Hard to start cold

[Leanback]

Does anyone know what is wrong when you first start the car and it takes a while to start! this has happen every since i replace a injector and ever since the car has starting problem but one a while it would start up find in the cold.
Then when it finally start up, it sound like a Lawnmower but clear out after a while. when it is hot, it starts up find don't know what is wrong. anyone have a idea?:repost::dunno:

[shepherd79]

check for vacuum leak somewhere.
make sure you tighten all the screws and make sure your temp sensor wires are not broken on the connector.