After rebuilding a blow head gasket I decided to upgrade an install LCE headers..

PITA on the passenger side. Now that I finally have everything tightened down I'm following the instructions provided but I have two extra hoses. One coming from the bottom of the EGR Vacuum modulator, and the other coming from the passenger side of the vehicle. These would normally connect to the EGR valve which the instructions say to remove.

Should these two hoses be plugged? Should I install just the top portion of the EGR valve and connect them there? Wouldn't that just be sucking in air?

Anyone who has done this before please help.

Thanks!

 

It looks like the hose coming from the passenger side actually would have connected to the pair reed valve.

 

Well I just finished my build, I'm going to plug them and keep moving, we will see how she runs.

 

If you have strict emissions tests, you won't pass without the hoses connected.

Did you remove the EGR and PAIR valves? If so then search around for the EGR delete threads and you'll find out what you need or don't need (which is basically none of it). However you won't ever pass smog like that.

 

Since you said headers plural I'm going to assume you're working on a v6. I purchased one of the first street header kits sold from LCE. It's been awhile but I'm pretty sure that all my hoses were hooked back up. And for sure my EGR is still installed and operational. There are a bunch of pics in the link in my sig.

 

I'm in Virginia and there is no smog related tests unless you live in the city which I do not now, nor plan on ever doing.

These were the LCE headers for 3vze with the crossover. They do NOT have the connections that yours have on them and the instructions advise to get rid of those parts.

Either way I'm having other issues right now, probably going to put up a new post but basically starting up pretty good, blowing smoke doesn't seem to be blue but smells like fuel. Then after a few minutes spark plugs foul out and it dies. compression seems to be above 140 on all. Not really sure where to go from there. Also seems to be some fuel smell when draining the oil, coolant levels seem OK.

 

Fuel smoke is black, coolant is white and sweet, oil is white, not sweet.


Headers alone should not cause any of those issues.


However, if you have any poor connections or leaks that is letting outside air into your engine, the O2 sensor downstream will sense it and make it very, very rich. I'd check that one our first. You can use a long piece of hosing as a "stethoscope" and follow the entire exhaust system to the O2. Also feel the air with your hands, an exhaust leak will be puffing out air.