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General => The garage => Topic started by: Andy Mc on 09 May 2005, 21:56
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My mate swapped my head and cams at the weekend and now she wont start.
When fitting the cams (standard cams, bought 2nd hand off e-bay, the seller said they we're 1.8 16v vw cams) my mate lined up the 2 marks on the cams but the cam pulley mark does not line up with the head..? You can turn the engine freely by hand with no resistance.
When turning the engine by key tonight she would nealry start but not fire (she also sounds very rattly). There is plenty of spark on the plugs.
Does anybody know what is wrong here....?
Are the cams the correct ones (they did have vw/audi marked on them)..?
Have I been sold the correct cam pulley...?
Any answers will be greatly appreciated..!
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wot are you saying?
the cams are alined correct but the timing mark on the cam pulley then isnt lining up with the timing mark on the rockercover?
i think everything should lineup.
re check you cam timing...esp if its rattling!!!! :shocked:
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Yes, basically......
My mate seems to think that perhaps I've been sold the wrong cam pulley as the marks wont line up, is this possible..?
Sorry I can't be more specific, my knowledge is very limited.
P.S. My mate is a trained Honda mechanic and spends every day of the week working on cars so he's a bit confussed as to why the mark on the pulley wont line up to that on the head.
I hope this makes sense.
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hmmm...could be the cam pulley
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get the cam pulley part num and get it checked against somebody elses
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Thanks for the responses....
After re-reading the haynes manual tonight, we first lined up the 2 dots on the cam, then adjusted the cam pulley to line up the relevent notches against the head, so it appears that the pulley is correct.
We now have a problem where by the cams dont want to move when fastened down in the head, some sort of hydrolic lock...? Anyway, with fading light and temperatures, we've decided to call it a nite, hopefully we'll get the cams moving tomorrow and the engine running again.
Annyone know what could be causing the cams to lock...? If you release them, you can push the lifters and they all move freely..?
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you dont have to do the cam retainers up that tight check the torque setting in a haynes manual or something but i know they can seize the cam if done to tight or worse break the studs in the head....
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Are the cam bearing caps on the right way round?
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No they we're not....! I had a read through the haynes manual today and on the inlet cam the caps we're the wrong way round, now I've altered them, and she fired up tonight, but there was excessive noise coming from the top end...I'm going to start a new post on this....
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have your valves hit the pistons dude to the timing being out?!?!?!? :cry:
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have your valves hit the pistons dude to the timing being out?!?!?!? :cry:
i6 valves at vw prices you had better hope not :shock:
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I don't think so as my mate was able to turn the engine over by hand 9 to 10 times with no resistance. If it was to hit a piston it would either lock or have lots of resistance. Also, we took the plugs out and turned it over and she turned sweet as a nut when doing this, no unusual noises....
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Sounds like it might just be the tappets havent filled up with oil properly yet, it does take a while for them to build up enough oil pressure if the engine hasn't been run for a long time/been messed with/they're new.
Has it got a genuine oil filter on it, as they have a non-return valve which helps retain oil pressure to the tappets after the engine is switched off.
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Today I swapped my head for one off the engine I bought off my mechanic and this head made the same noise..!
I rev'd the engine aswell as leaving it til the fan kicked in but the noise wont disappear.
She ticks over and rev's fine so the timing is correct. There is plenty of oil being pumped up round the cams aswell.
What do I do next..? Do I go for a short drive or stick in some engine flush and change to oil..?
I really don't know what is wrong and both my heads have made this horrible rattling..?
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are u shure the rattle is from the head (i know its a silly question)
when the current valver lump i got in the cab was put in it took a while for the head to stop tapping the first time we fired her up (about 20-30 mins)
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Yep it's definitly top end noise, you can hear it when turning it over on just the starter motor (taking the leads out).
I spoke to my other mechanic today who is a vw specialist, and he said to fire her up and keep the revs at 2,500 to 3,000 and the noise should eventually disappear.
He said that it can take upto 20 minutes for the noise to disappear so Sportline_velly, your last post sounds about right.
I'll give this a try a bit later this evening, once the rush hor traffic has died down so I can take her for a run round the block if nessercary.
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Ok, this is really bizarre.
I went out this evening, turned her over and she started (and remained) as quite as a mouse.
I've now just done a flush and oil change, and hopefully she'll remain nice and quite.
Thanks for all the responses guys..!
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Sounds good :grin:
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result :smiley: :smiley: :smiley: