Emmisions looking tube coming up from drivers exhaust manifold going up to front of intake and threading into it.

The simple answer is yes! To both! A blown head gasket will cause a lack of compression and either a black or white exhaust emmision. Improper intake manifold seal will cause rough idle or high idle.

Look on the intake manifold there will be a 3/8 hose attached to it going to the throttle body or the air intake tube that attaches to the throttle body.

TORQUE SPECIFICATIONSDescriptionNmLb-FtLb-InEngine Air Cleaner Tube Clamps1.6-2.2-14-19Engine Control Sensor Wiring Through Bolts2.5-3.5-23-30Generator to Bracket Bolt3727-Generator to Cylinder Head Bolt4835-Generator Brace to Upper Intake Manifold Bolts and Nut12-209-14-Intake Manifold Support to Throttle Body8-12-71-106Intake Manifold Support to RH Cylinder Head40-5530-40-Degas Tube to Upper Intake Manifold Bolts8-12-71-106Camshaft Sprocket to Camshaft Bolt50-7037-51-Camshaft Thrust Plate Bolt10-88Coil and Bracket to Cylinder Head Bolt40-5530-40-Connecting Rod Nut31-3923-28-Crankshaft Damper to Crankshaft Bolt125-16593-121-Crankshaft Pulley to Damper (4 Bolts)40-6030-44-Cylinder Head Retaining Bolt(1)(1)-Accelerator Cable Shield Bolts1.4-13Camshaft Position Sensor Housing Retaining Bolt2417-EGR Tube Connector to Exhaust Manifold40-4730-34-EGR Valve to Upper Intake Manifold Bolt20-3015-22-EGR Tube to EGR Valve and Exhaust Manifold35-6526-47-Exhaust Manifold Bolt/Stud20-2515-18-Flywheel to Crankshaft Bolt73-8754-64-Fuel Injection Supply Manifold to Intake Manifold8-12-71-106Throttle Cable Bracket1713-Dual Converter Y Pipe to Exhaust Manifolds34-4725-34-Crankshaft Position Sensor Bolts5-7-45-61Intake Manifold to Cylinder Head Bolt (5)(2)(2)-Main Bearing Cap Bolt75-8556-62-Oil Drain Plug11-169-11-Oil Filter Insert to Cylinder Block27-4020-29-Oil Filter to Oil Filter Adapter(3)(3)-Oil Galley and Cooling Jacket Plugs2014-Oil Level Indicator Tube to Exhaust Manifold Nut16-2012-14-Engine to Transaxle/Torque Converter Assembly Bolts40-6030-44-Torque Converter Nuts27-4620-33-Transmission Range Sensor Nut16-2212-16-Front Sub-Frame-to-Body Bolts77-10357-75-Oil Pressure Sensor16-2212-16-Oil Pump to Cylinder Block Bolt40-5530-40-Power Steering Bracket to Cylinder Head Bolt40-5530-40-Valve Cover to Cylinder Head Bolts/Studs (5)10-14-89-123Right Exhaust Manifold Heat Shield Retaining Bolts8-12-71-106Rocker Arm Seat to Cylinder Head Bolt(4)(4)-Water Outlet Connection to Intake Manifold Bolt10-14-89-123Upper Intake Manifold to Lower Intake Manifold Bolt/Stud20-3015-22-Engine Front Cover to Cylinder Block Bolt (No. 1-10)2518-Engine Front Cover to Cylinder Block Bolt (No. 11-15)10-88Water Pump Pulley to Hub (4 Bolts)20-3015-22-Water Pump to Front Cover Bolt8-12-71-106Wiring Retainer Bracket Nut20-3015-22-Valve Tappet Guide Plate to Cylinder Block10-14-89-123Ignition Coil Bracket40-5530-40-Oil Pan to Cylinder Block Bolt10-14-89-123Water Bypass Tube Nut20-3015-22-Crankshaft Pulley Bolts40-5530-40-

1. Tighten in four steps (refer to illustration in Cylinder Head Installation for tightening sequence):
   • Tighten in sequence to 70-90 Nm (52-66 Lb-Ft)
   • Then back off all bolts 360 degrees
   • Tighten in sequence to 45-55 Nm (34-40 Lb-Ft)
   • Tighten in sequence to 85-99 Nm (63-73 Lb-Ft)
2. Tighten in two steps
   • 20-30 Nm (15-22 Lb-Ft)
   • 26-32 Nm (20-23 Lb-Ft)
3. Advance 3/4 to 1 turn after gasket contacts sealing surface or tighten to 13-15 Nm (10-11 Lb-Ft).
4. Tighten in two steps:
   • 7-15 Nm (6-11 Lb-Ft)
   • 26-38 Nm (20-28 Lb-Ft)
5. Refer to illustration in the Cylinder Head Installation procedure for tightening sequence.

