 Oil Leak, Covers top side of motor |
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| srohling |
 Oct 16 2010, 03:12 PM
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#1
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Newbie  Group: Members Posts: 32 Joined: 19-July 09 From: sc Member No.: 10,584 Region Association: South East States  |
I have a 74 2.0 that recently recieved a new 2.39L. The new motor has always leaked a little oil from the start....never enough to be a bother. I recently took the car out for a 180 mile trip....90 miles each way. When I got the car home, I had a large oil leak under the car and the top of the motor looked like someone sprayed oil all over. I looked at the crankcase ventalation system and that doesn't appear to be leaking. Before I drop the motor to take a look, does anyone have any other ideas of where the leak might be? It only appears to spray the motor when I am on a long drive...could it be heat related, motor expansion???
Any help is appreciated. Scott |
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| Spoke |
Oct 16 2010, 03:22 PM
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#2
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Jerry Group: Members Posts: 6,979 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None 
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Where on top of the motor?
For the most part, leaking fluids fall down so something higher up is leaking. Could be the oil filler assembly. Got a pic? How much oil has been lost in the engine? |
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| srohling |
Oct 16 2010, 03:39 PM
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#3
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Newbie Group: Members Posts: 32 Joined: 19-July 09 From: sc Member No.: 10,584 Region Association: South East States |
It looks like a misty spray of oil as the entire top of the motor is coated. It has sprayed all the way to the air cleaners on my dual 44s.
I'm on then road right now, so I can't get pictures....sorry. Scott |
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| 904svo |
Oct 16 2010, 04:18 PM
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#4
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904SVO Group: Members Posts: 1,118 Joined: 17-November 05 From: Woodstock,Georgia Member No.: 5,146 |
Check the oil pressure sender by the distributor it might be loose.
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| simonr |
Oct 16 2010, 04:35 PM
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#5
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Member Group: Members Posts: 65 Joined: 11-July 10 From: Indianapolis Indiana Member No.: 11,925 Region Association: None |
I second the oil pressure sending unit. Also check the distributor . Sometimes the rubber seal can get damaged upon install or is old and brittle.
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| john rogers |
Oct 16 2010, 07:38 PM
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#6
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Senior Member Group: Members Posts: 1,525 Joined: 4-March 03 From: Chula Vista CA Member No.: 391 |
With a new hot rodded engine, sounds like the crankcase needs to be vented and I would recommend checking if there is a PCV valve or lines of any sort running from the oil filler box to a puke tank or aluminum vent tank mounted somewhere such as the firewall. If none, then you'll need to add one as the pressure in the case is lifting the filter box part of the filler and the oil is spraying. There should be a cork gasket there so it is probably toast now so you'll need a new one and I don't think they are available so they can be made easily. Good luck
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