I am replacing the intake gasket on my 2005 pacifica and need the torque specs and sequence tighten it back down

The 2014 Chevy Spark intake manifold torque sequence and torque specs depend on the engine type. Here are the torque specs and sequence for each engine type:
1.0L Engine:

• Step 1: Tighten the bolts to 44 inch-pounds (5 Nm).
• Step 2: Tighten the bolts to 89 inch-pounds (10 Nm).
• Step 3: Tighten the bolts to 18 lb-ft (25 Nm).

Torque sequence: 8 4 1 5 9 7 3 2 6 10
1.2L Engine:

• Step 1: Tighten the bolts to 44 inch-pounds (5 Nm).
• Step 2: Tighten the bolts to 89 inch-pounds (10 Nm).
• Step 3: Tighten the bolts to 18 lb-ft (25 Nm).

Torque sequence: 8 4 1 5 9 7 3 2 6 10
It's important to follow the torque sequence and torque specs carefully to ensure that the intake manifold is properly secured and sealed. Over-tightening or under-tightening the bolts can cause leaks or damage to the engine.

Wildly varying advice. I would use the lower amounts. They are not under a lot of pressure and you don't want to compress the new gasket too much.

https://www.google.com/search?q=toyota+camry+2.4+valve+cover+bolt+torque+specs

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First, without a picture to guide, orientation of the bolt torque pattern. Looking back toward the engine from the front; Forward refers to the bolt position toward the front of the car / aft is toward the cars rear:

1st bolt is forward, 3rd from the left
2nd is aft, 3rd from left
3rd is forward, 2nd from left
4th is aft, 2nd from left
5th is forward, 1st on the right
6th is aft, 1st on right
7th is forward, 1st on left
8th is aft, 1st on the left

The following is from the GM 2005 Chevy Equinox service manual;

Notice
Maximum gasket performance is achieved when using new fasteners, which contain a thread locking patch. If the fasteners are not replaced, a thread locking chemical must be applied to the fastener threads. Failure to replace the fasteners or use thread locking chemical MAY reduce gasket sealing capability.

Notice
Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners to avoid damage to fasteners and systems.

IMPORTANT: All lower intake manifold bolts need to be cleaned, free of any foreign material, and reused - only if new bolts are unavailable. Use GM P/N 12345382 (Canadian P/N 10953489) or equivalent and apply to the old intake manifold bolt threads.

IMPORTANT: Manufacturer recommends the center bolts be fully torqued before the diagonal bolts to assure proper seal ability.

IMPORTANT: Lower intake manifold bolts in positions 6 and 7 should be torqued to specification using a crows foot type tool.

Install the lower intake manifold bolts.
a. Tighten the lower intake manifold bolts (1, 2, 3, 4) in sequence to 7 N-m (62 lb in) on the first pass.
b. Tighten the lower intake manifold bolts (5, 6, 7, 8) in sequence to 13 N-m (115 lb in) on the first pass.
c. Tighten the lower intake manifold bolts (1, 2, 3, 4) in sequence to 13 N-m (115 lb in) on the final pass.
d. Tighten the lower intake manifold bolts (5, 6, 7, 8) in sequence to 25 N-m (18 lb ft) on the final pass.

1st stage 9 ftlbs
2nd stage 21 ft lbs
Note the torque sequence. This info is for 3.8L engine. The torque specs came from autodata tune-up cd, it has a lot of torque specs for different makes--models--years. If somebody has info from a better database, please jump in. All databases are not created equal.

What torque specs? Looking for a mind reader as well?

when you replaced the intake gaskets you over tightened the bolts and cracked the plastic on the new gaskets or cracked them replacing the intake on the engine or the bolts needed to be replaced cause they were stretched or the wrong gaskets where sold to you and you have a vacuum leak these are the most common causes of the problem you are explaining the newer intake gaskets are very sensitive to over tightening you really have to be carefull and follow the tightening sequence and torque specs

Quote:





Originally Posted by norvelplagbao52

1993 saturn sl2 1.9 dohc cylinder head torque
specs and sequence
Cylinder head bolt
tightening procedure:
CYLINDER HEAD BOLT TIGHTENING SEQUENCE:

INTAKE
SIDE
8 4 1 5 9

7 3 2 6 10
EXHAUST SIDE

In sequence,
torque the cylinder head bolts. Torque: 30 Nm (22 ft-lbs).
In sequence,
torque all bolts. Torque: 50 Nm (37 ft-lbs)
In sequence, turn each bolt an
additional 90 degrees.





Originally Posted by norvelplagbao52

1993 saturn sl2 1.9 dohc cylinder head torque
specs and sequence
Cylinder head bolt
tightening procedure:
CYLINDER HEAD BOLT TIGHTENING SEQUENCE:

INTAKE
SIDE
8 4 1 5 9

7 3 2 6 10
EXHAUST SIDE

In sequence,
torque the cylinder head bolts. Torque: 30 Nm (22 ft-lbs).
In sequence,
torque all bolts. Torque: 50 Nm (37 ft-lbs)
In sequence, turn each bolt an
additional 90 degrees.

According to Haynes Manual, 2005 Nissan Altima, using BRAND NEW cylinder head bolts:

1 - Tighten in sequence (as pictured) to 37 ft-lbs.
2 - Tighten an additional 60 degrees.
3 - Loosen all bolts completely.
4 - Tighten in sequence 26 - 32 ft-lbs.
5 - Tighten in sequence an additonal 75 degrees.
6 - Tighten in sequence an additional 75 degrees.

Intake manifold using new gaskets. Torque the bolts, in sequence, to 105 inch lbs. (12 Nm)...



Fig. Intake manifold torque sequence-3.7 & 4.7L engines


Hope this help (remember comment and rated this).

looks like there is special sequence to reassemble and tightening, a quick note replace any bolts that have two punch marks.tighten as follows: x x x x x 10 4 2 6 8 x x x x x 7 5 1 3 9 torque all down to 15 ft lbs torque to 30 ft lbs plus 90 degrees. Good luck!