Correcting blow-by after 30#injectors/programming...
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Correcting blow-by after 30#injectors/programming...
I've installed the SVO 30#'s with H/C and ofcourse without the right programming started getting blow-by and my car has been bellowing white smoke through the neighborhood and oil has puddled in the exh. tips. I have not driven it much. :cry . Now that I have the right programming, how long is it going to take for the rings to reseat while driving it around? Is there a possibility that they will not reseat? Should I not drive at WOT until they reseat? Thanks-David
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Re: Correcting blow-by after 30#injectors/programming... (MelloYellow)
I'm not losing any coolant. The oil does look kind of funky, it may of had some fuel in it. I' just changed the oil with a 40w to see if that would fix but it started bellowing white smoke again. I did notice a slight crack at the valve guide on one of these heads before I put the H/C package in. What do I need to do, a leak down test? If it's the valve guide how do I test? Thanks-David
Pro
Joined: Nov 2001
Posts: 731
Likes: 26
From: Austin TX
Re: Correcting blow-by after 30#injectors/programming... (ScreaminDemon)
No joke, you need a good mechanic. Why are you putting in 40W oil?
Also, installing 30 lb injectors has nothing to do with your rings seating. :confused: :confused:
Also, installing 30 lb injectors has nothing to do with your rings seating. :confused: :confused:
Melting Slicks
Joined: Apr 2001
Posts: 3,034
Likes: 125
From: NY-South Florida
Re: Correcting blow-by after 30#injectors/programming... (CAracer)
30# injectors at 58 psi is a ton of fuel without programming!! It doesn't take too long to damage the cylinders with that much fuel washing the walls. Don't drive it until you get it leaned out!!
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: Correcting blow-by after 30#injectors/programming... (ScreaminDemon)
It would have taken quite a bit of fuel to wash the rings out, does the oil smell like gas? White smoke = coolent usually - or a LOT of oil. Did you by accident pour some antifreeze down the headers/exhaust when you pulled the heads? It takes a long time to burn that out.
If you look at the oil filler with the cap off with the engine running does it look like its puffing smoke out?
Is this a fresh engine? Were the old heads OK?
Was the guide itself cracked or was it cracked where it was pressed in the head?
need more nfo :)
If you look at the oil filler with the cap off with the engine running does it look like its puffing smoke out?
Is this a fresh engine? Were the old heads OK?
Was the guide itself cracked or was it cracked where it was pressed in the head?
need more nfo :)
Le Mans Master
Joined: Jul 2000
Posts: 5,925
Likes: 0
From: A FEW CLICKS NORTH OF THE CANAL
Re: Correcting blow-by after 30#injectors/programming... (CAracer)
No joke, you need a good mechanic. Why are you putting in 40W oil?
Also, installing 30 lb injectors has nothing to do with your rings seating. :confused: :confused:
Also, installing 30 lb injectors has nothing to do with your rings seating. :confused: :confused:
I 2nd this
:confused: Why would you install a head that had cracked valve guides?
This is where your problems are your cracked or worn out valve guides have worn out your valve guide seals.
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Re: Correcting blow-by after 30#injectors/programming... (kp)
The oil did smell alittle like gas. The head did have a tiny fracture where the guide was pressed into it. I put about 50 miles on it without having the injectors programmed , just to get it home. No antifreeze in exhausts. I put 40w in to see if that would reseat the rings if that was the problem, since 30w is so much thinner and I'm sure by now mixed with so much gas. When everything is right I'm going to run a 50w. You can do that when you run a huge solid cam. The oil is mixing with the fuel, if it was water it would look like milk, but it's just looking thinner. What do I do next to test?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: Correcting blow-by after 30#injectors/programming... (ScreaminDemon)
You need to make sure the programming is correct and I think you need to talk to ARE. Seriously, something is very wrong. The oil will look milky if there is water in it but sometimes you wont see it until you drain the oil. If you washed out the rings or hurt the moly on them they will never seal right.
Not to be a jerk but I thought you were joking when I first read this - you really need to talk to whoever built the short block.
Le Mans Master
Joined: Jul 2000
Posts: 7,758
Likes: 0
From: Fort Worth Texas
Cruise-In II Veteran
Cruise-In III Veteran
Re: Correcting blow-by after 30#injectors/programming... (ScreaminDemon)
Where are your fuel trims at non WOT, and where are your O2 sensors at WOT? I've seen many C5's with 30# SVO injectors, including my 2000, and the PCM is able to adjust for them, at least at non-wot to 14.7:1 a/f ratio by skewing the trims way negative. If they went out of thier range to compensate you would set a code. Of course you really need to get programming, or MAFT to adjust properly for WOT.
