when is the best time to unplug the egr valve cold or hot?

 

best time is now. Doesnt matter when just now. When you get it deleted then there wont be any egr valve to unplug

 

i have a billet block off for it but just haven't had time to put it in yet

 

When the engine is stone cold...the colder the better. If the engine is warm, there's a chance that the valve will be open when you unplug it.

 

ok so should I plug it back in since i did it when it was warm?

 

That's what I'd do...plug it back in; then one morning after the truck has been sitting all night, reach in there and unhook it. I wouldn't worry about the blocker plate, the EGR valve works better. Besides, as long as the EGR cooler is still exposed to the exhaust you have a chance of getting exhaust forced into the intake...not sure how a blocker plate would stop that. There are several ways to take the EGR cooler out of the equation...some take it out with either a/m kits or homemade kits...others just block it off on both ends and leave it in place. I'm still on the fence on this and haven't figured out what I'm going to do with mine. Guess I'm waiting for it to fail; at which point my hand will be forced to do something.

 

I assume when you say you have a "billet block off" that you have a solid piece that fits down in the EGR hole with two O ring groves and bolts to the top of the intake manifold. If you have just a blank off plate for the top of the EGR opening, you are wasting your time and filling your intake manifold with a lot of exhaust gas and very little intake air. Also, your turbo will produce little to no power.

With your truck being an 04 I assume you probably have the early build 6.0. If you do, then you have the round EGR cooler. Last December I removed my oil cooler and re-built it. At the same time, I removed the EGR cooler and pressed a 1.375" engine block freeze plug in the EGR cooler exhaust inlet end. That will stop all exhaust flow through the EGR cooler for less the $1.

DSMMH

 

i have the billet block off that is a solid piece that fits in the place of the egr, this summer its all getting deleted but till then im gonna have the billet piece in (hopefully it will be put in this wknd or next depending on the temps)

 

That's what I'm looking at doing...just have to find time to tear down the top of the engine to do it. I've just never seen what size freeze plugs guys were using. One version of this plan has two plugs...one on each end so that IF the EGR starts to leak...the coolant can't get out.

 

Where did you buy this plug?

 

When I removed the EGR cooler I measured the opening with a vernier caliper and it was slightly under 1.375". So I went to Advance Auto and they had a 1.375" freeze plug. When I tried to fit it initially it would not go. I took a rotary wire brush and cleaned the opening down to bare metal. Set the cooler on the floor, put the plug in, put a piece of wood on the plug and hit the wood with a hammer. The plug started so I took the hammer and drove it in the opening. Mine was a very good tight fit.

I would only put a plug in the EGR cooler exhaust gas inlet. There was not a standard plug to fit the smaller outlet hole. With the EGR valve unplugged, no exhaust pressure or flow to the EGR valve and boost pressure keeping the EGR valve shut, you should not have another EGR problem. If your EGR cooler is not leaking coolant prior to installing the freeze plug, then it should not leak again unless the coolant system pressure cap, for wahtever reason, does not work and overpressurizes the coolant system. Eliminating the EGR cooler exhaust gas flow significantly reduces the chances of any future EGR cooler failure.

DSMMH

 

Advance Auto

DSMMH

 

i bought mine from dfuser, pure diesel has it but dfuser was the same price with shipping it looks like a good product you just have to purchase the o-rings seperately ford has them cheaper