QUESTION ABOUT TIMING

89streetbeast said:

i dont know if this applies to your problem or not, but when i had a 94 tbird 4.6 , the mass air sensor itself was dirty and was smoking with the smell of raw fuel from the exhaust. bought a can of electrical contact cleaner and cured it.

from what i've dealt with on fox 5.O's 14-17* base timing with octane spout plugged in is ideal for a stock to mild setup. should be around 10-12* with it unhooked.

since im new to the site a list of your mods would help to know what might be the problem.


mike

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HISSIN50 said:

Mike, I thought you were going to say Octane rod - that's old-timer talk.

Random thoughts to the guy who types in all caps:
Turn caps off.
If you dont have cats, even lean stoichiometry can 'smell' rich. It's part of having no catalyzation occuring.

GTO is right about the TB.

Seeing timing jump about 6-12* once you plug the SPOUT connector back in is about normal.

I'd pull codes first. Something regarding a rich mixture can often be in the form of a soft code.

And cleaning the MAS like Mike mentioned is never a bad idea.

Good luck.

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HISSIN50 said:

You're correct - from the factory they did not. Many factory SD cars are converted to MAF but I appear to have missed the boat on realizing you had a SD stang. Disregard the MAF mentionings.
Apologies and good luck.

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