Scirocco Register

guy's, I need some help/suggestions regarding timing issues with my '81 1.6 gls scirocco, I changed the timing belt, lined up the dot's tdc mark on the pulley. intermediate shaft, camshaft dot all spot on, fires up ok ticks over ok, but dies after running for about five min's, wierd thing is when I put the strobe on it the pulley notch is sitting about 25mm away from tdc,
if I move the dizzy to line up the marks it get's rough and cut's out, I've checked all the electric's, fitted a new switch unit to no avail. had the belt off several times to make sure everything is lined up, moved the intermediate shaft a notch either way,no difference, I'm stumped, it ran fine until I changed the belt, obviously i've done something but what I don't know , I've owned several MK 1 golf gti's in the past, changed timing belts on them before, no problems, any suggestions before I go nuts!

When i did mine i made a mark on the crankshaft pulley in reference to the timing mark on the flywheel. So its 18 degrees (i think thats about right) before TDC. Thats what i lined mine up with and it runs reasonably now. I think the original mark on the crankshaft pulley is for TDC, can always check using the screwdriver method.

screwdriver in no.1 cyl spark plug hole to check if pistons at the top? On mine i made a seperate mark for the timing, which was roughly an inch before TDC.

Don't know if that helps but its how i sorted mine!

Is it a carb engine? If so, check the vacuum pipes for the advance. I've been told to strobe the engine with the advance disconnected but that never worked for me. I always make sure that the timing marks are correct and then go for a run, stopping every so often to adjust the dizzy. Always worked for me.