diff --git a/constant/chemistryProperties b/constant/chemistryProperties
index 8f45f6f..4b7cafa 100644
--- a/constant/chemistryProperties
+++ b/constant/chemistryProperties
@@ -17,7 +17,7 @@ FoamFile
 
 chemistryType
 {
-    chemistrySolver   ode; //  EulerImplicit; // 
+    chemistrySolver   EulerImplicit; // ode; //  
     chemistryThermo   psi;
 }
 
diff --git a/system/fvOptions b/system/fvOptions
index 8c1505e..480e44f 100644
--- a/system/fvOptions
+++ b/system/fvOptions
@@ -19,11 +19,11 @@ source1
 {
     type            fixedTemperatureConstraint;
     active          true;
-    timeStart       0.0;
-    duration        0.1;
 
     fixedTemperatureConstraintCoeffs
     {
+        timeStart       0.0;
+        duration        0.1;
         selectionMode   cellSet;
         cellSet         ignitionCells;
 
@@ -32,7 +32,7 @@ source1
             2
             (
              (0 300)
-             (0.01 2250)
+             (0.05 2000)
             )
             ;
     }
diff --git a/system/fvSolution b/system/fvSolution
index 41233f4..6fa1e54 100644
--- a/system/fvSolution
+++ b/system/fvSolution
@@ -39,7 +39,7 @@ solvers
 
     "(U|h|k|epsilon)"
     {
-        solver          PBiCG;
+        solver          PBiCGStab;
         preconditioner  DILU;
         tolerance       1e-6;
         relTol          0.1;