 Does the crank case push pressure or pull a vaccume?, I did something stupid.... |
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| VaccaRabite |
 Aug 8 2021, 06:38 PM
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En Garde!  Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region  |
So some of you may remember my thread a couple weeks back that the oil filler cap disappeared during a spirited drive a while back. I have 2 other caps, but they are the wrong size (grrrr).
I drove a couple times and not much oil came out, but a little did. So I figured some aluminum foil where the filler cap should be would keep the small amount of oil the comes out from happening. So after applying some heavy duty foil, I fired her up and went for a drive for about an hour. Came back and the FOIL WAS NOW GONE! There was foil around the lip of the filler, but the foil the covered the opening has either been blown off, or sucked into the crank case. So... yeahhhhhhhhhh. (IMG:style_emoticons/default/icon8.gif) (IMG:style_emoticons/default/stromberg.gif) (IMG:style_emoticons/default/slap.gif) Engine ran great. No changes to oil pressure or oil temps. Clearly I need to drain the oil out and also pull the tuna can off and look around. So. How boned am I? Zach |
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| wonkipop |
Aug 8 2021, 06:52 PM
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Advanced Member Group: Members Posts: 4,403 Joined: 6-May 20 From: north antarctica Member No.: 24,231 Region Association: NineFourteenerVille 
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(IMG:style_emoticons/default/agree.gif)
most likely. there is vacuum but its at the valve, hose to air cleaner inlet plenum to help draw the vapours into the induction side of engine. better get yourself a new filler cap mate. |
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| VaccaRabite |
Aug 8 2021, 08:01 PM
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En Garde! Group: Admin Posts: 13,465 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
QUOTE(wonkipop @ Aug 8 2021, 08:52 PM)  (IMG:style_emoticons/default/agree.gif) most likely. there is vacuum but its at the valve, hose to air cleaner inlet plenum to help draw the vapours into the induction side of engine. better get yourself a new filler cap mate. I've got 3, but they are all the wrong size. I think (as in I saw it recently) I have a whole other filler neck I can put on that uses the size cap that I have a surplus of. I just need to find it and swap it over. I'm still going to drain the oil and pull the tuna can just to inspect everything. But I tend to agree its probably sucked into the fan and blown over under the tins somewhere... Zach |
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Posts in this topic
VaccaRabite Does the crank case push pressure or pull a vaccume? Aug 8 2021, 06:38 PM
BeatNavy Zach, pretty sure intake is going to have vacuum (... Aug 8 2021, 06:44 PM Spoke I would think the crankcase would be under pressur... Aug 8 2021, 06:54 PM SirAndy Does the crank case push pressure or pull a vaccum... Aug 8 2021, 07:00 PM
SirAndy
Does the crank case push pressure or pull a vaccu... Aug 8 2021, 08:55 PM wonkipop
[quote name='SirAndy' post='2936489' date='Aug 8 ... Aug 9 2021, 04:46 AM Krieger Cut your oil filter open and give a look. Aug 8 2021, 11:26 PM |
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