i have an 89 k5 blazer tbi v8 350, on start up it idles fine (warming up or stopped at stop light or sign) but when i take off it starts to bog down and start to die. it does this for about 15 min until it completely warms up. but it still idles good. i also get alot of extra exhaust fumes ive noticed it smells alot stronger and it also puffs out one cloud of white/blue smoke on start up only. could this be a bad egr valve? ive read online about the symptoms and it sounds like thats what it is (stuck open) any help would be good, thanks. it also is alot louder then normal when you give it gas to get up to speed has like a clicking noise,

 

Cogged cat?
Any check engine lights?

 

the service engine light was on so i checked it with a paper clip and it gave code 32 which was egr circuit. so i figured it was the egr valve.