my golf 1.8 turbo just cut out today. an whe n i try to start it now it just whirls like the starter motors broke. but ive lost some engine compression. could anyone have any ideas what it could be?

my golf 1.8 turbo just cut out today. an whe n i try to start it now it just whirls like the starter motors broke. but ive lost some engine compression. could anyone have any ideas what it could be?

You have no engine compression you say? Did u do a compression test to know this fact or how do you know?

If no compression your head gasket could be shot.

bent valve stems? if the starter motor seems broke, what method did you use to perform the compression test?

Sounds like classic timing belt failure. How many miles on your timing belt?

If this is the case, unfortunatly the cylinder head is done....and possibly a piston too.

cambelt had sheared some teeth on bottom pulley. ive rebuilt head but cant see any timin marks on bottom pulley yet ive found them on top pulley. any sugestions?

There are none on the bottom. Look at the top of the trans where it meets the engine. There is a little cutout in the case and you can see the flywheel. Rotate the crank until you see a little 0- mark. That 0- lines up with the BOTTOM of the square case cut out. DO NOT DO NOT DO NOT DO NOT DO NOT DO NOT do this with the cylinder head on the car otherwise you will bend all the new valves.

thanks to everyone for the advice. its running now. fingers crossed it stays that way

congrats on getting things running again...

can you fit a bov on mk4 golf 1.8t? if so how an is it wise to do so?:o

You already have one. It's called a turbo recirculation valve. If you let it vent to atmosphere then you will cause the turbo to lose all momentum between shifts.

i thought it would cause problems. but thanks anyway. would you recommend an induction kit an a remap