engine rocker cover leaking oil from the sides

Engines, Transmissions & Final Drive questions and answers

Moderators: timk, Stu, zombie, Andrew, The American, Lokiel, -alex, miata, StanTheMan, greenMachine, ManiacLachy, Daffy

Sal.kalandos
Driver
Posts: 64
Joined: Thu Nov 21, 2013 8:47 pm
Vehicle: NB8B

engine rocker cover leaking oil from the sides

Postby Sal.kalandos » Sat May 03, 2014 10:06 am

anyone know how I can fix this? and how much it would cost?

im not very good mechanically so I would need to take it to a mechanic.

i've put a pic

Image

Image

User avatar
MrRevhead
Racing Driver
Posts: 715
Joined: Mon Mar 26, 2012 2:40 pm
Vehicle: NA6
Location: NW Sydney

Re: engine rocker cover leaking oil from the sides

Postby MrRevhead » Sat May 03, 2014 10:41 am

Valve/Rocker cover gasket might need replacing.

Not hard to do, here is a guide if you want to attempt it yourself:

http://www.miata.net/garage/valvecover/

Here's another one with larger pictures:

http://tinyurl.com/n5xxadf

You can purchase a new gasket from Mazda, MX5 Mania, MX5 Factory, Ebay etc

If you're not confident in doing it yourself, any mechanic should be able to do it. Alternatively, take it to somewhere like MX5 Factory and get them to supply and fit it.
1991 NA6 BRG Limited Edition #124 (Aus Delivered)
Image

sailaholic
Speed Racer
Posts: 3511
Joined: Thu May 19, 2011 3:38 pm
Vehicle: NA8
Location: Brisbane

Re: engine rocker cover leaking oil from the sides

Postby sailaholic » Sat May 03, 2014 11:46 am

It's about a 5 - 10 minute job. Make sure you get a genuine Mazda gasket. Most aftermarket ones leak from new.


Sent from my iPhone using Tapatalk

User avatar
tescoking
Racing Driver
Posts: 824
Joined: Sat Dec 01, 2012 1:48 am
Vehicle: NB8B
Location: Perth, WA

Re: engine rocker cover leaking oil from the sides

Postby tescoking » Sat May 03, 2014 1:54 pm

make sure you put some red colour sticky stuff in between the gap before you put the cover back on.
My 5
Late 2000 Sunlight Silver NB8B
Image

sailaholic
Speed Racer
Posts: 3511
Joined: Thu May 19, 2011 3:38 pm
Vehicle: NA8
Location: Brisbane

Re: engine rocker cover leaking oil from the sides

Postby sailaholic » Sat May 03, 2014 3:14 pm

Where? The manuals only day to put it in the corners?


Sent from my iPhone using Tapatalk

manga_blue
Forum Guru
Posts: 4897
Joined: Mon Apr 24, 2006 7:27 pm
Vehicle: NA8
Location: Moruya, NSW

Re: engine rocker cover leaking oil from the sides

Postby manga_blue » Sat May 03, 2014 4:39 pm

Use auto RTV silicone sealant only on the points shown.

Image
’95 NA8

project.r.racing
Speed Racer
Posts: 3722
Joined: Sun Jan 18, 2009 10:16 pm
Vehicle: Non MX-5
Location: Glasshouse Mountains, QLD

Re: engine rocker cover leaking oil from the sides

Postby project.r.racing » Sat May 03, 2014 8:10 pm

sailaholic wrote:Where? The manuals only day to put it in the corners?


manga_blue wrote:Use auto RTV silicone sealant only on the points shown.

Image
that is from an old outdated NA6 manual. If you look at any manual from 94 onwards, you'll bee adding more sealent.

Image

Not that the older way doesn't work. I just think mazda having failing cover seals just decided to make you add move for a extra fail safe.

manga_blue
Forum Guru
Posts: 4897
Joined: Mon Apr 24, 2006 7:27 pm
Vehicle: NA8
Location: Moruya, NSW

Re: engine rocker cover leaking oil from the sides

Postby manga_blue » Sat May 03, 2014 8:48 pm

I've never seen Mazda recommend blanket bombing with silicone before. I wish it would make up its mind. This is copied from the Mazda factory NB8B workshop manual.

Image
’95 NA8

manga_blue
Forum Guru
Posts: 4897
Joined: Mon Apr 24, 2006 7:27 pm
Vehicle: NA8
Location: Moruya, NSW

Re: engine rocker cover leaking oil from the sides

Postby manga_blue » Sat May 03, 2014 9:11 pm

Actually this is from the factory NB8A one. I'm wondering where yours came from?

Image
’95 NA8


Return to “MX5 Engines, Transmission & Final Drive”

Who is online

Users browsing this forum: Google [Bot] and 74 guests