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--- articles:m104_hfm_intake_rebuild [2020/11/19 09:25] – [Remove fuel rail] john5788
+++ articles:m104_hfm_intake_rebuild [2020/11/21 07:50] (current) – john5788
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-===== Procedure =====
+===== Remove air intake pipe =====
-==== Remove air intake pipe ====
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-==== Remove fuel rail ====
+===== Remove fuel rail =====
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-<col sm="6">
+<col sm="12">
   - Remove black plastic engine wiring harness cover
   - Remove fuel pressure bleed cap located towards the center of the fuel rail
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     - Metal clips may not bend all the way and a thin screwdriver can be used to gently bend the metal clips for clearance
   - Unbolt fuel rail and pull to remove. There are 5x 6mm allen bolts holding it in place.
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-==== Remove intake manifold ====
-==== Rebuild ====
+===== Remove intake manifold =====
+<grid>
+<col sm="6">
+  - Unbolt remaining bolts holding intake manifold to cylinder head
+  - Loosen both hose clamps connecting the upper and lower intake manifolds together. Located underneath the upper intake manifold
+  - Disconnect wire to resonator flap
+  - Disconnect air hoses near oil dipstick mounting bracket
+  - Lift up and remove air intake manifold
+</col>
+<col sm="6">
+<grid>
+<col sm="6">
+<thumbnail>
+{{ articles:m104lowerintakeboot.jpg?300 }}
+<caption>Loosening lower intake boot</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ articles:m104airhoses.jpg?300 }}
+<caption>Air hoses underneath intake manifold</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ articles:m104wirethrottlebody.jpg?300 }}
+<caption>Disconnect wire for resonator flap near the throttle body </caption>
+</thumbnail>
+</col>
+</grid>
+</col>
+</grid>
+===== Rebuild =====
+<grid>
+<col sm="6">
+  - Replace all vacuum lines
+  - Clean parts
+    - Intake manifold seat on cylinder head
+    - Intake manifold
+    - Throttle body boot if not replacing
+    - Intake boots if not replacing
+  - Parts to replace
+    - Intake manifold gaskets (104 141 1080, requires 6)
+    - Long lower intake hose (104 094 35 82)
+    - Short lower intake hose (104 094 36 82)
+    - Fuel injector seal (019 997 13 48, requires 12)
+</col>
+<col sm="6">
+<grid>
+<col sm="6">
+<thumbnail>
+{{ articles:m104vacuumparts.jpg?300 }}
+<caption>Vacuum parts to replace</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ articles:m104cleanthrottlebootandintakeseat.jpg?300 }}
+<caption>Cleaned throttle body boot and intake manifold seat on cylinder head</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ articles:m104intakerebuilt.jpg?300 }}
+<caption>Intake manifold cleaned up and rebuilt with new gaskets and hoses</caption>
+</thumbnail>
+</col>
+<col sm="6">
+<thumbnail>
+{{ articles:m104injector.jpg?300 }}
+<caption>M104 injector with 2 seals that need to be replaced </caption>
+</thumbnail>
+</col>
+</grid>
+</col>
+</grid>