Puzzling oil leak

Engines, Transmissions & Final Drive questions and answers

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and1
Fast Driver
Posts: 368
Joined: Sat Sep 18, 2010 9:43 pm
Vehicle: NB SE
Location: Perth, WA

Puzzling oil leak

Postby and1 » Tue Sep 30, 2014 12:06 am

Hey guys thought I'd ask the gurus on here.

I've been dealing with this oil leak weeks on end.

Freshly built (only done 300km) engine (BP4W) in my 05 SE.

Leak is from front of engine.

Bolt in oil pump and rtv'd. Cam seals are dry. Front main was dry and today I rtv'd the whole valve cover gasket thinking the leak was coming from that. Just came back from a test drive and still leaking...

Pressures are mid 60s PSI with a shim in the relief valve.

It's doing my head in.

The leak pools right under the front pulley. There's oil being flung from running down the pulley.

Leak is not severe but on a freshly built engine I'd rather not have a mess in the bay.

Thoughts?

If there are any WA guys that wanna have a look and help me diagnose that would be great!
2005 Velocity Red MX-5 SE
Garage thread
http://mx5cartalk.com/forum/viewtopic.php?f=57&t=44487

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JBT
Speed Racer
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Joined: Tue Jun 03, 2003 11:00 am
Vehicle: NC
Location: Brisbane

Re: Puzzling oil leak

Postby JBT » Tue Sep 30, 2014 6:18 am

Cam seal or crank seal leaking due faulty seal or incorrect installation.
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gslender
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Joined: Sat Feb 19, 2011 10:49 pm
Vehicle: NA6
Location: Brisbane, QLD

Re: Puzzling oil leak

Postby gslender » Tue Sep 30, 2014 6:42 am

Yep, pull the front cover off, remove crank pulley and inspect. I'd think the front main seal isn't installed correctly or damaged, but pull things off until you find it. It will get worse and become a problem
MX5 91 NA6 LE completely stock and loving it!
MX5 92 NA8/ITBs Silver "aka Track Beeotch"

project.r.racing
Speed Racer
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Location: Glasshouse Mountains, QLD

Re: Puzzling oil leak

Postby project.r.racing » Tue Sep 30, 2014 9:02 am

or the sump moon seals. they are a biatich to get right.

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gslender
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Joined: Sat Feb 19, 2011 10:49 pm
Vehicle: NA6
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Re: Puzzling oil leak

Postby gslender » Tue Sep 30, 2014 9:11 am

project.r.racing wrote:or the sump moon seals. they are a biatich to get right.


True. Worth confirming if the sump was RTVd correctly too.


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MX5 91 NA6 LE completely stock and loving it!
MX5 92 NA8/ITBs Silver "aka Track Beeotch"


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