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WHat is the torque specs for intake manifold....I have a bad vacuum leak

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Old Jul 16, 2009, 06:33 AM
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WHat is the torque specs for intake manifold....I have a bad vacuum leak

So I've had a bad idle issue since i got my car started....thought it was the IAC.....its brand new so what are the chances thats its bad. Spoke to a mitsubishi tech and he said for how high my car was idling (2500-3000 rpms) it sounded like a bad vacuum leak....most likely from the intake manifold. The shop I took the car too left my IAC unplugged so its idling at 1500 (1000 with AC on) but I'm getting a code TPS...most likely because its (IAC) unplugged.

I'm buying another torque wrench tonight (assuming after I spray some PB Blaster were the intake manifold and head and it gets into the motor) what is the torque specs for the bolts holding it down to the head?

I searched and didn't find anything but I'm still searching (looking over the serice manual too).
Old Jul 16, 2009, 06:53 AM
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All 12mm bolts/nuts need to be torque to 15 ft/lbs and all 14mm nuts/bolts need to be torque to 26 ft/lbs.
Old Jul 16, 2009, 07:08 AM
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thanks....trying the pb blaster test first.
Old Jul 19, 2009, 10:51 AM
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let us know how it goes man
Old Jul 19, 2009, 08:21 PM
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make sure you've got all the injector o-rings installed. I had a nasty leak that I believed to have come from the intake manifold and it turned out to be a bad oring.

Good luck!
Old Jul 19, 2009, 08:37 PM
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Not to be mean, but you didn't look very hard. Here's the list for future reference. Bookmark it.

https://www.evolutionm.net/forums/ev...cs-thread.html
Old Jul 20, 2009, 05:15 AM
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Originally Posted by AIEvo9MR
Not to be mean, but you didn't look very hard. Here's the list for future reference. Bookmark it.

https://www.evolutionm.net/forums/ev...cs-thread.html
Thats cool thanks for letting me know.

I tried the PB Blaster test and it yielded no results. I've got a lead for a Mitsu tech that works on EVO's for the dealership he works for....trying to get him to take a look, I'm tired of messing with this car.

Last edited by SmurfZilla; Jul 20, 2009 at 06:01 AM.
Old Jul 20, 2009, 05:58 AM
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Originally Posted by S2kracka
All 12mm bolts/nuts need to be torque to 15 ft/lbs and all 14mm nuts/bolts need to be torque to 26 ft/lbs.
Is that what its spec'ed at? When I took them off they required a **** ton more force than that. Felt like 60+ ft/lbs. I had to attach a makeshift breaker bar on there to get them off on the bottom of the intake
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