Vacuum line deletes and diagram?

[lkfldredneck]

Wondering if theres any vac line deletes i could do to get it less complicated in the engine bay. and if anyone has a vac line diagram

 

[93SierraWT]

You can delete the line coming from the back of the throttle body going to the driver's side valve cover by getting a push in breather. You can also delete the EGR lines by getting an EGR block off plate. The lines going to the charcoal canister can also be deleted and the canister can be removed.

 

[lkfldredneck]

You can delete the line coming from the back of the throttle body going to the driver's side valve cover by getting a push in breather. You can also delete the EGR lines by getting an EGR block off plate. The lines going to the charcoal canister can also be deleted and the canister can be removed.

Thanks man! ill do them when i get the engine back together. i dont think my EGR had a vac line on it..

 

[someotherguy]

You can delete the line coming from the back of the throttle body going to the driver's side valve cover by getting a push in breather. You can also delete the EGR lines by getting an EGR block off plate. The lines going to the charcoal canister can also be deleted and the canister can be removed.

That line is not coming from the back of the throttle body; it's coming from the spacer ring between the throttle body and the air cleaner. If you remove it you need to cap the nipple on the spacer or delete the spacer. Don't remove the line that is actually from the rear of the throttle body; that's for the MAP sensor.

If you delete the cannister you really should cap the hard line that fed it so that you don't have an open source of fuel vapors (or liquid fuel if you overfill the tank) under the hood. You should also without fail, run a vented fuel cap as the factory one is NOT vented, at least not in the way that will allow pressure build-up to vent to the atmosphere.

If you delete the EGR you either should custom tune to compensate or at least dial back on the base timing a little bit, unless you like spark knock.

None of these really seem like a good idea to me, to be perfectly honest; the vacuum line setup on the TBI engine is so freaking basic the idea of removing stuff to clean it up only causes other problems and doesn't really do anything useful.

Richard

 

[great white]

Those lines are on there for a purpose. Richard has explained it well enough.

Removing them for looks makes no sense to me....but it's your hack. Do as you wish.

We'll keep and eye out for your next thread:

"I removed my X now my truck runs like sh...."

 

[FastOrange]

The only one i would get rid of is the spacer ring between the throttle body and air cleaner, other then that, leave it all.

 

[93SierraWT]

I've had all of it removed for years and I've never had any problems.


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[great white]

And it begins.....

 

[FastOrange]

I've had all of it removed for years and I've never had any problems.


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What is the purpose of deleting the EGR and charcoal canister? especially on a stock truck.

 

[93SierraWT]

What is the purpose of deleting the EGR and charcoal canister? especially on a stock truck.

I removed it for a cleaner look in my engine bay. Put a vented cap on and I've never had any drawbacks.


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