I have a 88 305 TBI that runs rough under load I think I found the problem. my scanner shows 8-10" Hg at Idle and 19-22" Hg at part throttle isnt this backwards? These readings are measured at the MAP sensor I really need a vac diagram for this car can anyof you help me? Keith

 

I am sorry I dont have a response for you or anything but did I read your signature with a RX7 with a 350????? Nice one!

 

Have you hooked up a vacuum gauge to the system to verify MAP readings? You may need to increase base timing a few degrees and/or give it a good tune up.

 

Br harris I forgot to bring my vacuum gauge home from work will do that tomorrow I found a small vac leak (worn out rubber line) this feeds a signal to the heater box I think. I will have better readings on monday. Tanager yep you read it right the supercharged rotory blew an apex seal for the LAST time check out some pix here http://photos.yahoo.com/bc/rx7260z/l...8+RX-7&.view=t Keith

 

you dare cut a car up like that



hehe to each there own


but if you could I woudl like more info on the car

 

when i had a lo3 i got 22" of vaccuum at idle with a carb