Here's a head scratcher!!! !!!
03-21-2011, 07:51 AM
#1
Launching!
Thread Starter
Join Date: Nov 2005
Location: birmngham, al
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
Here's a head scratcher!!! !!! rebuilt ls1, 243 heads, cam, headers. 5k miles on build. Everything has been perfect until now. Im getting blue smoke out of my exhaust, but only when braking harder than normal. Nothing on accel, nothing at idle, nothing upon cranking, only when coming to a quick stop. I can take it out of gear so that im coasting with engine close to idle and make a quick stop, and it start puffing alot of blue smoke. any ideas
03-21-2011, 11:26 AM
#6
Launching!
iTrader: (22)
Join Date: Apr 2008
Location: lewistown, PA
Posts: 291
Likes: 0
Received 0 Likes
on
0 Posts
wonder if you have excessive oil in the intake from the pcv and only on quick stops it moves forward enough to drip down into the runners and create the smoke? Look in your throttle body and see if there is signs of oil in the intake.
Trending Topics
03-21-2011, 11:30 AM
#8
agreed... Maybe somehow the oil is sloshing forward in the heads and getting into the pcv sys when nosediving under hard braking. Just a thought but try unhooking the pcv hoses from tb and int and capping the tb and int off for a quick run and let the pcv sys vent to atmosphere to see if smoke clears, If still doing it then atleast you will have eliminated one scenario from the puzzle. Post back and let us know.
03-21-2011, 08:12 PM
#11
03-22-2011, 01:36 AM
#13
12 Second Club
Join Date: Mar 2005
Location: Corpus Christi
Posts: 1,498
Likes: 0
Received 0 Likes
on
0 Posts
your head scratcher is in the brake booster. it's leaking!!! prabably? hows your brake fluid level? remove the tube from the booster and see if there is any oil.....
03-22-2011, 07:43 AM
#14
Launching!
Thread Starter
Join Date: Nov 2005
Location: birmngham, al
Posts: 214
Likes: 0
Received 0 Likes
on
0 Posts
ok, here's an undate. changed the oil yesterday evening. theres some metal shavings but not an extreme amount. just enough to cover the end of the drain plug. this is the second oil change since the build so maybe its still shavings from being new. idk. i did the build. using the stock ls1 valve covers. i disconnected one of the pcv hoses from the throttle body and plugged it up. that cured about 90% of the smoking issue. still may be some oil in the intake from before. if this keeps acting weird, im going to pull the oil pan just to inspect. OR i'll end up buying a 6.0. muahahahaha
03-22-2011, 06:29 PM
#15
ok, here's an undate. changed the oil yesterday evening. theres some metal shavings but not an extreme amount. just enough to cover the end of the drain plug. this is the second oil change since the build so maybe its still shavings from being new. idk. i did the build. using the stock ls1 valve covers. i disconnected one of the pcv hoses from the throttle body and plugged it up. that cured about 90% of the smoking issue. still may be some oil in the intake from before. if this keeps acting weird, im going to pull the oil pan just to inspect. OR i'll end up buying a 6.0. muahahahaha
