E63 Intake manifold leak
Thread Starter
Super Member
Joined: Nov 2010
Posts: 746
Likes: 48
From: Queens,NYC
2014 E63s 1993 mazda rx7 on Boost
E63 Intake manifold leak
I did a test by spraying MAF cleaner around intake and had idle change at the front of intake. I have no CEL. Can I get away with a re-torque of the intake bolts and not change the gasket. Car has 64k dealer said the intake was never done. No Wrnty. I did this work on my BMW 540 not a big deal.
If I have to change gasket what else should I swap out since I am in the area.
Any simple upgrade I can do at this time?
If I have to change gasket what else should I swap out since I am in the area.
Any simple upgrade I can do at this time?
Senior Member
Joined: Sep 2006
Posts: 402
Likes: 0
From: West Tennessee
E63,,,not any more,,,BMW X5 50i
I had this done under warranty, it was under warranty at the time. There is (was) an issue with the manifold gasket. I had the same leak you did and at first they didn't believe me, then they did it and confirmed it. Mine didn't show a CEL either,, so I don't know how it could have a leak and not be detected.
Thread Starter
Super Member
Joined: Nov 2010
Posts: 746
Likes: 48
From: Queens,NYC
2014 E63s 1993 mazda rx7 on Boost
I dont see a problem and no CEL
I saw others with this problem and decided to check it out.
I took MAF cleaner and spray it around the intake front of motor and the idle change as if the car has a misfire that is how I know I have a leak.
I check all hoses making sure it not a hose. No hissing at idle nothing at all. But after my test I know I have a leak. 65k
With stock air filters I have no CEL with KNN I get a CEL for lean at idle which means more air that can be from the added air from KNN filters and the leak combine. Stock filters and no CEL light. I did not even clear the light it went away.
I really just want to snug the bolts down before doing the removal and all that work.
I took MAF cleaner and spray it around the intake front of motor and the idle change as if the car has a misfire that is how I know I have a leak.
I check all hoses making sure it not a hose. No hissing at idle nothing at all. But after my test I know I have a leak. 65k
With stock air filters I have no CEL with KNN I get a CEL for lean at idle which means more air that can be from the added air from KNN filters and the leak combine. Stock filters and no CEL light. I did not even clear the light it went away.
I really just want to snug the bolts down before doing the removal and all that work.
Junior Member
Joined: Apr 2011
Posts: 58
Likes: 0
From: NJ
M3 & E63 & SL55
I saw others with this problem and decided to check it out.
I took MAF cleaner and spray it around the intake front of motor and the idle change as if the car has a misfire that is how I know I have a leak.
I check all hoses making sure it not a hose. No hissing at idle nothing at all. But after my test I know I have a leak. 65k
With stock air filters I have no CEL with KNN I get a CEL for lean at idle which means more air that can be from the added air from KNN filters and the leak combine. Stock filters and no CEL light. I did not even clear the light it went away.
I really just want to snug the bolts down before doing the removal and all that work.
I took MAF cleaner and spray it around the intake front of motor and the idle change as if the car has a misfire that is how I know I have a leak.
I check all hoses making sure it not a hose. No hissing at idle nothing at all. But after my test I know I have a leak. 65k
With stock air filters I have no CEL with KNN I get a CEL for lean at idle which means more air that can be from the added air from KNN filters and the leak combine. Stock filters and no CEL light. I did not even clear the light it went away.
I really just want to snug the bolts down before doing the removal and all that work.
Trending Topics
Thread Starter
Super Member
Joined: Nov 2010
Posts: 746
Likes: 48
From: Queens,NYC
2014 E63s 1993 mazda rx7 on Boost
M&AMG...check see if you have a leak for the fun of it..
I would never have known I had an intake leak if not for seeing so many failed gaskets and it was an easy test to perform.
Take a can of Gumout and spray it in the front of the intake at idle and give it a good shot where the front bolts are located. You might have a leak and not even know it.
Local dealer said he seen them at 15k some even lower. He is amazing at 65k only now I get it. I think it was leaking all along and no CEL so no one notice.
Take a can of Gumout and spray it in the front of the intake at idle and give it a good shot where the front bolts are located. You might have a leak and not even know it.
Local dealer said he seen them at 15k some even lower. He is amazing at 65k only now I get it. I think it was leaking all along and no CEL so no one notice.
MB World Stories
The Best of Mercedes & AMG
7 Craziest Things AMG Gas Ever Built
Verdad Gallardo
New Electric Mercedes-AMG GT 4-Door Coupe Unveiled: 10 Things You Need to Know
Verdad Gallardo
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)
Verdad Gallardo
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
Member
Joined: Jun 2011
Posts: 215
Likes: 0
From: Central N.J.
94/95 Supra,07 E63 AMG
^ how much is "a good shot '? That is where mine was leaking from.I sprayed a steady stream down the front right area and I seen a stumble. The STAR machine also reflected # 6 and 7 cyl when the stuble occured.
Thread Starter
Super Member
Joined: Nov 2010
Posts: 746
Likes: 48
From: Queens,NYC
2014 E63s 1993 mazda rx7 on Boost
23.. you have an intake leak I am 99.9% sure of it
"A good shot" i would say steady spray for about 4-5 seconds. If you just mist it spray spray nothing... Spray hold and just move left to right on the front you will see the idle stumble. Seem like the front is the first area to go bad. Raining here for the next week and no indoor parking or else I would make a youtube clip of it. When i did it first I notice nothing until I kep the spray on it.
Thread Starter
Super Member
Joined: Nov 2010
Posts: 746
Likes: 48
From: Queens,NYC
2014 E63s 1993 mazda rx7 on Boost
Jugger both of those supras are animals...I am a rotary FD guy
I also have a TT90 z and friends with supra and Evos.. All those tuners are pusing 700+ amazing what boost will do.. Well the rotary is the little engine that could... I might do the intake gasket in about 3 weeks when I get back from Nascar.