It has to have a tube or pipe going to it
from the exhaust manifold

It has to have vacuum hoses going to it
That is a dead give away

It could have a wiring harness connected to it.

As you said it has to let exhaust gases into the intake

Look for a picture on the internet or ask a neighbor
to show you

The bolts should have thread lock on them when installing, and the torque is done in 2 steps. 33 ft lbs. and then 90 deg. after that on the second pass. 3.1L Engine CAUTION
Observe all applicable safety precautions when working around fuel. Whenever servicing the fuel system, always work in a well ventilated area. Do not allow fuel spray or vapors to come in contact with a spark or open flame. Keep a dry chemical fire extinguisher near the work area. Always keep fuel in a container specifically designed for fuel storage; also, always properly seal fuel containers to avoid the possibility of fire or explosion. LEFT SIDE (FRONT)

1. Properly relieve the fuel system pressure.
2. Disconnect the negative battery cable.
3. Drain the cooling system into a suitable container.
4. Disconnect the top half of the air cleaner assembly, then remove the throttle body air inlet duct.
5. Remove the exhaust crossover pipe heat shield and crossover pipe.
6. Disconnect the spark plug wires from spark plugs and looms then route the wires out of the way.
7. Remove the rocker arm (valve) covers.
8. Remove upper intake plenum and lower intake manifold.
9. Remove the left side exhaust manifold.
10. Remove oil level indicator tube. NOTE: When removing the valve train components they must be kept in order for installation in the same locations they were removed from.
    
11. Remove rocker arms nut, rocker arms, balls and pushrods.
12. Unfasten the cylinder head bolts evenly, then remove the cylinder head from the engine compartment. Remove and discard the gasket. To install:
    
13. Clean all the gasket surfaces completely. Clean the threads on the cylinder head bolts and block threads.
14. Place the cylinder head gasket in position over the dowel pins on the cylinder block so the words THIS SIDE UP are showing.
15. Coat the bolt threads lightly with sealer, then install finger-tight.
16. Tighten the cylinder head bolts in sequence to 33 ft. lbs. (45 Nm). With all the bolts tightened make a second pass tightening all the bolts an additional 90°.
17. Install the pushrods, rocker arms, balls and rocker arm nuts in their proper locations. Tighten the rocker arm nuts to 18 ft. lbs. (25 Nm).
18. Install the lower intake manifold and upper intake plenum.
19. Install the rocker arm (valve) covers.
20. Install the oil level indicator tube. Insert the dipstick.
21. Connect the spark plug wires to spark plugs and looms.
22. Install the left side exhaust manifold.
23. Install the exhaust crossover pipe and heat shield.
24. Refill the cooling system.
25. Install the top half of the air cleaner assembly and the throttle body air inlet duct.
26. Connect negative battery cable.
27. Start vehicle and verify that there are no leaks. Fig. 20: Cylinder head mounting and bolt tightening sequence - 3.1L engine
    

RIGHT CYLINDER HEAD (REAR) CAUTION
Fuel Injection systems remain under pressure, even after the engine has been turned OFF. The fuel system pressure must be relieved before disconnecting any fuel lines. Failure to do so may result in fire and/or personal injury.

1. Relieve the fuel system pressure.
2. Disconnect the negative battery cable.
3. Drain the cooling system.
4. Remove the top half of the air cleaner assembly and remove the throttle body air inlet duct.
5. Remove the exhaust crossover pipe heat shield and crossover pipe.
6. Raise and safely support the vehicle.
7. Detach the Oxygen (O2) sensor connector.
8. Disconnect the exhaust pipe from the exhaust manifold.
9. Remove the right side exhaust manifold.
10. Carefully lower the vehicle.
11. Disconnect the spark plug wires from spark plugs and wire looms and route the wires out of the way.
12. Remove the rocker arm (valve) covers.
13. Remove upper intake plenum and lower intake manifold. NOTE: When removing the valve train components they must be kept in order for installation in the same locations they were removed from.
    
