Blocking Off EGR Valve-Emissions?

Benesesso · 03-05-2006, 02:10 AM

Finally got around to determining why my 1990 Turbo Supra was using (not leaking) about a quart of coolant a day (~50 miles). A coolant test for exhaust gases in the radiator was negative. But I *knew* it had to be a BHG--at only 70,000 miles.

Pulled off all the stuff required to get the spark plugs out. Hmmm, no.6 plug looked different from the others. Shined a flashlight down the hole and whadda you know--looked like a lake in there.

So, it has taken me all day to get the intake side off. That EGR valve at the rear of the manifold is a real stinker to remove. I plan on making a small flat plate out of stainless steel and just blocking the port off.

Has anyone done this and then had the emissions tested? I *think* the EGR is supposed to reduce NOx at idle. The car just passed its emissions test with flying colors, but I'd like to know what to expect w/o EGR.

03-05-2006, 02:10 AM	#1
Benesesso 3" Exhaust Join Date: Nov 2005 Location: Phoenix, AZ Posts: 145	Blocking Off EGR Valve-Emissions? Finally got around to determining why my 1990 Turbo Supra was using (not leaking) about a quart of coolant a day (~50 miles). A coolant test for exhaust gases in the radiator was negative. But I knew it had to be a BHG--at only 70,000 miles. Pulled off all the stuff required to get the spark plugs out. Hmmm, no.6 plug looked different from the others. Shined a flashlight down the hole and whadda you know--looked like a lake in there. So, it has taken me all day to get the intake side off. That EGR valve at the rear of the manifold is a real stinker to remove. I plan on making a small flat plate out of stainless steel and just blocking the port off. Has anyone done this and then had the emissions tested? I think the EGR is supposed to reduce NOx at idle. The car just passed its emissions test with flying colors, but I'd like to know what to expect w/o EGR. __________________ "You see, wire telegraph is like a very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? Radio operates the same way: You send signals here, they receive them there. The only difference is there is no cat." A. Einstein 1988 and 1990 Turbo Supras