I have begun to have a problem with my truck. When i stop for a stop sign or in trafffic the engine will make a different noise for a short period of time then clear up. It gets loud then perfect again. Could it be bad fuel? Should i disconnect bats to let it get a fresh start?

 

This may be a dumb question but its not the A/C clutch kicking on and off is it? What sort of noise is it?

 

mines done that since new.

 

update ; I open and closed the water drain on fuel filter and seems to have stopped the problem.I changed the filter a week ago maybe it was not closed all the way. I will check again tommorrow.