emissons ?
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Senior User
Joined: Sep 2006
Posts: 125
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From: Mt. View Hawaii
emissons ?
I finished rebuilding my engine and have about 260 miles on it and before I rebuilt it I would use a diagnostic reader in school for a check up a couple times a month. After rebuilding my motor I removed all traces of emissons parts ecept the sensors. I used the diagnostic reader and I got EVP codes and the one that bothers me is it said the system was running lean. What do I do with the sensors and vacume lines? How do I fix the running lean problem? Timing is at 10 btdc and I put the copper core plugs in.
86 EFI 302
86 EFI 302
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Senior User
Joined: Sep 2006
Posts: 125
Likes: 0
From: Mt. View Hawaii
I did a full port and polish on the lower intake and opened up the ends on the upper and opened up the head a little. My dad thinks thats the problem but I thought the computer was supposed to compensate for that.
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
So you removed all the " emissions parts"? EGR? Evaporator canister? Air injection? On these early EFI motors the computer is programmed around these parts, so removing them will throw off the calibration. To fix this you need a custom chip or you need to fool the computer into thinking the emissions devices are still present.
Hotshot
Joined: Jul 2002
Posts: 14,285
Likes: 12
From: Bend,OR
check out fordfuelinjection.com for the egr resistor. the thing is a lean condition is going to be sensed from the o2 sensor. the emissions will have no affect on that so it sounds like you just need to replace that part and move on. what is your fuel pressure at the rail as well.
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