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Getting the gunk out

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  #1  
Old 06-12-2008, 05:27 AM
st07trent's Avatar
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Join Date: May 2008
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Default Getting the gunk out

I've heard that you can replace a couple of quarts of oil with transmission fluid during an oil change to get the gunk out of the engine.

I have a 99 Z34 with the 3800. It has 112,000 miles on it. Looking down the oil fill, I can see that there is gunk build up inside the engine.

Does anyone have any more suggestions about how to get rid of the sludge buildup inside the engine?


 
  #2  
Old 06-12-2008, 05:47 PM
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Default RE: Getting the gunk out

Seafoam is good stuff for it....
 
  #3  
Old 06-12-2008, 07:26 PM
Join Date: Feb 2008
Location: Warren, Michigan
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Default RE: Getting the gunk out

Welcome Trent to the MCF. You can get Seafoam at your local Autozone. Oh Yeh , how bout some pictures, we love pictures.
 
  #4  
Old 06-14-2008, 07:18 AM
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Default RE: Getting the gunk out

Seafoam. I'll check it out and post some results. I'll also try to get some pictures posted. Thanks.
 
  #5  
Old 06-15-2008, 08:58 PM
Join Date: Mar 2008
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Default RE: Getting the gunk out

Trent, if you have gunk either the oil is bad or yo have an intake leaking. I would vote the intake leaking. I have 145,000 on my '99 Z34 w/the 3800 and changed upper/lower intake gaskets at 142,000. Check to see if you have white/yellow foam or severe condensation on the bottom of your oil fill cap after the car is warm. If you do, you have an intake leak.
 
  #6  
Old 06-15-2008, 09:39 PM
Join Date: Dec 2007
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Default RE: Getting the gunk out

Wouldn't a leak chew-up enough coolant after awhile to cause you to "Notice' that thehre is coolant disappearing ... or, ... is the leak not at all that severe?
 
  #7  
Old 06-17-2008, 08:12 PM
Join Date: Mar 2008
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Default RE: Getting the gunk out

Well it wouldn't chew it up as much at the beginning. I didn't even know I had lost any coolant until I saw it seeping from my intake. That is a good point though. I would bet that he has a seeping or leaking intake though.
 
  #8  
Old 06-18-2008, 12:28 AM
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Default RE: Getting the gunk out

can't post
 
  #9  
Old 06-18-2008, 04:31 PM
Join Date: Dec 2007
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Default RE: Getting the gunk out

You should stop-in at an AutoZone. They rent tools for free. Get a Cooling System Pressure Checker and see if the system holds pressure of bleeds-by releasing some of the pressure beyond the gaskets and seals.

If you do have that problem of the pressure not holding ... you need to investigate where its going. Some Models had an Intake Gasket that was attacked by the DexCool Stock Coolant and had the Intake Gaskets dissolve and leak.
 
  #10  
Old 06-18-2008, 05:50 PM
Join Date: Mar 2008
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Default RE: Getting the gunk out

ORIGINAL: RickCoMatic

You should stop-in at an AutoZone. They rent tools for free. Get a Cooling System Pressure Checker and see if the system holds pressure of bleeds-by releasing some of the pressure beyond the gaskets and seals.

If you do have that problem of the pressure not holding ... you need to investigate where its going. Some Models had an Intake Gasket that was attacked by the DexCool Stock Coolant and had the Intake Gaskets dissolve and leak.
The '99 Z34's are included in the dexcool settlement. I didn't get any money from it because of the mileage. Yeah DexCool is used in these cars. lol
 


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