So.....is this what's causing my bad mpg?? - Toyota Nation Forum : Toyota Car and Truck Forums

xtremeskier97 · 07-27-2008, 03:25 PM

cruisn76 · 07-27-2008, 03:35 PM

Is that the EGR???? I have yet to take mine out, so I don't know what it looks like. Dang that is dirty!

xtremeskier97 · 07-27-2008, 03:39 PM

Quote:

Originally Posted by cruisn76

Is that the EGR???? I have yet to take mine out, so I don't know what it looks like. Dang that is dirty!

Bingo!

cruisn76 · 07-27-2008, 03:43 PM

I'd say get a shop vac with a thin nozzle and suck that crap out. I dunno if it would damage it though

xtremeskier97 · 07-27-2008, 04:16 PM

Nah...its so caked in there a shop vac wouldnt do a thing for ya! You have to scrape it all out and use carb cleaner to get it clean.

***Zembonez*** · 07-27-2008, 04:22 PM

In answer to your actual question... No, I do not think the clogged EGR is the cause of poor fuel economy. As long as an EGR valve doesn't hang open, it will only cause the exhaust to no longer recirculate and affect emissions.

White95Cam · 07-27-2008, 04:27 PM

Quote:

Originally Posted by Zembonez

In answer to your actual question... No, I do not think the clogged EGR is the cause of poor fuel economy. As long as an EGR valve doesn't hang open, it will only cause the exhaust to no longer recirculate and affect emissions.

"Assicus Smarticus"

Too damn funny W95C

+1 on answer

***Zembonez*** · 07-27-2008, 04:39 PM

Thanks... it's just a funny name. I try not to live up to it!

Qslim · 07-27-2008, 04:45 PM

Quote:

Originally Posted by Zembonez

In answer to your actual question... No, I do not think the clogged EGR is the cause of poor fuel economy. As long as an EGR valve doesn't hang open, it will only cause the exhaust to no longer recirculate and affect emissions.

True. A clogged up EGR valve on its own is not going to affect mileage, but if the EGR system is that clogged, imagine what the rest of the engine looks like...

***Zembonez*** · 07-27-2008, 04:52 PM

Good point.

rty · 07-27-2008, 11:15 PM

Quote:

Originally Posted by Zembonez

In answer to your actual question... No, I do not think the clogged EGR is the cause of poor fuel economy. As long as an EGR valve doesn't hang open, it will only cause the exhaust to no longer recirculate and affect emissions.

Could it cause the engine to run too lean? I think a clogged EGR could screw up some cars.

Luckynumber5 · 07-28-2008, 01:51 AM

a clogged egr can hurt mileage and does richen the mixture by reducing available oxygen in the system.

JvR · 07-28-2008, 07:30 AM

The EGR air comes from the exhaust. So the air from your exhaust is dirty and clogged your egr.
That means that the combustion from the engine is not perfect (A/F mixture) ...bad sparkplug,broken sensors etc. ...or you are burning oil. (bad compression)

When floor your pedal, do you have black/blue smoke out of your exhaust? (someone must drive behind to see;-) )

I am not a mechanic, so think about the thought ;-)

Goodluck!

sorry for my bad english ;-)

xtremeskier97 · 07-28-2008, 08:05 AM

Quote:

Originally Posted by Luckynumber5

a clogged egr can hurt mileage and does richen the mixture by reducing available oxygen in the system.

EXACTLY what I was thinking!

And I will check that out JvR.

***Zembonez*** · 07-28-2008, 04:24 PM

Exhaust Gas Recirculation.

Clogging the EGR has exactly NOTHING to do with robbing your intake charge of air. It was designed to send a portion of the exhaust back through the intake to consume unburnt fuel and particles to reduce emissions. It will not richen the mixture.