diff --git a/doc/changelog.d/3554.added.md b/doc/changelog.d/3554.added.md
new file mode 100644
index 0000000000..41caad6cb3
--- /dev/null
+++ b/doc/changelog.d/3554.added.md
@@ -0,0 +1 @@
+test: adding test for start_timeout arg
\ No newline at end of file
diff --git a/tests/conftest.py b/tests/conftest.py
index 98bfe2e3e9..4742b6326c 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -663,7 +663,7 @@ def _patch_method(method):
     return "ansys.mapdl.core.mapdl_grpc.MapdlGrpc." + method
 
 
-_meth_patch_MAPDL_launch = (
+_meth_patch_MAPDL_launch = [
     # method, and its return
     (_patch_method("_connect"), _returns(True)),
     (_patch_method("_run"), _returns("")),
@@ -682,10 +682,24 @@ def _patch_method(method):
             ]
         ),
     ),
+]
+
+_meth_patch_MAPDL = _meth_patch_MAPDL_launch.copy()
+_meth_patch_MAPDL.extend(
+    [
+        # launcher methods
+        ("ansys.mapdl.core.launcher.launch_grpc", _returns(None)),
+        ("ansys.mapdl.core.launcher.check_mapdl_launch", _returns(None)),
+    ]
 )
 
+# For testing
+# Patch some of the starting procedures
 PATCH_MAPDL_START = [patch(method, ret) for method, ret in _meth_patch_MAPDL_launch]
 
+# Patch all the starting procedures so we can have a pseudo mapdl instance
+PATCH_MAPDL = [patch(method, ret) for method, ret in _meth_patch_MAPDL]
+
 
 @pytest.fixture(scope="function")
 def set_env_var(request, monkeypatch):
diff --git a/tests/test_launcher.py b/tests/test_launcher.py
index f530ba0a8c..4633a3f029 100644
--- a/tests/test_launcher.py
+++ b/tests/test_launcher.py
@@ -76,6 +76,7 @@
 from ansys.mapdl.core.misc import stack
 from conftest import (
     ON_LOCAL,
+    PATCH_MAPDL,
     PATCH_MAPDL_START,
     QUICK_LAUNCH_SWITCHES,
     TESTING_MINIMAL,
@@ -263,7 +264,6 @@ def test_license_type_dummy(mapdl):
     ):
         launch_mapdl(
             start_instance=True,
-            port=mapdl.port + 1,
             additional_switches=f" -p {dummy_license_type} " + QUICK_LAUNCH_SWITCHES,
             start_timeout=start_timeout,
             license_server_check=False,
@@ -1894,3 +1894,32 @@ def return_everything(*arg, **kwags):
             assert isinstance(kwargs["stderr"], type(subprocess.PIPE))
 
         assert kwargs["env"] == envvars
+
+
+@requires("ansys-tools-path")
+@patch(
+    "ansys.tools.path.path._get_application_path",
+    lambda *args, **kwargs: "path/to/mapdl/executable",
+)
+@patch("ansys.tools.path.path._mapdl_version_from_path", lambda *args, **kwargs: 242)
+@stack(*PATCH_MAPDL)
+@pytest.mark.parametrize(
+    "arg,value,method",
+    [
+        ("start_timeout", 88, "_timeout"),
+        ("start_timeout", 1099, "_timeout"),
+        ("cleanup_on_exit", False, "_cleanup"),
+        ("cleanup_on_exit", True, "_cleanup"),
+        ("jobname", "myjobnamestrange", "_jobname"),
+        ("jobid", 1088, "_jobid"),
+        ("finish_job_on_exit", True, "finish_job_on_exit"),
+        ("finish_job_on_exit", False, "finish_job_on_exit"),
+    ],
+)
+def test_args_pass(monkeypatch, arg, value, method):
+    monkeypatch.delenv("PYMAPDL_START_INSTANCE", False)
+
+    kwargs = {arg: value}
+    mapdl = launch_mapdl(**kwargs)
+    meth = getattr(mapdl, method)
+    assert meth == value