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Old 02-16-2012, 10:48 PM   #1
jvidamins
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Intake manifold off - what else should I do?

Just took my intake manifold off to get to my heater inlet pipe which was leaking where it connects to the engine block. I'm making a list of things I should take care of while I have the intake off. Here's my list so far:

All coolant/heater hoses (6 in all)
Hoses 1, 3 and 5 here: http://realoem.com/bmw/showparts.do?...00&hg=11&fg=35
And hoses 1, 3 and 4 here: http://realoem.com/bmw/showparts.do?...90&hg=64&fg=18

For the upper and lower radiator hoses, I was going to go with Gates as RockAuto sells the quick connect versions for $10.31 and $13.90, respectively. From what I've read, Gates makes great hoses. Any thoughts here?

Does anyone think I should replace the hard plastic coolant pipes 8 and 6 in the first link? I was just going to replace the o-rings in both and call it a day since they're about $90 for the both of them.

Continuing my list...
Throttle body gasket 11611716174
Intake Manifold gaskets 11611436631
DISA Valve O-ring 11617504543
Lower Intake Boot 13541435627 (tore it trying to remove)
Crankcase Ventilation Hose 11157532629 (snapped in half while removing intake)
Vacuum Lines - inspecting and replacing whatever needs it
Lower hose coolant temp sensor O-ring 13621743299
Heater Inlet Pipe O-rings 11531435808

That's my list so far. Can anyone think of anything else I'll HAVE to replace? I was wondering if I had to replace the Fuel Injector O-rings, or I can just reuse the ones that are on the injectors (I did remove them all from the rail and intake). Or what about things that would be a good idea to replace, or at least look at, while my intake is off??? That's why I'm replacing all my smaller heater hoses.

Also, I have some oil coming down the front of my VANOS (see picture). What do you think is causing that? The VANOS hose? The VANOS to head gasket gasket?



Lastly, I also have lots of oil sort of below my oil filter housing, to the right of my water pump. It seems to be collecting on top of my engine block way down there. I have oil ALL OVER the bottom of my engine and tranny, and I'm trying to figure out where it's coming from. Could be my oil pan gasket, but could it be my oil filter housing gasket? (See picture)



As you can tell, I'm trying to whip my Bimmer into shape. Any suggestions would be welcomed.
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Old 02-16-2012, 10:55 PM   #2
jasonbimmer
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VCG and OFHG.
if I get a dime every time I type these two words.
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Old 02-16-2012, 11:34 PM   #3
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Old 02-17-2012, 12:02 AM   #4
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Quote:
Originally Posted by jasonbimmer View Post
VCG and OFHG.
if I get a dime every time I type these two words.
Put on a brand new VCG last summer when I redid my VANOS seals. What else could be causing the oil beneath the VANOS?


Quote:
Originally Posted by paraklas View Post
Starter rebuilt
Oooo... I was looking more for cheaper fixes - hoses, o-rings, gaskets, belts, etc. I'm all for preventative maintenance, but that seems like it might be pretty costly. Think I'll just wait until it goes out, as it's not terribly difficult to take off the intake manifold, especially now that I've done it. Are they prone to fail often?
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Old 02-17-2012, 12:32 AM   #5
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Also, when I did my VANOS seals and VCG, I put on a new VANOS to Head gasket, all new valve cover bolt grommets, and both VANOS oil hose washers. I also used RTV sealant on VANOS "half-moons", etc. Where does it look like it's coming from?
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Old 02-17-2012, 05:37 AM   #6
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I'd do the vac line from the sap, whether it looks good or not. This is a good time for it. And while futzing with the sap, if you notice oil behind the valve like on mine, you might replace the gasket behind it too. I've had mine sitting for 2 years waiting to go in!

The 6 o-rings for that intake air runner.

The IAT o-ring

Didn't see lower intake boot on your list.

I would replace the hard pipes. I didn't when I replaced my 'ancillary' hoses...though I didn't get the one coming out back from the engine. That's off one of the hard pipes, and I couldn't get it at the time I did the other three. Would appreciate seeing pics. of our engine without intake mani on.

Also, me? I'll clean every electrical connector with plastic safe cleaner, just because I have to!

You've got one CCV hose on your list. The getting won't get better for an easy 'total' CCV install, with new guidetube.


And clean icv/tb/maf...I'm sure you would, but go crazy with icv cleaning!
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Old 02-17-2012, 07:36 AM   #7
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New vacuum lines, oil filter housing gasket, clean up every trace of oil, etc.
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Old 02-20-2012, 10:29 PM   #8
jvidamins
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Dmax, good call on the replacing the hard plastic pipes!!! I'd thought that my leak was caused by a bad o-ring, but turns out it's because the part the o-rings fit on had completely broken off inside my engine block! I almost didn't even realize it had happen if it weren't for a close up picture of a new one. Check it out...

Also, I pulled the other hard plastic pipe out to see how it looked and same exact thing! This is pretty crazy! I would add these to the 100% absolutely MUST reaplace after 100-150k list. I've got 184k, btw.
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Last edited by jvidamins; 02-20-2012 at 10:31 PM.
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Old 02-20-2012, 10:34 PM   #9
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Oh and here are a couple snaps of the engine with the intake off.
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Old 02-20-2012, 10:47 PM   #10
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Starter rebuilt
THIS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! You won't regret it
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Old 02-20-2012, 10:47 PM   #11
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+1 on leaks from both your VCG and OFHG

Replace the O-rings on all injectors too. Def don't want to face a leak there. These flatten with use.

Consider a crankshaft position sensor while you're in there because it's hard to reach otherwise and when broken stops your car.

Another pic with intake manifold off:
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