What does this port feed in the exhaust manifold?
05-14-05, 03:33 PM
#1
Constant threat
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What does this port feed in the exhaust manifold?
I have been referring back and forth to the Rotary Aviation video and one thing they show during the tear down is that the exhaust gaskets are to be positioned so that the holes are to the rear of the engine. Now on mine, the rear gasket had the hole to the rear, the front had the hole to the front. Upon inspection I see that the only one that matters is the rear, as that port feeds that strange little tube-thing in the exhaust manifold. Question: What does that port and tube do?
05-15-05, 12:30 PM
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Getting Out
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If I am looking at my shop manual correct it is labeled as EGR Switch (California Only) and it looks like a hose that comes off the EGR. It is on page F-125 of the 1993 Workshop Manual. I got the manual from Mazdatrix.com.
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05-15-05, 01:24 PM
#8
wants some ube
Originally Posted by hattrick47
If I am looking at my shop manual correct it is labeled as EGR Switch (California Only) and it looks like a hose that comes off the EGR. It is on page F-125 of the 1993 Workshop Manual. I got the manual from Mazdatrix.com.
05-15-05, 02:09 PM
#9
Originally Posted by IamRobbyah
Holy beJesus! I've been meaning to get a service manual soon, but for $111.54 + shipping???? Why so expensive?? Are there any cheaper manuals out there, or is this THE ONE to get? Sorry Baja, not trying to jack your thread, just one of those things I noticed .
07-13-05, 10:37 AM
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I have a question about this port also. I have a large amount of oil coming from my exhaust manifold when I try to turn the motor over and it seems to be coming out of this hole. Can anyone tell me why oil would be coming out of this? I really have no clue how this could happen unless I have a major internal crack in a housing or something. I thought that since I recently converted my turbos to non-seq that I probably put them back together wrong, but there is no evidence at all on the turbos of any kind of oil leakage, so its not coming from that side of the exhaust. I also have my oil injectors plugged and I premix, so the oil isn't coming from there either. Is there any explanation for this other than a bad internal seal?
07-13-05, 01:13 PM
#15
TRINGLS
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Originally Posted by TheCrazyAZN
Well, than a better question is for the people who have diabled thier EGR, do I need to have that hole opened with the gasket or can it be covered?
Originally Posted by NukeGenius
I have a question about this port also. I have a large amount of oil coming from my exhaust manifold when I try to turn the motor over and it seems to be coming out of this hole. Can anyone tell me why oil would be coming out of this? I really have no clue how this could happen unless I have a major internal crack in a housing or something. I thought that since I recently converted my turbos to non-seq that I probably put them back together wrong, but there is no evidence at all on the turbos of any kind of oil leakage, so its not coming from that side of the exhaust. I also have my oil injectors plugged and I premix, so the oil isn't coming from there either. Is there any explanation for this other than a bad internal seal?
~Kris
07-13-05, 03:09 PM
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No oil at all inthe intake tract. That is why I dont think it is from the turbos. Also, on the exhaust side there is nothing really discernable to be oil. When I removed the manifold itself, there was oil residue all around that little hole under the ports.
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