My blazer began to start hard over the summer and I didn't think much of it, now overnight (sometimes a few hours) you have to cycle the key a few time for it to start, I already replaced the fuel pressure regulator but it has not gotten better , am i over looking something or are the injectors staying open?

 

check that your furl pressure holds at i believe 60psi think it needs to be at 55psi to start
there is a section in here that explains it, could be fuel pump leaky intake, also how old are your plugs and wires?

 

I 2nd Canuck Blazers fuel pressure suggestion..put a fuel pressure gauge on it to either verify or discount this possible issue....you don't want to just throw parts on it-unless you have bottomless pockets..Jerry

 

https://blazerforum.com/forum/2nd-ge...eakdown-88305/

 

Wires are a little over a year and plugs are at several years(3-4), i dont keep up on maintaining it that good

 

sounds like my toy right after I built her - weak fuel pump and the check valve was bad in the fuel pump - but while saying that untell you do the quote above from Captain Hook and post all results it's kinnda like shooting in the dark and having no bullets