Question about blue smoke. (With Pic) - Team Camaro Tech
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post #1 of 3 (permalink) Old Oct 9th, 03, 09:20 PM Thread Starter
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Location: Home, PA USA
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Question

I admit right off the bat that I don't drive my car enough and I didn't get to drive it much this summer because I've been doing alot of maintenance on it. One of the things I did was removed the breather tube from the front of manifold and plugged it. I don't know if it's a coincidents or what but now it started blowing blue smoke out the exaust pipes, My oil pressure is lower than it's ever been, warmed up at 1k rpm idle oil pressure is 20 psi when accel it goes up to 60 psi at around 4k it's near 70 psi (I've always run Pennz 20-50 race oil in it).

Another problem is my plugs have oil or gas (I smelled them and it smelled like gas) on them and have fouled out. I cleaned them up and my car fired right back up running sounding very strong but still smoking then after I drove it a little while the blue smoke all but went away. Then I start it again and I get more but then it starts to go away again. I'm thinking this could be a 2 part problem because I think my prime valve has dryed out on my 650 dp df Holley carb because it's really running rich burning my eyes at idle (even though I only rebuilt carb about 2 yrs ago.. My engine is a 1970-1/2 350 LT-1 11:1 high dome pistons. I bought it short block from GM in 1981. It only has about 15,000 miles on it.

Here's a pic of the pcv changes I made I read in the search area under Engine that the breather should be in the front part of valve cover could this be a big part of my problem? The yellow circle is where the pcv valve is at the red is the new breather cap and blue is of course where I removed the brthr/tube. If I have to put the b/tube in front do I drill out the v/cover or is it a knock out from inside?



[ 10-10-2003, 10:03 PM: Message edited by: RamJam ]

1967 Camaro coupe Deluxe interior LT-1 350 w/ 4spd. M-21 trans and 12 bolt rear.


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post #2 of 3 (permalink) Old Oct 10th, 03, 01:45 AM
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the breather/pcv looks ok to me.
try a new pcv valve first,if that doesn't help suspect the valve seals.at 15,000 miles unless you race it hard i would have a hard time believing it was the guides.if it has been assembled since '81 i'd suspect the seals

86 camaro,383,topline vortecs,scat crank,wiseco forged 9.5:1,6"scat rods,comp xs282s,performer rpm,750 proform vac sec,msd in cap, hooker coated 1 5/8"headers,3"flowmaster,700r4,2800 stall,3.42 10 bolt posi,hotchkiss lca's,aje tube k member & a-arms
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post #3 of 3 (permalink) Old Oct 10th, 03, 08:00 PM Thread Starter
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Question

I started it up today and after a slight amount of smoke it cleared and now seems to be ok my oil pressure is up to 30 psi at 1k idle too. I took your advice and went out and got a new pcv valve put it on and now it seems my oil pressure jumped up a little more.

Although it fired right up and ran well and strong. I put in new A/lite spark plugs #85's. When I pulled the old ones out once again they had alot of dark colored gas on them (strong gas smell) and they were black, so from what I've known over the years that means they're running cold (am I right?) but like I said they are old too. Thanks

1967 Camaro coupe Deluxe interior LT-1 350 w/ 4spd. M-21 trans and 12 bolt rear.


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