i got my 96 back from the shop today,they found the leak on the fuel line.another problem is while idleing when you hit the peddle hard blue smoke blows out the exhaust and it sounds like it backfires.they say it could need the timing adjusted.does this sound right or maybe something else.i didnt noticted this before because i havent had the truck very long and i tend to drive very easy.

 

Sounds like the timing needs to be bumped up a bit

 

thanks,i trust this shop,i was hoping it wasnt nothing major.