Need tuning help. Which is right?

[Turbo6Smackdown]

Ok. Got two conflicting stories from my car. The car's running rich because I just know it. I can smell the fuel, and I can see the shit spattered all over my garage floor from the exhaust. Yet my BLMs are like 140. It's pig rich yet it thinks it's lean so it's trying to add fuel? How? Also, when I add fuel from the translator, my blm's don't go down. Why? How can that be? Is that translator fake lol? Does it really not change anything even though the numbers change? Is it like a placebo effect, tricking us into thinking it's different? Lol. I'm lost. I always thought that when your car was super rich, your blm's should be like 115 or something...

 

[Chuck Leeper]

The smell can be there due to no cat.
The "shit' on the floor is water by product of combustion.
Your sig says a WB is in there. What's it reading?
Does the TT chip idle in open loop?

 

[Turbo6Smackdown]

No. That smell and crap being ejected from my car is brand new. It NEVER did that before. I never teared up while sitting in my car due to noxious fumes lol. Ever. And my wideband is worthless. It jumps constantly, and soo fast that reading it is just an exercise in futility. Wanna know what my wideband reading is? 14.8 11.2 13.2 10.9 13.6 14.5 15.9 16.3 13.2 14.3 10.9 etc. etc. lol.

And yes, I think it runs in open loop. It's the typical turbo tweak chip setting.

 

[87-WE2]

Check for vacuum leaks (bad hoses, cracked hoses, cracked hard lines, back vac block gasket, etc.) This will cause your BLM's to read high.
Also check for leaks in the intake piping AFTER the MAF.

If you have unmetered air entering the combustion chamber, your O2's will be low (or your A/F high) which would cause the computer to react to this lean condition by.....adding more fuel.

I would bet that if you get that BLM down to 128-132, you'll have your issue solved.

 

[Turbo6Smackdown]

Well it's not my intake tube, and all my hoses are fresh, but I will look for more vac leaks... ( hate lookin for leaks) Thanks.

 

[Turbo6Smackdown]

Wait. If I have unmetered air getting in, wouldn't my car run lean then? She's pig rich.

 

[87-WE2]

It would be PERCEIVED as lean by the computer because the o2's would read low, so it'd dump more fuel in it. Is it running rough? To narrow it down, you can plug all the ports on the vac block to eliminate (or confirm) the possibility of a leaking vac hose.

 

[Turbo6Smackdown]

It runs ok actually. I will do more checking

I know I should know this actually, but I didn't get a lot of sleep last night... If it's gettin more air in it than it's supposed to, and it's adding more fuel in to compensate, then I should be fine then, right? lol.

 

[mikestertwo]

Does it run rich when the motor is first started from a cold start or when the motor is fully up to temp or both?

 

[Turbo6Smackdown]

All day. Of course I get to smell it when I get back in the garage. Hard to smell when cruising.

 

[Turbo6Smackdown]

Ok, got my wideband to settle down. At about 17 psi she was steadying at about 11.3. BLM's started to come down

 

[delcowizzid]

cylinders missfiring makes o2 sensors show lean as your measuring leftover O2 in the exhaust no burn heaps of o2 and heaps of fuel the ecu sees lean and adds fuel gives you high blm's and unneeded fuel even to the point of worsening rich missfires.every time your wideband jumps rich lean its probably just measure a pocket of air

 

[Phoneguy]

Check you fuel pressure at idle. See if there is fuel in the vac hose...

Bryan

 

[Chuck Leeper]

Ok, got my wideband to settle down. At about 17 psi she was steadying at about 11.3. BLM's started to come down

So, what was the issue?

 

[Turbo6Smackdown]

I like the misfire thing. It doesn't idle nice like it did before. The engine kind wiggles a little bit. How do I check for intermittent misfires? Would a real scan tool see misfires on an obd1 vehicle?

 

[Turbo6Smackdown]

Will check for fuel in the vac line too. I threw on a 237 regulator a few weeks ago. I'm at about 41 psi line off at idle.