Here is the problem on WOT, I have smoke exiting my tail pipes, had my wife follow me to verify indeed it was smoke and the color, I can not tell, and I do not dear let her drive my car under WOT conditions. Anyhow she said it was white, which would indicate a lean condition, this makes sense to me, since I had to disconnect my fuel regulator vacuum, to free up a vacuum port for my modulator valve on my TH350. I tried upping the fuel pressure, but it was way to rich at idle and part throttle. Guess I just answered my own question, but still would like some input. The engine is a highly modded 310, with less than 10,000 miles on it. As mentioned before it is a TH350 behind it. Could it be something in the heads? I think I should get me a vacuum tee hook the fuel regulator back up and go from there.

ARGH!!!

later guys
-=Nitro7=-

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86 Camaro SC, 310, Edlebrock Intake and Carb, Flowtec Headers, Ported polished heads and intake. TH350 tranny, Jacobs Electronics Ignition.

 

White smoke indicates coolant. Maybe the intake or head gaskets arent sealing properly ? I'd take out the plugs and have a look.

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92 Z28 L98 350
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Ported and polished heads, ported stock TPI base, ported plenum, Comp Cams XR270HR-10 cam (lift .495/.502 duration 218/224 lobe separation 110), Edelbrock TES headers, LT4 valve springs, Crane AFPR, Flowmaster catback with LT1 style tips, MSD coil & wires...

"Take that auto, drop it in first, hold the brakes, stomp the gas and grin from ear to ear! :-)

 

Nitro,

Removing the vacuum line from the FPR would increase fuel rail pressure, tending to enrich the mixture instead of leaning it. Vacuum to the FPR keeps the pressure lower for "normal" driving conditions but allows an increase in pressure (thus enrichment) at WOT or heavy accelleration (e.g., low vacuum).

Your problem is somewhere else, and if you are producing white smoke, Blade is correct about coolant being the most likely cause. The source could be anywhere from the throttle body being cracked to the head gaskets failing. An intake gasket failure can do the same thing. A cracked head or case casting could also cause coolant infiltration, but start with the simple steps first. A compression test and inspection of the spark plugs may indicate a particular cylinder to target for analysis.

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Later,
Vader
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"Make Me Bad"
Adobe Acrobat Reader 4.0

 

Maybe I should had mentioned I have a carbed car, anyhow besides the point just to let everyone know I found the problem and think it is fixed. My exhaust exits in front of rear tires. Anyhow upon deep inspection after pulling plugs checking coolant etc etc... I got to looking under the car. The tranny was blowing oil out from around the dip stick tube, (which is the reason why tranny was low)and my exhaust was coated in a nice film of tranny fluid all over it, cleaned the exhaust fixed the dipstick tube took it for a ride and no more smoke. Glad it was that simple also glad I found it quickly or could had lead to some major tranny damage pretty quick.

Appreciate the input both Blade and Vadar.