[steve25]

Reving a motor up even 8000 rpm out of gear and non loaded will not produce the combustion temps that take place when running down the road under load, so your lack of smoke in the garage test makes sence.
If its a rich running carb issue when letting off the throttle then the carb would be running rich also at other times and you would smell that, but that being said, if you rub your finger around in the end of the tail pipe is it a grayish dry black that gets on your finger, or is it a oily black on your finger?

[Brett_ty]

Originally Posted by steve25

Reving a motor up even 8000 rpm out of gear and non loaded will not produce the combustion temps that take place when running down the road under load, so your lack of smoke in the garage test makes sence.
If its a rich running carb issue when letting off the throttle then the carb would be running rich also at other times and you would smell that, but that being said, if you rub your finger around in the end of the tail pipe is it a grayish dry black that gets on your finger, or is it a oily black on your finger?

Steve

It is a grayish dry black- what does that mean?

[Brett_ty]

Team PY

-Thanks for the appreciation of my service. As I know many of you are Vets as well, I appreciate your service as well....Its a team effort spanding many decades! I have 17 years in and several deployments to Iraq, Afghanistan, and the Balkans...It's not easy work and thank goodness we have alot of outstanding young Americans making that selfless serving sacrifice througout this country's history.

Thanks for the advice and tips. Always appreciate this group's efforts to help one another out. Once I get some time this weekend I will go over them and see what I can deduce. Unfortantly, I dont have a compression/leak down tester and will have resource one from some place.


On my particular GTO, I dont have the brake booster any more. I had to take it off due to clearence issues with the heads (KRE). So I put on a Wildwood Disc brake Master Cylinder. Car is also a Manual (Tremec TKO) so I can rule out the ATF.

[surfsama]

Originally Posted by Brett_ty

Car is also a Manual (Tremec TKO) so I can rule out the ATF.

I think this statement by the OP rules-out the modulator...