14. Remove rocker arms nut, rocker arms, balls and pushrods.
15. Unfasten the cylinder head bolts evenly, then remove the cylinder head from the engine compartment. Remove and discard the gasket. To Install:
    
16. Clean all the gasket surfaces completely. Clean the threads on the cylinder head bolts and block threads.
17. Place the cylinder head gasket in position over the dowel pins on the cylinder block so the words THIS SIDE UP showing.
18. Coat the bolt threads lightly with sealer, then install finger-tight.
19. Tighten the cylinder head bolts in sequence to 33 ft. lbs. (45 Nm). With all the bolts tightened make a second pass tightening all the bolts an additional 90°.
20. Install the pushrods loosely retained with the rocker arm assemblies. Make sure all pushrods are in the correct locations. Coat the ends of the pushrods with prelube. The intake rods are marked yellow and are 5 3?4 inch long. The exhaust pushrods are marked green and 6 inches long. balls and rocker arm nuts. Tighten the rocker arm nuts to 18 ft. lbs. (25 Nm).
21. Install the lower intake manifold and upper intake plenum.
22. Install the rocker arm (valve) covers.
23. Connect the spark plug wires to spark plugs and wire looms.
24. Raise and safely support the vehicle.
25. Install the exhaust manifold.
26. Connect the exhaust pipe to the exhaust manifold.
27. Carefully lower the vehicle.
28. Connect the Oxygen (O2) sensor wiring.
29. Install the exhaust crossover pipe and heat shield.
30. Refill the cooling system.
31. Install the top half of the air cleaner assembly and the throttle body air inlet duct.
32. Connect negative battery cable.
33. Start vehicle and verify that there are no leaks.

EGR tube from intake to exhaust manifold.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/flavio_517b938f50183b92

3.4L Engine To Remove:

1. Remove the lower intake manifold.
2. Remove the exhaust crossover pipe.
3. If removing the right cylinder head, remove the catalytic converter from exhaust manifold.
4. If removing the left cylinder head, remove the engine oil dipstick and tube.
5. Remove the rocker arms and pushrods.
6. Remove and discard the cylinder head bolts.
7. Remove the cylinder head.
8. Clean the mating surfaces on the following items:
   • Cylinder head
   • Cylinder block
   • Intake manifold
9. Clean the cylinder block bolt threads.

NOTE: During disassembly, keep the valve train components together for proper location during assembly.
To Install:
NOTE: Coat the cylinder head bolt threads using thread sealer.

1. If removed, install the following components:
   • Exhaust manifold
   • Accessory studs
   • Spark plugs
2. Place the cylinder head gasket in position over the dowel pins. Ensure that the THIS SIDE UP note is showing.
3. Install the cylinder head. Cylinder head torque sequence ’99-‘00
   
   Cylinder head torque sequence ’01-05
   
   
4. Install the new cylinder head bolts.
   • Tighten the cylinder head bolts a first pass to 44 ft lb (60 Nm).
5. Tighten the cylinder head bolts in sequence an additional 95 degrees.
6. Install the intake gasket.
7. Install the pushrods and rocker arms.
8. Raise and support the vehicle.
9. Install the catalytic converter and dipstick tube and indicator if removed.
10. Lower the vehicle.
11. Install the exhaust crossover pipe.
12. Install the intake manifolds.
13. Connect negative battery cable.
14. Fill the cooling system.

most likely to come from the EGR valve or Emmisions controller. this also regulates the idle control valve and amount of pressure going to the intake manifold.

