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04-04-2020
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#1 |
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Join Date: Mar 2020
Location: Pensacola Florida
Posts: 22
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Throttle body
Question I have a vacuum leakAt my throttlebody gasket I want to change it I’m just going to remove the bolts slip it back hair remove the gasket and slip a new one in do I need to remove coolant thanks in advance
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04-04-2020
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#2 | |
  
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Throttle body
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However, if you remove the fill cap of the overflow reservoir and drain a quart or so out of the radiator (passenger side corner), that should be enough. All that said, several of us who only drive 'em in the warm weather have plugged off the TB coolant - OR bypassed the TB (passing the hose under the plenum to the other side). P.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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04-04-2020
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#3 |
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Join Date: Mar 2020
Location: Pensacola Florida
Posts: 22
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Re: Throttle body
Thanks for your help
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04-04-2020
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#4 |
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Throttle body
No, do not drain coolant. Since the throttle body sits so high on the engine all you have to do is undo the two small lines on either side. Not much coolant, if any, will come out. Plug the lines temporarily so you don’t make a mess.
That’s a very strange place for a vacuum leak. You may very well find that was not the problem. Vacuum leaks around the throttle body are usually leakage around the throttle plates from wear or (more likely) removal of the DAG compound from around the throttle bore at the throttle plates. People think the DAG is dirt and wipe it off. If this is the case there’s a procedure for resetting the idle to compensate. H 
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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04-04-2020
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#5 |
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Join Date: Mar 2020
Location: Pensacola Florida
Posts: 22
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Re: Throttle body
Yes I thought it was the throttle shaft but a pump smoke into the engine and I’m pretty sure it’s coming right from the throttlebody gasket driver side upper right hand corner right below that bolt I’m not going to remove it right now the previous owner stripped one of the bolts so I’m gonna order some new ones before I remove it
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04-04-2020
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#6 |
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Join Date: Mar 2020
Location: Pensacola Florida
Posts: 22
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Re: Throttle body
I also have a small leak at the injector housing at the bottom there’s a small tube that runs towards the center of the engine Maybe a half inch long and plugs into something in the center of the engine I could definitely see smoke coming from the injector housing side
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04-04-2020
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#7 | |
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Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Throttle body
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H
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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04-04-2020
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#8 |
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Join Date: Mar 2020
Location: Pensacola Florida
Posts: 22
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Re: Throttle body
I have a nice little video which you can pause and step ahead and step back so it’s real nice I’ll see if I can upload it I have to get it onto my computer
Greg |
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