GolfGTIforum.co.uk
Model specific boards => Golf mk2 => Topic started by: Brighouse-gti on 09 April 2015, 21:46
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Some of you may have guessed from my recent post that I've had my engine out. I've put another bottom end as the old one was rattling and knocking, would have needed reboring and measuring up ect ect so jacked it off. The replacement block AGG, had covered 90k so just bedding in. So anyways, after getting everything back together all wired, plumbed in, started her up and fired first time, ran for a few seconds and stalled. Did this 2-3 times and then she ran, but, problems, shes slightly poppin at the rear, which I'm guessing may be the exhaust manifold not sealing properly ??? If you rev her up then let her drop back to idle, she almost cuts out! Revs drop right down but doesn't quite cut out, then stabilises back at normal idle ??? But the biggest worry I have... I checked the timing to be sure to be sure, turning by hand, and realised I hadn't taken the plugs out, but she still turned!! I'm thinking this is really bad as this shouldn't happen. Is it possible that the head gasket hasn't sealed properly? I followed procedure with torque-ing head bolts to correct spec, and the head was flat tested ect, and both surfaces were degreased and thoroughly cleaned before bolting up. I'm stumped! There must be a leak somewhere, just wanting to hear some suggestions before I cant rule out that it must be the head gasket and having to fork out on another gasket and bolts! Annoying!!
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How easy did the engine turn? did it have some resistance on compression?
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Yeah she had some compression, but my thinking is that when you leave the plugs in it should be very difficult to turn over by hand!?!
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Difficult but will still turn. Could also be due to something like the valves not seating properly if it is too easy, if you're worried about the head gasket do a compression test which should show you if it's sealed properly.
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When the head was off I re-seated all the valves and gave them a good clean, and all the valves, springs, buckets went back in their original spots. I think I may have just found the problem and am popin to work to sort it out, BUT before I think that this will cure it, any more suggestions to throw at me to check over are more than welcome. A compression test will be on the cards when I've finished pottering today, and if it is what I'm going to tinker with now, I will fill you in later and feel like such a fool !!!
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Its official I'm a fool!
http://www.golfgtiforum.co.uk/index.php?topic=118225.0
!!!
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Did you fit a rubber gasket over collared studs? I bought new bolts for mine as I fitted the agg rocker as I liked the look of it. Can't fit it on though with studs so just replaced with bolts.
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I did!! Thing is tho, because the head and pretty much everything was plugged back in, I took the rocker gasket to work and drilled out the metal rings instead of waiting for studs in the post, and more to the point, instead if trying to get the old studs out. Worked a treat! All sealed up now and purring like a kitten, barr the slight popping from the exhaust.
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my old golf was popping slightly from exhaust after I had re-lapped the valves but stopped doing it after a couple of miles :smiley: