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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

I keep getting moisture on my plugs!!!

  • Thread starter Thread starter 98E9GT
  • Start date Start date Sep 15, 2008

98E9GT

New Member
Dec 16, 2007
110
0
0
Sep 15, 2008
#1
  • Sep 15, 2008
  • #1
I did a PI intake install a month ago or so, now my driver side two middle plugs keep getting water in them. When normal driver conditions are present car seems great. But when I accelerate and hit about 4500RPMS it starts sputtering like fouled plugs(put new ones in with install, wires too!), then right after that first pull it starts running like crap even under normal driving. I usually just pull out the wires and wipe them off, blow some air onto the plugs, and she runs fine. Should I check torque on the intake bolts, I remember some of the bolts didnt go in easy. Or should I just RTV around those wire boots and seal it. Im just lost, Im thinking a coolant port isnt sealed right. It isnt much water, just droplets on the plug boots,a and I cant see hardly anything around the plug(to dark).
 

BurningRubber

10 Year Member
Dec 6, 2004
1,865
24
58
Sep 15, 2008
#2
  • Sep 15, 2008
  • #2
Sounds like the intake manifold gasket didn't seal right.

Im not 100% up on PI intake swaps, but isnt there a coolant passage you need to block off or something?

Either way, I almost could garantee that is your problem. I test drove a GT after an intake manifold swap and coolant was seeping in the plugs. Under any load it would start to misfire, but it was ok under normal conditions.
 

98E9GT

New Member
Dec 16, 2007
110
0
0
Sep 15, 2008
#3
  • Sep 15, 2008
  • #3
Well the guy I bought the intake from included some gaskets, and told me they were PI, but when i received the gaskets they were NON PI, so I had to make use of what I had and RTVed the intake ports, the coolant ports matched up great. I really dont want to mess with this again, because I got pissed at the EGR tube and moved it out of the way, and its now really hard to mount it to the back of the intake plenum.
 

SVT32VDOHC

waiting for the next hack atta
Founding Member
Nov 22, 2001
3,501
28
119
Motor City
Sep 16, 2008
#4
  • Sep 16, 2008
  • #4
Put some di-electric grease in the boots to help fight the corrosion and water. Check your gaskets too while your there.
 

98E9GT

New Member
Dec 16, 2007
110
0
0
Sep 16, 2008
#5
  • Sep 16, 2008
  • #5
Oh great idea svt32, doesn't autozone carry that stuff few a couple bucks? Is there anything else I can do while down there? Can I hog out some intake ports on the head while its still attached to the block?
 
F

FineLineMtrsprts

Founding Member
Jul 4, 2000
359
0
16
Inwood, West Virginia
Sep 17, 2008
#6
  • Sep 17, 2008
  • #6
Yeah sounds like something in the intake didnt seal up right. Had the problem before i did my PI longblock swap. Also pick up the Di-electric grease and put it on ALL the boots
 
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