The Postman

iTrader: (44)

I just installed a LS6 intake about 1 week ago and lately i've been smelling burning oil when i stop at a light and sit and then take off....so tonight when i got back from the meet I popped the hood and took a closer look, on top of the intake around a few of the injectors there is a oil residue, but there is no leaks all the way around the intake.......my question is, if it were the injector o-rings that were leaking why would there be oil on top of the motor and not fuel, car runs fine, has good pressure and everything.....im just worried about the oil on TOP of the intake and how it got there....any suggestions

88blackgt

not sure but it could be a pcv issue. check your pcv system and see if it is venting anywhere

RedWS6 00

When you installed the LS6 intake did you change the coolant lines under the intake. The Ls6 intake is deeper than the LS1 so requires the collant pipes to be changed. If you didn't this would either crack the intake when you torque it down or it would have a vacuum leak around the intake ports.

I do end up with oil in my intake even with a new PCV valve and a catch can. But have never smelt an oily smell from it.

The Postman

iTrader: (44)

yes I did swap out the coolant lines and the PCV system is hooked up and not leaking, it only has residue around certain injectors..idk what the deal is, its not enough to be concerned about but I still would like to know where the residue is coming from.

3rdgentug

iTrader: (23)

id say clean the area really well and see what happens, sometimes doing work @ the motor oily hands and other stuff can get spilled and it can smell whem burning off gettin hot

Soul TKR

iTrader: (4)

hmmm... ya know, I had to pull my fuel rails a few weeks back when I had to swap my pushrods... I've noticed a whistling noise and a smal amount of oil sprayed on the underside of my hood... I wonder if that would be an injector o-ring issue?

RedRallyeZ

iTrader: (20)

right now ive got the same problem as the o.p. i havent done the ls6 swap yet, but i found that my prblem was a ripped pcv line that runs behind the intake. made the smell at drive thrus pretty bad. thats my only suggestion. that line is pretty hard to see, so check it

1meantransam

iTrader: (8)

i didn't change my coolant lines and no problems yet, about 3 months ago. rough driven daily

The Postman

iTrader: (44)

well the residue isn't getting worse and now all I smell is gas cuz of the LT's without a tune....still haven't tracked down the problem yet..nothing is ripped, or unplugged, or loose....idk guys...im thinking the old o-rings on the injectors are dried up and not sealing well.