What have you/ are you spinning your 5.3s too??

So, i've been having issues with blowing the dipstick out at WOT in tow haul mode. My tune is setup to go to 66-6700 in tow haul and 6200ish in regular mode. Thing is, in tow haul at WOT the dipstick pops out. Normal driving is no problem, even WOT without tow haul just shifting at 6200ish is no problem. Seems like every time im WOT in tow haul it happens. Wow that was alot of repeating.

Anyways... i've checked the PCV, and the vacuum lines from the valve covers and all are clear and in working order. Also, the truck doesn't smoke while driving. It does smoke for the first couple of puffs out the exhaust once its hot though. For example, I get home from my 20 mile trip from work turn the truck off. 10 minutes later i run to the store for some gas/tabacco it might hesitate to start, then puff a little cloud of smoke, nothing huge just noticeable. I also have a walbro which i think is causing my hesitant start up.


Thanks guys

 

sounds like your building pressure in the crankcase.

do you run a catch can?

 

No catch can...

 

id say run a catch can w/ a breather

 

Your motors blown alex.

 

A catch can would do nothing to help the blow by. You need todo a compression check if that is good then you need todo a leak down test

 

x2

Stew had the same problem on his old LS1.

 

I'm afraid my first 6.0 was doing the EXACT same thing, and ended up having zero compression on a bunch of cylinders.. compression check immediately

 

Im going to the track for some times tomorrow regardless of my issues. If it pops, oh well on to the next.

I will try to get a compression check done sometime this following week. FML I guess the saying really is true. Gotta pay to play