PM
Or is it not as a result of worn piston rings and cylinders producing excessive blow by???
#5
paulrockliffe
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Posted 17 July 2006 - 09:26 AM
So the dipstick should be tight? Mine just lifts out and I've got an oil leak that doesn't seem to be dripping, but dropping big puddles at random. I'm about to go and investigate the source, but I wondered if it was coming out via the dipstick hole?
Cheers.
Cheers.
#6
Dave the Rave
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Posted 17 July 2006 - 11:49 AM
Actually thinking about it my dip stick is slack as a yack 2.
I'd also be pretty sure it leaks out of there! Is a new dip stick the answer?
I'd also be pretty sure it leaks out of there! Is a new dip stick the answer?
#7
Grayedout
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Posted 17 July 2006 - 11:56 AM
New disptick is the last resort. Check the breather and everything else that has mentioned above first !
A standard road car should not develop enough crankcase pressure to blow oil out of the dipstick !
A standard road car should not develop enough crankcase pressure to blow oil out of the dipstick !
#8
paulrockliffe
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Posted 17 July 2006 - 09:58 PM
New disptick is the last resort. Check the breather and everything else that has mentioned above first !
A standard road car should not develop enough crankcase pressure to blow oil out of the dipstick !
No, turns out mine doesn't blow oil out of the dipstick! There's a small leak from the sump plug and a big leak from the gear change rod seal, though it hasn't lost a drop today, so not sure what all that's about! Will keep an eye on it and see what happens before I start changing seals.
Cheers.
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