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Oil cooler lines are being a PITA....

webejpn

By webejpn
in Ask A GM Technician

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webejpn Enthusiast

webejpn

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OK, so it's a 1999 Tahoe with about 300k on the truck, maybe 200k on the motor.

It's got the 5.7

 

 

I noticed occasional drops on the driveway but recently purchased a new commuter vehicle, so the Tahoe has been sitting for a week or 2. Noticed a pretty good size oil slick under it and the oil cooler lines near the crimps appear to be the root cause. So i bought new lines from Oreillys and installed them today.

 

Old lines came off without much struggle. Put new lines on along with new clips. FIred it up and the oil was coming out pretty steady where the upper line goes into the housing by the oil filter. So i pulled the upper line, cleaned the area again, put another new clip on and reinstalled. Fired up the truck and now its a slow drip, maybe 1 every 20 seconds or so.

 

I made sure that after installing the line and hearing the "click" to give a good yank on the line to make sure it's seated properly I did not notice after the second attempt that there is a bit more play going in and out on the upper line versus the bottom. I would say maybe a 1/16" or so. My suspecion is that this is the issue.

 

The old lines were bone dry where they go into the housing, so I didn't think this would be a problem area. Do I need to replace the inlets??

webejpn Enthusiast

webejpn

Posted
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Posted

So i can purchase just those 2 fittings that mount into the adapter by the oil filter?

 

Who sells those? I don't see them on orieillys or autozone.

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