Oil in the Intake Manifold
03-30-2012, 03:08 PM
#16
Sharkaholic
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Mark at 928Intl sells these simple plates that work:
http://www.mailordercentral.com/928i...928 107 707 05
I'm installing one right now on a '86.5, the other measures I take is to vent everything away from the intake to a external breather like the Provent that DR sells at 928 Specialists.
Injectors can be cleaned in place by running some SeaFoam through the fuel system, usually though most guys just upgrade the injectors to Ford Performance 4-holers (24lb).
http://www.mailordercentral.com/928i...928 107 707 05
I'm installing one right now on a '86.5, the other measures I take is to vent everything away from the intake to a external breather like the Provent that DR sells at 928 Specialists.
Injectors can be cleaned in place by running some SeaFoam through the fuel system, usually though most guys just upgrade the injectors to Ford Performance 4-holers (24lb).
03-30-2012, 03:29 PM
#17
Pro
Really? That lifts my worries a bit. My mechanic comes highly recommended and has worked on many 928s, so when he said it was engine problems my heart sank (and forgive me but for a very very small moment I almost almost thought about being a 911 convert).
The MAF does need rebuilding, I was able to take a look at it and it was in need of service. Vacuum leaks and fuel lines were also bad so he's replacing them all. Spark plugs are 5 years old but need to go. I'm getting a set of Beru wires and already ordered caps and rotors off of Roger. I considered new ignition coils too but was reading that they don't normally wear as bad as the other electrical stuff.
The MAF does need rebuilding, I was able to take a look at it and it was in need of service. Vacuum leaks and fuel lines were also bad so he's replacing them all. Spark plugs are 5 years old but need to go. I'm getting a set of Beru wires and already ordered caps and rotors off of Roger. I considered new ignition coils too but was reading that they don't normally wear as bad as the other electrical stuff.
and he thinks that the oil on the manifold is a PROBLEM .
I dont want to talk bad about enybody but, maybe you should look for another mechanic
03-30-2012, 11:49 PM
#18
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Pic from the install of Marks oil control plate. I use Drei Bond (also available from 928 Intl) for sealing and used the stock '85-'86 gasket plate on top of Marks. The water bridge has to be either off or lossened and tipped forward to get the oil control plate into place.
Here is some initial install pics of DRs' Sharkvent. I'm missing the stock breather hose from the oil fill neck vent to the forward cam vent, instructions call for cutting the stock hose and connecting it into the four way fitting. My stock hoses are all broken from age and heat related brittleness. Other than that this kit installs really nice.
Here is some initial install pics of DRs' Sharkvent. I'm missing the stock breather hose from the oil fill neck vent to the forward cam vent, instructions call for cutting the stock hose and connecting it into the four way fitting. My stock hoses are all broken from age and heat related brittleness. Other than that this kit installs really nice.
03-31-2012, 04:06 AM
#19
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+ Edit:
Thanks for the pics Shane!
Last edited by Avar928; 03-31-2012 at 04:07 AM. Reason: + Remove
03-31-2012, 04:11 AM
#20
Three Wheelin'
I agree. I also think that perhaps his mechanic did not go into enough detail about the "engine problem" to begin with, considering that this guy thought his engine needed to be rebuilt from oil in the intake. Excessive oil in the intake should point out to any mechanic that there is a PCV related problem, start with the PCV system first as it is the easiest to test, before they say that the engine is shot!
03-31-2012, 04:30 AM
#21
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I agree. I also think that perhaps his mechanic did not go into enough detail about the "engine problem" to begin with, considering that this guy thought his engine needed to be rebuilt from oil in the intake. Excessive oil in the intake should point out to any mechanic that there is a PCV related problem, start with the PCV system first as it is the easiest to test, before they say that the engine is shot!
He knows his 928 stuff but I think it's just he's more of a 911 guy than anything.
03-31-2012, 11:40 AM
#22
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Oil in the intake is a common problem in these cars and if your vacuum system is not functioning as it should or you have leaky engine it can be worse.
In most cars if all of the seals are intact and the PCV system is working the intake is dry. Boosted cars will have a check valve or something and an oil seperator system,.. The 928 seems to be lacking an oil seperation system and its PCV system is marginally inadequate if the motor has any vacuum or oil leaks.
In most cars if all of the seals are intact and the PCV system is working the intake is dry. Boosted cars will have a check valve or something and an oil seperator system,.. The 928 seems to be lacking an oil seperation system and its PCV system is marginally inadequate if the motor has any vacuum or oil leaks.
03-31-2012, 01:13 PM
#23
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Oil in the intake is a common problem in these cars and if your vacuum system is not functioning as it should or you have leaky engine it can be worse.
In most cars if all of the seals are intact and the PCV system is working the intake is dry. Boosted cars will have a check valve or something and an oil seperator system,.. The 928 seems to be lacking an oil seperation system and its PCV system is marginally inadequate if the motor has any vacuum or oil leaks.
In most cars if all of the seals are intact and the PCV system is working the intake is dry. Boosted cars will have a check valve or something and an oil seperator system,.. The 928 seems to be lacking an oil seperation system and its PCV system is marginally inadequate if the motor has any vacuum or oil leaks.
I was afraid if I even breathed on it, something else would crack and leak. But she'll be fixed up and now I know better.
I saw on 928motorsports an oil control baffle. I think I'll buy it and ship it to him to install since everything is off. I also read an article that combines this with the 928intl control and some wire meshing.
928 owners are so ingenious O.O
http://www.928motorsports.com/parts/...trolbaffle.php
03-31-2012, 01:46 PM
#24
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The 928 motorsports baffle is designed after the stock plate that comes in the '85-'86, just reuse that with the 928 Intl oil control plate. Besides Carls baffle will not work with Marks.
03-31-2012, 01:49 PM
#25
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She was leaking like a faucet when he showed me under the hood once the plenums were off
I was afraid if I even breathed on it, something else would crack and leak. But she'll be fixed up and now I know better.
I saw on 928motorsports an oil control baffle. I think I'll buy it and ship it to him to install since everything is off. I also read an article that combines this with the 928intl control and some wire meshing.
928 owners are so ingenious O.O
http://www.928motorsports.com/parts/...trolbaffle.php
I was afraid if I even breathed on it, something else would crack and leak. But she'll be fixed up and now I know better.
I saw on 928motorsports an oil control baffle. I think I'll buy it and ship it to him to install since everything is off. I also read an article that combines this with the 928intl control and some wire meshing.
928 owners are so ingenious O.O
http://www.928motorsports.com/parts/...trolbaffle.php
03-31-2012, 02:12 PM
#26
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03-31-2012, 03:14 PM
#27
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Kuhn or 928intl instead. Got it. Thanks!
I didn't ask nor did he mention it Porken. He's working the intake first, it's taking him some time since everything is seized under there.
I didn't ask nor did he mention it Porken. He's working the intake first, it's taking him some time since everything is seized under there.
03-31-2012, 04:53 PM
#28
04-01-2012, 02:09 AM
#29
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Normal but still not a good thing. Install one of these and you won't have that issue any longer. I had a major oil expulsion issue with a boosted engine. I tried the stock style louvered plate. It didn't make a difference. I installed this thing and my liquid oil ejection went away.
