99 burb rough start

first start in morning it stumbles, rough start. then its fine untill it sits for a while. fuel pressuer regulater?

any comments?

Does the fuel pressure hold after shutting off the engine? The FPR is a common issue but the FRP is not easy to get on on a L31 engine.

//2000CAYukon

If it does hold you may want to check temp sensor can mess up fuel air mix when cold just a thought.

I have posted many times here on the issues with the injectors and cold start issues..do a search and you will find some detailed posts on what is going on

can you direct me to some threads on this issue? moneys tight and going to have to try to fiquire it out on my own