1988 Supra turbo with serious issues HELP!
 

I recently purchased a mkiii 7mgte and I can't figure out what is going on. Every time the turbo kicks in (any boost at all) the car spits and spudders and floods it self out BAD. No power what-so-ever. Serious black smoke out the exhaust. I replaced the coolant temp sensor the plugs wires and 02 sensor, with no luck at all. As long as the car is not under boost is runs great. Fires right up and purrs. I'm getting really tired of cleaning all the Carbon build up off the rear end, PLEASE HELP!

i would say you might have a boost leak somewhere try checking that check your hoses for any cracks or bulging and maybe you have bad injectors or yhour amf is bad who kows but check those things out if that helps at all

check the big hose to the bottom of the turbo i blew that off and the car wouldn't go. no power and just stalled. so check that.

Thanks
 

Its was the bottom intercooler line going to the turbo. I fixed that and now a huge whitish puff of smoke gets blown out when the blow off valve releases. Any ideas? Head gasket?

how is your PCV plumbed?
got an aftermarket catch can?