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2018 Nissan Pathfinder SL
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I have not worked on a QG, but did you check for a brace under the intake, the GA and SR has one.
Most lift out with the intake.....
Did you download the FSM ?
 

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2018 Nissan Pathfinder SL
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4,288 Posts
If you are sure its ready to come out, dont force anything yet....
Spin the engine over with the starter, you said the cams are out, ( pull the fuel pump fuse if you haven't already.)
The compression pressure will help you break the head free.
 

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2018 Nissan Pathfinder SL
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4,288 Posts
well it says to "Remove intake manifold rear supports." see number 8.
So these were under the intake manifold and i removed form under the car when working on the SR starter.
Will try and find a drawing or picture.
Removal
NIEM0057
1. Drain engine coolant from radiator and cylinder block.
Be careful not to spill coolant on drive belts.
2. Release fuel pressure.
Refer to EC-67 [QG18DE (except Calif. CA Model)], or EC-743
[QG18DE (Calif. CA Model)], “Fuel Pressure Release”.
3. Remove air duct to intake manifold collector.
4. Remove engine drive belts.
5. Remove front splash undercovers.
6. Remove front exhaust tube.
7. Before removing intake manifold collector from engine, the
following parts should be disconnected to remove intake manifold
collector:
 EGR tube
 Fuel injector connectors
 Ground harness
 Breather pipe
Harness connectors for:
 IACV-AAC valve
 Throttle position sensor
 Throttle position switch
 EGR temperature sensor
 Water hoses from collector
 Heater hoses
 PCV hose
Vacuum hoses for:
 EVAP canister
 Power brake booster
 Fuel pressure regulator
8. Remove intake manifold rear supports.
9. Remove exhaust manifold.
SEM870F
10. Remove ignition coils.
11. Remove spark plugs.
 

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2018 Nissan Pathfinder SL
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4,288 Posts
Let us know how it turns out, anything you learn, there are to many of there on the QG
 
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