[Modified by kewlbrz, 11:51 PM 7/28/2002]
[Modified by kewlbrz, 11:51 PM 7/28/2002]
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Re: Correcting blow-by after 30#injectors/programming... (kp)
I just drained the oil tonight and installed a new filter, and the oil feels and smells like it's mixed with alittle fuel. We only installed a solid roller H/C package with a few other bolt ons, I still have a stock bottom end, I think the rings should have a good chance of reseating if the programming is right now and the use of a thicker oil. Nevrenuf did my programming, and I do believe it is correct. I just want to know how to find out (test) for blow-by or if it's the valve guide? I have IM ARE, and I'll call them in the morning. I wonder if a fractured valve guide seat can be repaired???????? :confused:
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Re: Correcting blow-by after 30#injectors/programming... (kewlbrz)
Shawn, Tom (Nevrenuf) did say he needed to know where my trims were after he did my programming. Is it possible that this bellowing white smoke could just be that I need more programming in my fuel trims? If I Autotap it what all do I need to be looking at???? Thanks
David
David
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: Correcting blow-by after 30#injectors/programming... (ScreaminDemon)
The valve guide thing may be no big deal depending on where it is cracked. A bad valve guide will smoke and draw some oil into one cylinder if its intake and will blow some oil out the exhaust if its the exhaust guide.
It sounds like you have a little more problems then one valve guide. There are few things that can go wrong on a h/c install. If you have access to a compression or leakdown tester you could check the rings. You could also look at the plugs to see if they all look the same or if you have a couple problem cylinders.
It sounds like you have a little more problems then one valve guide. There are few things that can go wrong on a h/c install. If you have access to a compression or leakdown tester you could check the rings. You could also look at the plugs to see if they all look the same or if you have a couple problem cylinders.
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Re: Correcting blow-by after 30#injectors/programming... (kp)
Can you see from my pic how my air/pressure lines are run? I have a 3/8th's hose running from the intake to the right valve cover with a filter on the other side, and the TB tube is capped. I was told this could be pulling too much air into the cylinders and oil with it? :confused:
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: Correcting blow-by after 30#injectors/programming... (ScreaminDemon)
depends if there is a baffle under where the PCV is or not, not would be bad. Unplug the line from the intake and cap it off and see, it wont hurt to run it w/o the PCV for a few minutes. You can also see how much blowby it has then by looking how much is puffing out of the pcv hole..
BTW, you may have some problems with the way the PCV is hooked up there. The stock setup is hooked to the top of the TB so the air that is drawn into the PCV system is metered by MAF. the way you have it the air is drawn from outside and it will screw with the a/f, most likely an idle surge or minor tuning issues. Or maybe it will work OK, never tried it :)
[Modified by kp, 12:48 AM 7/29/2002]
BTW, you may have some problems with the way the PCV is hooked up there. The stock setup is hooked to the top of the TB so the air that is drawn into the PCV system is metered by MAF. the way you have it the air is drawn from outside and it will screw with the a/f, most likely an idle surge or minor tuning issues. Or maybe it will work OK, never tried it :)
[Modified by kp, 12:48 AM 7/29/2002]
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Re: Correcting blow-by after 30#injectors/programming... (kp)
The pcv has a baffle, and the hose is hooked up to the intake behind the TB. It's the same air metered by the maf. Are you saying the air tube at the TB is metered smaller than at the intake? :confused:
By the way, nice pic Kerry!
By the way, nice pic Kerry!
Melting Slicks
Joined: May 2001
Posts: 2,596
Likes: 120
From: East Tennessee
Re: Correcting blow-by after 30#injectors/programming... (ScreaminDemon)
If the air is drawn in through the breather on the valve cover it is unmetered. The line thats capped off on top of the TB is where the stock PCV system draws its air from, there are no breathers on the valve covers on a closed system. The air is pulled in through the air filter and MAF. The way it is now it acts like a giant vacuum leak. The PCV is connected to the right place. Thats not what is making it smoke though, pull that PCV hose and see if its full of oil.
2am I'm goin to bed - good luck :)
[Modified by kp, 1:18 AM 7/29/2002]
2am I'm goin to bed - good luck :)
[Modified by kp, 1:18 AM 7/29/2002]
Thread Starter
Drifting
Joined: Sep 2001
Posts: 1,421
Likes: 3
From: Memphis Tn
Re: Correcting blow-by after 30#injectors/programming... (kp)
Thanks kp, the airline does have a little oil in it, it does not puff any smoke. I'll talk more with ARE in the morning, but I was told this setup was fine...