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Old 08-15-2019, 01:28 PM   #1
SkidrowE46
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2004 325ci Engine smoke

I recently changed my valve cover gasket as it was leaking but mainly as smoke was coming out from the back of the engine block, but its is still coming out after the replacement, anyone have a similar issue with this or any ideas?
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Old 08-15-2019, 02:32 PM   #2
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did you clean the residual oil off?
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Old 08-15-2019, 03:46 PM   #3
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Quote:
Originally Posted by SkidrowE46 View Post
I recently changed my valve cover gasket as it was leaking but mainly as smoke was coming out from the back of the engine block, but its is still coming out after the replacement, anyone have a similar issue with this or any ideas?
Cheers
Most likely thereís one or more small cracks in the VC. Pretty common with these old plastic parts. I always try to remind people to carefully look for cracks when they have the VC off. Maybe do a smoke test when itís cold to find leaks?
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Old Yesterday, 03:04 PM   #4
SkidrowE46
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,,Thanks for the reply, i spent some time cleaning residues away but could only get so far, car was run for about two hours teo days sfter replacement gasket and it was smoking after that, hopefully it is just that so will keep an eye on it,
Cheers
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Old Yesterday, 03:19 PM   #5
SkidrowE46
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No visible cracks seen on the top, but smoke appears to be coming from the back of the engine, the width of the smoke is wider than the VC, ill jack it up over weekend to see whats going on
Thanks
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Old Yesterday, 03:44 PM   #6
Solidjake
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It might be possible you pinched the gasket in the back and oil is still seeping through. Get a mirror and re-inspect the area.
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Old Yesterday, 07:00 PM   #7
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Exact same thing happened to me. I used a Reinz gasket set sold by O'Reilly. What I found out later was that I had forgot to install the orings on the lower cover bolts. But wait a minute you say, doesn't that mean you had orings left over from the kit? Nope! The kit was 5 orings short (...and it was a completely sealed kit as delivered from the factory). I bought another oring set and installed the 5 on the lower row of bolts and it completely cured the leak. So, the question is "Are you sure you have orings on all the cover bolts?" The orings are required to provide proper sealing pressure across the cover because the bolts will bottom out on their studs and apply no sealing pressure to the cover without them.
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