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Old Mar 19, 2015 | 08:29 AM
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eliebarcham's Avatar
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Default loose line
Hey guys

I bought my 86 vette few months ago and have just noticed a loose blocked line on the back passenger side of the engine. The car is running fine. I am just wondering where does it go and if it should be connected?
I have attached a photo of it
Thank you
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Old Mar 19, 2015 | 09:45 AM
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Originally Posted by eliebarcham
Hey guys

I bought my 86 vette few months ago and have just noticed a loose blocked line on the back passenger side of the engine. The car is running fine. I am just wondering where does it go and if it should be connected?
I have attached a photo of it
Thank you
How many of the items in these two links are still on your car?

http://parts.nalleygmc.com/showAssem...riveLine=11463

http://parts.nalleygmc.com/showAssem...riveLine=11463

Look at maybe #'s 74 - 77 in the second image.
Last edited by WVZR-1; Mar 19, 2015 at 09:53 AM.
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Old Mar 19, 2015 | 11:24 AM
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Originally Posted by WVZR-1
How many of the items in these two links are still on your car?

http://parts.nalleygmc.com/showAssem...riveLine=11463

http://parts.nalleygmc.com/showAssem...riveLine=11463

Look at maybe #'s 74 - 77 in the second image.
The heater system has been disconnected for some reason. Would that be a clue?
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Old Mar 19, 2015 | 11:56 AM
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Originally Posted by eliebarcham
The heater system has been disconnected for some reason. Would that be a clue?
Yes maybe but step back about 2 feet and take another snapshot of each side of the engine so that everyone can see the entire side of the engine. Do left, right and maybe front.

I thought about heater also:

http://parts.nalleygmc.com/showAssem...riveLine=11463

This should be I believe '86 heater hoses etc.
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Old Mar 19, 2015 | 02:36 PM
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Originally Posted by WVZR-1
Yes maybe but step back about 2 feet and take another snapshot of each side of the engine so that everyone can see the entire side of the engine. Do left, right and maybe front.

I thought about heater also:

http://parts.nalleygmc.com/showAssem...riveLine=11463

This should be I believe '86 heater hoses etc.








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Old Mar 19, 2015 | 02:38 PM
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Originally Posted by WVZR-1
Yes maybe but step back about 2 feet and take another snapshot of each side of the engine so that everyone can see the entire side of the engine. Do left, right and maybe front.

I thought about heater also:

http://parts.nalleygmc.com/showAssem...riveLine=11463

This should be I believe '86 heater hoses etc.
It must connect to the heater piping then.
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Old Mar 19, 2015 | 06:46 PM
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I don't recall any heater lines off the back of the manifold, looks like it's behind the EGR and fuel pressure block.
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Old Mar 19, 2015 | 09:02 PM
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I am NOT an L98 guy for sure so what is the pipe/hose at :15 in this video? The video is only :48 long so it will take less than a minute of your time. I was quite sure the OP's question and comment wasn't a heater hose either but I posted the hose routing (which I believe has errors on it) for the car. He asked so I tried to help. I'm somewhat curious myself.

Is there a vacuum port that exits the bottom of the plenum on the L98? HVAC vacuum maybe?

Last edited by WVZR-1; Mar 19, 2015 at 10:44 PM.
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Old Mar 19, 2015 | 11:41 PM
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That's part of the "steam tube", which should connect to the heater piping with the heater water valve:



This is what it looks like on my car (the metal pipe is item #1 in the illustration):



This is hose #12 in the illustration:

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Old Mar 20, 2015 | 03:05 AM
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Originally Posted by Cliff Harris
That's part of the "steam tube", which should connect to the heater piping with the heater water valve:
Cliff, I was quite sure you would be around for that. Thank you
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Old Mar 20, 2015 | 03:46 AM
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Thanks a lot guys. I will need to buy and reinstall some heater piping again
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