Blowing smoke on down shift
Thread Starter
TECH Enthusiast
iTrader: (1)
Joined: Apr 2009
Posts: 567
Likes: 6
From: Wellington, FL
Blowing smoke on down shift I seem to be burning oil on a long hard down shift. I suspect an oil build up in the intake. I am upgrading to a fast 102mm/96 combo in a few weeks. What souls I look for and what can I do to prevent. ( catch can for sure)
thanks
Patrick
thanks
Patrick
Thread Starter
TECH Enthusiast
iTrader: (1)
Joined: Apr 2009
Posts: 567
Likes: 6
From: Wellington, FL
thanks guys,
The heads are new, 10K miles on them now but it has been doing this since the total build. I have also noticed that i loose a quart every 2.5K miles.
The heads are new, 10K miles on them now but it has been doing this since the total build. I have also noticed that i loose a quart every 2.5K miles.
Smoke Yes , downshift causes oil to be pulled into the cylinder through the valve stems . Smoke under acceleration is oil pulled past rings .
However , when I was useing 5-30 oil the engine would pull oil into the intake through the PCV . There is a fix on this site to change the PCV valve location . It seemed rather involved though .
I changed to 10-30 and do 1.5 quarts every 3,000.
However , when I was useing 5-30 oil the engine would pull oil into the intake through the PCV . There is a fix on this site to change the PCV valve location . It seemed rather involved though .
I changed to 10-30 and do 1.5 quarts every 3,000.
Trending Topics
TECH Addict
Joined: Mar 2009
Posts: 2,099
Likes: 3
From: Texas/Afghanistan
i had a couple valve seals push up on me, i was burning oil like i was trying to get high off the ****. now i'm back to the normal puff puff that the ls1's let out. but thats because i haven't upgraded to a ls6 style pcv yet. catch can helped though.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
TECH Apprentice
Joined: May 2004
Posts: 318
Likes: 14
From: Chicago, IL
I thought catch cans only stopped oil from going back into the Intake Manifold by cooling/condensing oil vapors and having filters to catch them. So, wouldn't you still lose the same amount, but just not burn as much? .... or were you talking about it helping from blowing smoke?
TECH Addict
Joined: Mar 2009
Posts: 2,099
Likes: 3
From: Texas/Afghanistan
I thought catch cans only stopped oil from going back into the Intake Manifold by cooling/condensing oil vapors and having filters to catch them. So, wouldn't you still lose the same amount, but just not burn as much? .... or were you talking about it helping from blowing smoke?
and OP.. you and I have ALMOST the same cam. I blow smoke to.. espically at a stop light. I have read that stock rockers are only meant to handle .550" lift... The rockers are causing a slight wear, and the oil is seeping past it out the exhaust
I too have a catch can to
