Quote:
Originally Posted by yblock57
I did not bend the L bracket. Didn't feel right as others have noted. Didn't look like that was the actual issue.
After several of y'all pointed out and I initially missed, the back side of the throttle valve was NOT moving freely. It was being stopped by the back cover plate that had a small protrusion just barely covering the edge of the TV bore, thus creating a hard stop on the valve. Pics Dominic posted earlier in this thread clearly show the TV protruding out the backside of the bore. Mine was not. Apologies on the videos. I accidentally stopped in between showing the issue.
https://youtu.be/VVfgFdubxhs
https://youtu.be/yZUT4PGkFKU
I don't have an explanation on why that back cover plate was interfering with the valve, but I went ahead and filed it down to get the clearance I needed. It only goes on one-way so no way it could've been flipped or put on backwards. Now it operates with MUCH more movement than before. I suspect this will translate into the additional articulation I need to get the linkage set correctly and have full throttle without binding.
https://youtu.be/8Rr5ZH-up_w
I'll be sure and check movement of everything when I reinstall the valve body and before the pan goes back on. If anyone has any additional thoughts or ideas on what I should look at while the pan's off, I'm all ears!
I'll be setting the TV rod using my pressure gauge when it gets to that point. I want to verify this gets me back into the ranges shown in the FOM shop manual.
This has been a great learning experience. I can't thank everyone enough who's chimed in with all the help and suggestions. Very much appreciated! I'll be sure and post my findings. |
If you look close at Dominic's picture on the right the plate is supposed to go between the first and second lands on the valve. The first land is on the outside as pictured and the plate will stop the second land from coming out as shown by the wear marks on the plate. Hopefully you didn't file too much off.
l
I should add that the plate fits between the first and second lands and limits the travel both ways. It keeps the second land from coming out and keeps the first land from going back in to far. By removing the edge of the plate it can't limit the travel as designed. Your third video shows this as the first land can go in past the plate. I would get another plate so it can limit the travel.
Bill