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ccman
Dodge Dakota
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4/14/2007
23:52:34
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 Subject: plenum gasket test
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Message:
i did the test that Larry told me about. Pull vent from pass. valve cover and pull pcv from drivers valve cover but leave plugged into throttle body hose and put thumbs over both holes. If it sucks in it's bad, if it blows out it's ok. It doesn't suck in or blow out. what does that mean? I looked into the throttle body and it looks slightly coated with oil but it's clean and not pooling. almost like the plate was coated from factory or something to help with anti corrosion, dunno!!! what do you think. i've no signs of bad plenum or oil useage, just though at 70k miles i would inquire about it. also, anyone have torque setting for the intake manifold bolts. thought i might check them. i have to put valve cover gaskets on, mine have become slightly leaky and are pooling into the spark plug holes. would rubber gasket or fel-pro type gasket be better?
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TuckerLdlow
Dodge Dakota
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4/15/2007
00:15:10
| RE: plenum gasket test
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Mine (also an '02) are silicone, and still stock. When you torque the manifold bolts, you might try torqueing the valve cover bolts and see if that doesn't solve your leak problem.
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ccman
Dodge Dakota
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4/15/2007
01:56:10
| RE: plenum gasket test
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the valve cover bolts are already pretty tight. i specifically remember tightening them up not too long after i bought it. i got it new and couldn't believe the covers were leaking and that's when i noticed them being loose, probly break in loosened them a bit, dunno!!
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OBIO3
Dodge Dakota
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4/16/2007
04:04:25
| RE: plenum gasket test
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Message:
You never mentioned torquing the valve cover when you tightened them. They are not very tight. If you over tighten them they distort and leak. With all the PCV hoses connected, start the engine and remove the oil fill cap. put your hand tight over the hole and after a short time remove it fast. There should be a suction . If not, 2 other things can happen. No suction and/or no pressure buildup, both of which are wrong. Check to see if the PCV is plugged. If so clean it. Try blowing through the hose going from the PCV to the engine. It should blow freely. If not clean it. If you have replaced the PCV and you got it at a parts store, Most of those are universal and don't work on Dakotas . Go to the dealer for the proper one.
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ccman
Dodge Dakota
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4/17/2007
23:17:34
| RE: plenum gasket test
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Message:
anyone know the torque specs off hand for the valve covers? i'm replacing the gaskets and want to get it right. also, there are two different gaskets available. one is all silicone and the other is the traditional fel-pro type. does it matter which one?
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J and J Auto
GenII
4/19/2007
00:46:34
| RE: plenum gasket test
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Message:
If you suspect the pcv bad replace it
A slight oil coating in the intake is normal
comes from the pcv line
Intake manifold bolts 12 foot pounds
center out in a x patteren
valve covers 7
Get the org gaskets from chrysler the after market
gaskets rubber are junk
Larry
J&J Auto
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ccman
Dodge Dakota
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4/19/2007
01:55:29
| RE: plenum gasket test
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can you explain what center out would be when tightening. i understand the x pattern but i thought the bolts for the intake manifold were only along the outsides of the manifold. don't recall any in the center other than the throttle body.
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dakota49
Dodge Dakota
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4/27/2007
20:10:43
| RE: plenum gasket test
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Message:
What he means by "center out" is you start with the bolts in the middle of the bolt pattern then X and to the ends of the manifold.
I hope that helps
dakota49
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OBIO3
Dodge Dakota
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4/29/2007
17:09:49
| RE: plenum gasket test
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Message:
I'm most likely to late here But just for giggles use the same pattern on the valve covers. Of most important is how you torque and actually this applies to any torqued item. Work your way up in at least 2 steps on lightly torqued items and 3 or 4 steps on the others. This helps warping and/or bending items.
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J and J Auto
GenII
5/01/2007
01:14:47
| RE: plenum gasket test
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Message:
yes from center to ends and x ing side to side
snug all down than 4 8 12 footpounds
If you replace the plentium gasket use some
high tac either in a spray can or brush type
both sides of gasket
This stuff never hardend cures to like a hard
rubber I use it on all the pletiums
Use nothing on the intake gaskets but in all 4
corners where the intake meats the manifold end
gaskets put a bead of black RTV silicon the 2
short vally cover gaskets I put a bead down
install the ends and intake and than another
bead over the top this will asure no oil seapage
from the ends
If you do suspect a leak chrysler also has a dye
you add to the oil and if the pletium is leaking
you will see it
I never have any problems leaking when there
redone and using the high tac sealer
what happens is the intake being Alm and the
cover being steel the expantion and contraction
rates are diff that is what eventually causes
them to leak the high tac staying flexible
they will not develope a leak
no silicon use high tac on these plentium covers
Larry
J&J Auto
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