85 euro s 5 speed and when i got it it proformed well, not as it should. In fact it was so bad i thought if i could not find anything wrong with it some one else would own it. After much todo i was checking timing and found the front distributor rotor was about 30 degrees away from number one cylinder. I pushed on the rotor very lightly and there was a lite snap and the rotor was spinning freely. Bet i found it, that and the non euro spider would do it. Speaking of which if anyone has a euro s spider and throttle body they would sell i sure would be thankful as mine came thru without. best to all,Ray

 

Stock 85 euro should have two distributors look for a broken belt ( 928 602 541 00 )

 

yes twin dizzy and broken belt, it also has euro s block and heads, Thanks Ray

 

You should also replace the washer's that go above the belt, the screws that hold down the rotors, and I would also replace the seal that goes on the distributor shaft

92860254000 - Thrust Washer (x2) - http://www.928gt.com/p-21666-92860254000.aspx
99921800702 - Rotor Screw (x2) - http://www.928gt.com/p-35338-screw-4-x-6.aspx
92860210300 - Shaft Seal - http://www.928gt.com/p-21653-92860210300.aspx

The washers & screws are a "one time use" part & dirt cheap.
As long as you are pulling the distributor, the rubber seal is cheap insurance against an oil leak.