IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Back Bolt on Intake Manifold

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Old 01-15-19, 12:00 PM
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sxwk12
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Originally Posted by MikeFig82
If you haven't put the manifold back on. Make sure you get the support bolts back in first, and hand tighten them.
Then secure the allen bolts in then come back and tighten the support bolts.

The 10mm by the throttle body, 12mm on valve cover, and last the one 12mm behind the manifold.
I put it all back together last night. But didn't do it like that. I tightened up the support bolts then the hex bolts, the 2 nuts then the throttle body. Will there be an issue?
Old 01-15-19, 12:18 PM
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MikeFig82
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Originally Posted by sxwk12
I put it all back together last night. But didn't do it like that. I tightened up the support bolts then the hex bolts, the 2 nuts then the throttle body. Will there be an issue?
Two things for this. One is that if you have misalignment you won't be able to align the support bolts in place.

Second is it might not let the gaskets sit on the plenum to seal correctly evenly.

As long as you don't have a Vacuum leak. You should be ok.
Old 01-15-19, 12:22 PM
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EZLex
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How did your sparks look? Was that the first time they've been changed in 130k? Clean the throttle body aswell while you had it apart?
Old 01-15-19, 12:56 PM
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Originally Posted by EZLex
How did your sparks look? Was that the first time they've been changed in 130k? Clean the throttle body aswell while you had it apart?
Spark plugs looked awful. One of them was really crusty. And I found out last night that the car has 147,000 miles on it and yes it was the first time that have been changed.
Old 01-15-19, 12:57 PM
  #20  
sxwk12
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Originally Posted by MikeFig82
Two things for this. One is that if you have misalignment you won't be able to align the support bolts in place.

Second is it might not let the gaskets sit on the plenum to seal correctly evenly.

As long as you don't have a Vacuum leak. You should be ok.
No leaks or anything. My son said it drives GREAT.
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