Think I got a misfire goin on. At idle it kinda hiccups. hard to explain and not that noticeable. I got a 441 code purge valve consistently, Just clear it with my UG. Then one night I got a 306 Misfire in Cyl 6. Cleared it and it hasn't come back. Also that code was thrown after going thru about 3 feet of mud and water. But I got this hiccup at idle and also noticed a loss in power. I'm still a rookie at the DIY game.(Gettin better, before I go broke). I don't wanna start throwing plugs and wires at it cause my Bosch plus 4s are only 8 months old and i have sti 8 mm wires( from PO) Think its the vacuum leak or I guess better question to ask is where to start.

 

So, what about codes, do you have any if so give us the fault code numbers.

 

Ya I got a P0441 and one night after goin thru alot of mud and especially after I hit about 3 feet of water right away I got a P0306

 

So the 441 won't cause you a misfire, the 306 is and you need to pull the plug and inspect it for damage as well as check both ends of the plug wires for a loose or dirty connection.
At your mileage, you may have a carboned up valve and or a flat spot on your cam.

 

Ok so i'll go pull that plug clean both ends of the wires. And hopefully thats it. If not i'll look into what's next. Just so ya know I'm at 180000 Kilometeres, not miles us Canadians are funny that way. LOL still high though. Thanks Mike