GM Vehicle Leaking Intake Manifolds-Anyone? - READ ONLY

29 messages, Last post on Aug 08, 2002 at 8:53 AM

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#25 of 29 Chevy Intake Manifold Petition by jrpalladino Jul 01, 2002 (2:05 pm)
There is an online petition for this problem located: http://www.petitiononline.com/GMcnsmrs/petition.html If you have had this problem please visit and sign
#26 of 29 3.1 GM/ Chevy in my Lumina APV by jaybo4 Jul 08, 2002 (11:52 am)
The intake failed on my motor too. The tube that connected the heater hose to the engine cracked off the manifold. The manifold needed to be replaced for $600. I was later told by another tech that they can drill and tap that hole and screw in a plumbing type of fitting. Too late now... Jay salem,MA
#27 of 29 3.8L repair by fordnightmare Jul 28, 2002 (3:31 am)
Anyone fix the leak on a 3.8L? What is involved? Anything to watch out for? does the intake have to be replaced or just the gasket? What comes off? I have a 91 w/throttle body. Thanks..
#28 of 29 Alero by perna Jul 30, 2002 (11:46 am)
I had the 3.4 that started leaking oil around 22k miles. Lower intake replaced under warranty, dumped the car soon afterward.
#29 of 29 repair of 3.4 by dirkdaddy Aug 08, 2002 (8:53 am)
As someone said earlier, to repair the 3.4 intake seal, you have ot do a lot of work. Disc. alternator, fuel injector rail, throttle body, upper intake, valve covers, lower intake, rockerarms loosen and pushrod removal. typically that means disconnecting the exhaust and motor mounts and tipping the motor forward. Pretty big job, but not bad if you have time and tools. I'm contemplating it myself as I have a well equipped shop, but my leak is exernal so far and very small. And its a Van, so its 2x harder. DD