diff --git a/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/coalCloud1Properties b/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/coalCloud1Properties
index 2f8d97d761..60fa4fb298 100644
--- a/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/coalCloud1Properties
+++ b/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/coalCloud1Properties
@@ -179,6 +179,8 @@ subModels
         volatileData
         (
             (CH4            12)
+            (H2             12)
+            (CO2            12)
         );
         residualCoeff   0.001;
     }
diff --git a/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/sourcesProperties b/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/sourcesProperties
index 06b09abe24..31175f402b 100644
--- a/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/sourcesProperties
+++ b/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/constant/sourcesProperties
@@ -19,8 +19,8 @@ source1
 {
     type            scalarExplicitSource;
     active          true;
-    timeStart       0.15;
-    duration        0.2;
+    timeStart       0.1;
+    duration        0.4;
     selectionMode   cellSet;
     cellSet         ignitionCells;
 
@@ -29,7 +29,7 @@ source1
         volumeMode      absolute;
         injectionRate
         {
-            hs              20000;
+            hs              12000;
         }
     }
 }
diff --git a/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/system/fvSolution b/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/system/fvSolution
index 474ae84eb3..a6992031b3 100644
--- a/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/system/fvSolution
+++ b/tutorials/lagrangian/coalChemistryFoam/simplifiedSiwek/system/fvSolution
@@ -99,11 +99,11 @@ relaxationFactors
 {
     fields
     {
-        ".*Final"       1;
+        ".*"            1;
     }
     equations
     {
-        ".*Final"       1;
+        ".*"            1;
     }
 }