Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

engine floodes after cam swap

Thread Tools
 
Search this Thread
 
Old Sep 27, 2006 | 05:01 PM
  #1  
TOS98SS's Avatar
Thread Starter
On The Tree
iTrader: (2)
 
Joined: May 2005
Posts: 195
Likes: 0
Default engine floodes after cam swap

I just did my cam swap with 01 heads and it is running pig rich I will not be driving it till I tune it but I took it around the block and I noticed I lossed a bit of oil pressure . I dumped the oil and there was a lot of fuel in it .

I am sure the tune will fix this but it there anything I can do to help it I was going to bring it to eastside but I am in NY seems like a long ride to take a chance .

Oh it is an FM-13 112 and it will idle ok
Reply
Old Sep 27, 2006 | 11:28 PM
  #2  
ArcticZ28's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (14)
 
Joined: Jun 2004
Posts: 5,125
Likes: 4
From: Alexandria, VA
Default

There shouldn't be any fuel in your oil regardless of the cam you're running. You've gotta ask yourself how the fuel got mixed with the oil. There is only one way the fuel goes into the cylinders and that's through the intake ports. In order for fuel to get into the oil, there has got to be something wrong in the cylinders. You should also not lose oil pressure after a simple cam swap unless you changed the oil pump and something went awry there. Is the valvetrain pretty noisy?
Reply
Old Sep 27, 2006 | 11:40 PM
  #3  
yak's Avatar
yak
TECH Fanatic
iTrader: (15)
 
Joined: May 2004
Posts: 1,393
Likes: 3
From: SE Wisco
Default

well, **** my car did the same thing. and I have your old intake arctic.
Reply
Old Sep 27, 2006 | 11:46 PM
  #4  
ArcticZ28's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (14)
 
Joined: Jun 2004
Posts: 5,125
Likes: 4
From: Alexandria, VA
Default



Was the intake comment a separate thought unrelated to this?
Reply
Old Sep 27, 2006 | 11:52 PM
  #5  
Killer_Bluebird's Avatar
TECH Enthusiast
iTrader: (23)
 
Joined: Mar 2004
Posts: 673
Likes: 0
From: North Olmsted, OH
Default

Originally Posted by TOS98SS
I just did my cam swap with 01 heads and it is running pig rich ....
Did you swaped heads too? or just the cam? I don't see how fuel can get from the cylinder to the oil pan, unless you have a crack a ringland, or a cracked piston. But I have very limited experience. I wouldn't even know where to start except to do a compression test.
Reply
Old Sep 28, 2006 | 01:52 AM
  #6  
mvvette97's Avatar
TECH Fanatic
iTrader: (18)
 
Joined: Oct 2005
Posts: 1,766
Likes: 2
From: Leon Iowa
Default

The loss of oil pressure is because of the gas in the oil. Gas makes oil very thin. If the engine is running VERY rich depending on how long you ran it the cylinders were probably washed down with gas and that would allow gas to get in the oil. Does it have any codes like maybe the map or the coolant sensor? If one of those sensors would not be hooked up or even bad it would run rich as hell.
Reply
Old Sep 28, 2006 | 08:36 AM
  #7  
yak's Avatar
yak
TECH Fanatic
iTrader: (15)
 
Joined: May 2004
Posts: 1,393
Likes: 3
From: SE Wisco
Default

Originally Posted by ArcticZ28


Was the intake comment a separate thought unrelated to this?

my bad, I don't know what I was trying to say there. but, you very well could have washed down your cylinders and then you can have some gas slip through.
Reply
Old Sep 28, 2006 | 08:57 AM
  #8  
TOS98SS's Avatar
Thread Starter
On The Tree
iTrader: (2)
 
Joined: May 2005
Posts: 195
Likes: 0
Default

Originally Posted by mvvette97
The loss of oil pressure is because of the gas in the oil. Gas makes oil very thin. If the engine is running VERY rich depending on how long you ran it the cylinders were probably washed down with gas and that would allow gas to get in the oil. Does it have any codes like maybe the map or the coolant sensor? If one of those sensors would not be hooked up or even bad it would run rich as hell.

Yes this is the problem I let the car idle to check an exhust leak then . And when the car stalls the engine is flooded so I am sure that is how the fuel is getting in the oil . I don't have any codes just thought it wiould be running a bit leaner not pig rich you know
Reply
Old Sep 28, 2006 | 09:47 AM
  #9  
dschmittie1's Avatar
10 Second Club
iTrader: (64)
 
Joined: Aug 2005
Posts: 2,344
Likes: 2
From: York, PA
Default

an unpluged coolant temp sensor will make a car run REALLY rich just my .02cents
Reply
Old Sep 28, 2006 | 10:14 AM
  #10  
yak's Avatar
yak
TECH Fanatic
iTrader: (15)
 
Joined: May 2004
Posts: 1,393
Likes: 3
From: SE Wisco
Default

well after my cam my car was 11.0:1 at the tailpipe before a tune
Reply
Old Sep 28, 2006 | 10:23 AM
  #11  
2xLS1's Avatar
TECH Senior Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (25)
 
Joined: Nov 2001
Posts: 5,649
Likes: 9
From: Warr Acres, OK
Default

Originally Posted by yak
well after my cam my car was 11.0:1 at the tailpipe before a tune
That was probably just at WOT. I doubt it was that in closed loop.
Reply
Old Sep 28, 2006 | 10:30 AM
  #12  
yak's Avatar
yak
TECH Fanatic
iTrader: (15)
 
Joined: May 2004
Posts: 1,393
Likes: 3
From: SE Wisco
Default

Originally Posted by 2xLS1
That was probably just at WOT. I doubt it was that in closed loop.
that's true, but it made my eyes burn when it was just ideling in the garage.
Reply




All times are GMT -5. The time now is 09:17 AM.