dizzybirdtrane
Member
- Joined
- April 18, 2009
- Messages
- 15
- Reaction score
- 0
- City, State
- Redding, CA
- Year, Model & Trim Level
- '94 Sport 2WD 6Cyl 4.0L
hey so I've been messing with this for awhile and I'm at a loss. I've been trying to remove my egr valve to clean it, don't want to remove the whole egr valve+egr tube assembly, which would require disconnecting the egr tube from the exhaust manifold...which, I've heard, is a REALLY big pain. these parts are definitely rusty....
the manual says it's as easy as:
1). Disconnect the EGR valve to exhaust manifold tube (9D477) from the EGR external pressure valve.
2). Remove the EGR valve retaining bolts and the EGR external pressure valve from the upper intake manifold.
(so, leave the valve attached to the intake manifold while removing the tube from it).
and then when reinstalling the EGR valve it mentions...
1). Position EGR external pressure valve, with a new EGR valve gasket, onto upper intake manifold and install retaining bolts.
2). Connect the EGR valve to exhaust manifold tube to the EGR external pressure valve. Tighten EGR valve to exhaust manifold tube nut to 34-47.5 N-m (25-35 ft-lb).
so, apparently there's a nut. here are some pics of what the valve/tube connection point looks like.
http://www.flickr.com/photos/the_mccloud/3478814065/sizes/o/in/set-72157614909858640/
http://www.flickr.com/photos/the_mccloud/3479621764/sizes/o/in/set-72157614909858640/
http://www.flickr.com/photos/the_mccloud/3481021170/sizes/l/in/set-72157614909858640/
referring to the last photo, I've been torquing what I THINK is the nut, outlined in red. Tried the little hex thing circled in green, but it won't accept any hex key size that I've seen sold out there right now...SAE or metric. SAE 7/64" is just too small and the next step up (1/8") is too big. Metric 2.5mm is too small, 3mm too big. So it appears to be either between 7/64" (2.778125mm) and 3mm, OR it's been stripped a bit and not holding the correct size.
anybody tried this on a '94 explorer and know what to do? What should I be torquing...any ideas as to how to break this thing loose?
the manual says it's as easy as:
1). Disconnect the EGR valve to exhaust manifold tube (9D477) from the EGR external pressure valve.
2). Remove the EGR valve retaining bolts and the EGR external pressure valve from the upper intake manifold.
(so, leave the valve attached to the intake manifold while removing the tube from it).
and then when reinstalling the EGR valve it mentions...
1). Position EGR external pressure valve, with a new EGR valve gasket, onto upper intake manifold and install retaining bolts.
2). Connect the EGR valve to exhaust manifold tube to the EGR external pressure valve. Tighten EGR valve to exhaust manifold tube nut to 34-47.5 N-m (25-35 ft-lb).
so, apparently there's a nut. here are some pics of what the valve/tube connection point looks like.
http://www.flickr.com/photos/the_mccloud/3478814065/sizes/o/in/set-72157614909858640/
http://www.flickr.com/photos/the_mccloud/3479621764/sizes/o/in/set-72157614909858640/
http://www.flickr.com/photos/the_mccloud/3481021170/sizes/l/in/set-72157614909858640/
referring to the last photo, I've been torquing what I THINK is the nut, outlined in red. Tried the little hex thing circled in green, but it won't accept any hex key size that I've seen sold out there right now...SAE or metric. SAE 7/64" is just too small and the next step up (1/8") is too big. Metric 2.5mm is too small, 3mm too big. So it appears to be either between 7/64" (2.778125mm) and 3mm, OR it's been stripped a bit and not holding the correct size.
anybody tried this on a '94 explorer and know what to do? What should I be torquing...any ideas as to how to break this thing loose?