Timing Belt Jumped Help

[CNCM0nkey]

Alright lads and ladies my first post here.
So changed the timing belt on my c2 1.6 vts dohc and everything seemed to be fine. Drive for about 500 miles then suddenly it started making a slight ticking noise and was rough at idle. After scrolling online it sounded like it had jumped a tooth. So I had a look last night and with No1 cylinder at TDC the exhaust cam isn't lining up with the timing hole in cylinder head block. The inlet can is fine I can get 8mm bolt in fine.
So my question is can I take the belt off turn the cam pulley to line up then refit belt?

Thanks for reading any help appreciated

Edited by CNCM0nkey on Wednesday 7th August 09:09

[CrutyRammers]

Yeah, just take it off and follow the refit procedure again. And try to see why it has moved - did you put it on wrong (probably better), or has something failed (probably worse) - the tensioner or any of the pullies.

[CNCM0nkey]

Well I didn't change the tensioner but I have done now and I can't find the elusive 6mm hole that is used to pin the flywheel to stop crank moving so possible the crankshaft moved while installing the belt. But thanks alot d for the reply. Il try again tonight panicking as the wee cars mint and don't want to kill it 😂 😂.

[CrutyRammers]

Worth painting line-up marks on the crank and cam pullies before you take the belt off so you can see if anything's obviously moved. Take it out of gear so you don't accidentally turn it by leaning on the car.

[CNCM0nkey]

OK il try this again tonight. I can't remember if I had it in gear yesterday will need to check that! Thanks alot. I've read a few times now that you definitely cannot rotate the engine in the opposite direction why is this? Im not well versed in mechanics but thought that with the belt off you would be safe to rotate the pullies independently as long as there wasn't any hard resistance?
Cheers again

[CNCM0nkey]

Update. Car is fked!! Thought I had it nailed. All marks lined back up after tensioning and cranking by hand so started it up and was visibly "bucking". Killed the engine and looked back at belt looks like its about 3 teeth off now and belt doesn't seem to be tensioned at all. Must be making a right pigs ear of putting it on. Hope the cars not dead!,
Thanks for the help and input anyway.

[slybunda]

Why didnt you turn the engine over by hand first? When i did belt job i turned engine over 20 times by hand and made sure everything lined up proper before firing it up.
Also you should not re tension a used belt. If belt has been run for more than 10 mins then it should be replaced.

If its not lining up now either belt is not put on proper or its not tensioned properly and its jumping teeth.
Not sure if the engine is a non interference design but you may still be lucky with 3 teeth out and no bent valves.
Take belt off and start again from scratch.

[CNCM0nkey]

Thanks for the reply. I did turn it over by hand and it seemed fine. Don't think I'm tensioning it right. Will need to buy another kit and try again. Only thing is the camshafts are out of time now. Looking at YouTube seems like I can find tdc then turn cam pullies back in time. Got my mate coming on Monday to give me a hand. Hopefully get this back on the road will be gutted if I've killed it.

[CNCM0nkey]

Update
Wee cars fine. Was freaking out because it was running rough. My mate checked the timing, done compression test and said it was all good. So plugged in diagnostics and apparently it's the lambda sensor that's faulty. Safe to say I'm chuffed.
Cheers for all the input