im desperate for a service manual that covers the 2.0 16v tipo (sedicivalvole), most dont cover it including porters or haynes, where can i find one, argh, engines in bits at the moment, so im desperate![8]

look on ebay mate for a fiat coupe service manual.
there are also a few fiat twin cam engine books about, maybe on ebay too

Surely it can't be that different from any other engine, what specific problems you got?