diff --git a/pubsub/integration_test.go b/pubsub/integration_test.go
index 39cea2beb9f..221f1e62b6c 100644
--- a/pubsub/integration_test.go
+++ b/pubsub/integration_test.go
@@ -1104,7 +1104,7 @@ func TestIntegration_CreateTopic_MessageStoragePolicy(t *testing.T) {
 
 func TestIntegration_OrderedKeys_Basic(t *testing.T) {
 	ctx := context.Background()
-	client := integrationTestClient(ctx, t)
+	client := integrationTestClient(ctx, t, option.WithEndpoint("us-west1-pubsub.googleapis.com:443"))
 	defer client.Close()
 
 	topic, err := client.CreateTopic(ctx, topicIDs.New())
@@ -1183,9 +1183,8 @@ func TestIntegration_OrderedKeys_Basic(t *testing.T) {
 }
 
 func TestIntegration_OrderedKeys_JSON(t *testing.T) {
-	t.Skip("Flaky, see https://github.com/googleapis/google-cloud-go/issues/1872")
 	ctx := context.Background()
-	client := integrationTestClient(ctx, t)
+	client := integrationTestClient(ctx, t, option.WithEndpoint("us-west1-pubsub.googleapis.com:443"))
 	defer client.Close()
 
 	topic, err := client.CreateTopic(ctx, topicIDs.New())
@@ -1278,8 +1277,8 @@ func TestIntegration_OrderedKeys_JSON(t *testing.T) {
 
 	select {
 	case <-done:
-	case <-time.After(30 * time.Second):
-		t.Fatal("timed out after 30s waiting for all messages to be received")
+	case <-time.After(60 * time.Second):
+		t.Fatal("timed out after 60s waiting for all messages to be received")
 	}
 
 	mu.Lock()
@@ -1291,9 +1290,8 @@ func TestIntegration_OrderedKeys_JSON(t *testing.T) {
 }
 
 func TestIntegration_OrderedKeys_ResumePublish(t *testing.T) {
-	t.Skip("kokoro failing in https://github.com/googleapis/google-cloud-go/issues/1850")
 	ctx := context.Background()
-	client := integrationTestClient(ctx, t)
+	client := integrationTestClient(ctx, t, option.WithEndpoint("us-west1-pubsub.googleapis.com:443"))
 	defer client.Close()
 
 	topic, err := client.CreateTopic(ctx, topicIDs.New())
@@ -1310,15 +1308,14 @@ func TestIntegration_OrderedKeys_ResumePublish(t *testing.T) {
 		t.Fatalf("topic %v should exist, but it doesn't", topic)
 	}
 
-	topic.PublishSettings.DelayThreshold = time.Second
+	topic.PublishSettings.BufferedByteLimit = 100
 	topic.EnableMessageOrdering = true
 
 	orderingKey := "some-ordering-key2"
 	// Publish a message that is too large so we'll get an error that
 	// pauses publishing for this ordering key.
 	r := topic.Publish(ctx, &Message{
-		ID:          "1",
-		Data:        bytes.Repeat([]byte("A"), 1e10),
+		Data:        bytes.Repeat([]byte("A"), 1000),
 		OrderingKey: orderingKey,
 	})
 	<-r.ready
@@ -1328,8 +1325,7 @@ func TestIntegration_OrderedKeys_ResumePublish(t *testing.T) {
 	// Publish a normal sized message now, which should fail
 	// since publishing on this ordering key is paused.
 	r = topic.Publish(ctx, &Message{
-		ID:          "2",
-		Data:        []byte("failed message"),
+		Data:        []byte("should fail"),
 		OrderingKey: orderingKey,
 	})
 	<-r.ready
@@ -1340,8 +1336,7 @@ func TestIntegration_OrderedKeys_ResumePublish(t *testing.T) {
 	// Lastly, call ResumePublish and make sure subsequent publishes succeed.
 	topic.ResumePublish(orderingKey)
 	r = topic.Publish(ctx, &Message{
-		ID:          "4",
-		Data:        []byte("normal message"),
+		Data:        []byte("should succeed"),
 		OrderingKey: orderingKey,
 	})
 	<-r.ready