kpbrogdon
New Member
- Joined
- Aug 23, 2009
- Messages
- 21
- Reaction score
- 0
- Points
- 0
- Location
- Chugiak, AK
- Vehicle Year
- 1984
- Make / Model
- Ford
- Engine Size
- 171 (2.8)
- Transmission
- Automatic
If I had the option, I would just do the Duraspark conversion, get a little 4 barrel and be done with it but unfortunately we have IM testing in Anchorage and the best I could do is get a seasonal pass . . . it passes all of the visual and functional but fails at the tailpipe.
I have an 84 B2 and I 'rebuilt' the 2.8 over the Summer (hone job, new rings, valve grind and other head fixes, etc). I have everything back together and running but it won't pass IM and I'm not sure what more I can do.
I rebuilt the 2150 and I'm pretty confident that the carb should be in good shape (the rebuild went well, no surprises, very simple carb) - it initially ran like crap but I replaced the 02 sensor which helped a lot . . . but not enough.
I have the timing set at 10 btdc (with the spout disconnected) and have the idle mixture screws out about 2 full turns.
I also replaced the stock coil with one from MSD - new plugs, wires, cap, rotor, stock distributor (seems fine).
I did a compression check just to make sure that everything was sound internally and all cylinders where between 170 and 180.
Does anyone have any suggestions, hints, stories on how they got theirs to pass, ?? - anything that might lead me to a solution to getting a feedback carb/TFI setup to pass emissions? The smog jockey thinks it's a timing issue but there really isn't too much I can do there since the mighty 1984 computer is controlling that . . . I was thinking of maybe getting an MSD ignition box to see if that would help it burn cleaner but I'd rather not toss a couple (more) hundred dollars at a problem if it isn't going to work.
Thanks for anything - Kirk
I have an 84 B2 and I 'rebuilt' the 2.8 over the Summer (hone job, new rings, valve grind and other head fixes, etc). I have everything back together and running but it won't pass IM and I'm not sure what more I can do.
I rebuilt the 2150 and I'm pretty confident that the carb should be in good shape (the rebuild went well, no surprises, very simple carb) - it initially ran like crap but I replaced the 02 sensor which helped a lot . . . but not enough.
I have the timing set at 10 btdc (with the spout disconnected) and have the idle mixture screws out about 2 full turns.
I also replaced the stock coil with one from MSD - new plugs, wires, cap, rotor, stock distributor (seems fine).
I did a compression check just to make sure that everything was sound internally and all cylinders where between 170 and 180.
Does anyone have any suggestions, hints, stories on how they got theirs to pass, ?? - anything that might lead me to a solution to getting a feedback carb/TFI setup to pass emissions? The smog jockey thinks it's a timing issue but there really isn't too much I can do there since the mighty 1984 computer is controlling that . . . I was thinking of maybe getting an MSD ignition box to see if that would help it burn cleaner but I'd rather not toss a couple (more) hundred dollars at a problem if it isn't going to work.
Thanks for anything - Kirk