hope this helps

96 escort 1.9L




Engine Components
Item Part Number Description 1 6766 Oil Filler Cap 2 6A548 (8 Req'd) Valve Cover Bolt 3 6582 Valve Cover 4 — Exhaust Manifold Shield-to-Exhaust Manifold Nut (4 Req'd) 5 9A462 Exhaust Manifold Shield 6 — Exhaust Manifold Shield Stud (4 Req'd) 7 9430 Exhaust Manifold 8 9454 Exhaust Manifold Nut 9 9448 Exhaust Manifold Gasket 10 — Exhaust Manifold Stud (Fine Thread), Short (4 Req'd) 11 — Exhaust Manifold Stud, Long (1 Req'd) 12 — Exhaust Manifold Stud (Medium Thread), Short (1 Req'd) 13 6518 Valve Spring Retainer Key 14 6514 Valve Spring Retainer 15 6513 Valve Spring and Damper, Intake 16 6C515 Valve Tappet Guide Plate Retainer 17 6571 Valve Stem Seal 18 6513 Valve Spring, Exhaust 19 12405 Spark Plug 20 6269 Camshaft Thrust Plate 21 — Camshaft Thrust Plate Bolt (2 Req'd) 22 — Cup Plug 23 6B273 Camshaft Oil Flow Control Rod 24 6K292 Camshaft Front Seal 25 6256 Camshaft Sprocket 26 6278 Camshaft Sprocket Washer 27 6K252 Camshaft Sprocket Retaining Bolt 28 6L269 Camshaft Sprocket Key (5 x 18) 29 6250 Camshaft 30 6051 Head Gasket 31 6A008 Cylinder Head to Block Dowel 32 6010 Cylinder Block 33 6507 Intake Valve 34 6505 Exhaust Valve 35 6049 Cylinder Head 36 — Intake Manifold Stud (7 Req'd) 37 17A084 Engine Lifting Eye 38 — Engine Lifting Eye Bolt (2 Req'd) 39 9439 Intake Manifold Gasket 40 — Bolt 41 9723 Accelerator Cable Bracket 42 9424 Intake Manifold 43 — Intake Manifold Nut (7 Req'd) 44 9D476 EGR Valve Gasket 45 — Exhaust Gas Recirculation (EGR) Valve Bolt (2 Req'd) 46 9D475 EGR Valve 47 — Fuel Injection Supply Manifold Bolt
(2 Req'd) 48 9F593 Fuel Injector 49 9D930 Fuel Charging Wiring 50 6786 Oil Level Indicator Tube Bracket 51 — Oil Level Indicator Tube Bracket Bolt 52 6754 Oil Level Indicator Tube 53 6750 Oil Level Dipstick 54 9D280 Fuel Injection Supply Manifold 55 — Vacuum Fitting 56 9E498 Main Emission Vacuum Control Connector 57 — Vacuum Tap 58 — Vacuum Hose 59 9B989 Throttle Position Sensor 60 — Screw and Washer 61 9F782 Throttle Position Sensor Gasket 62 — Throttle Body Bolt (4 Req'd) 63 — Idle Air Control (IAC) Valve Bolt
(2 Req'd) 64 9F715 Idle Air Control Valve 65 9F670 Idle Air Control Gasket 66 9E926 Throttle Body 67 9E936 Throttle Body Gasket 68 — Vacuum Fitting 69 — Camshaft Position Sensor Screw 70 6B288 Camshaft Position Sensor 71 8255 Water Hose Connection Gasket 72 — Water Hose Connection Bolt (3 Req'd) 73 8592 Water Hose Connection 74 8575 Water Thermostat 75 6065 Cylinder Head Bolts 76 6500 Valve Tappet 77 6K512 Valve Tappet Guide Plate 78 6564 Rocker Arm 79 6A528 Rocker Arm Seat 80 6A527 Rocker Arm Bolt (8 Req'd) 81 — Ignition Coil Mounting Bracket Bolt
(3 Req'd) 82 18827 Noise Filter Condenser 83 — Ignition Coil Mounting Bolt (4 Req'd) 84 12259 Spark Plug Wire Set 85 12029 Ignition Coil 86 12043 Ignition Coil Mounting Bracket A — Tighten to 5-12 Nm (4-9 Lb-Ft) B — Tighten to 5-7 Nm (3-5 Lb-Ft) C — Tighten to 21-26 Nm (16-19 Lb-Ft) D — Tighten to 2-10 Nm (1.5-7 Lb-Ft) E — Tighten to 8-13 Nm (6-9 Lb-Ft) F — Tighten to 40-55 Nm (30-41 Lb-Ft) G — Tighten to 16-20 Nm (12-15 Lb-Ft) H — Tighten to 20-30 Nm (15-22 Lb-Ft) I — Tighten to 8-10 Nm (6-8 Lb-Ft) J — Tighten to 8-11 Nm (6-9 Lb-Ft) K — Tighten to 23-30 Nm (17-22 Lb-Ft) L — Tighten to 20-40 Nm (15-30 Lb-Ft) M — Tighten to 4.5-7 Nm (3-5 Lb-Ft) N — Tighten to 18-26 Nm (13-19 Lb-Ft)

It is Threaded and you can Use Epoxy or even Gas Line Sealing Tape to seal the Pipe. Please Rate My Response! Thanks!