TomB Posted August 3, 2004 Share Posted August 3, 2004 Are there any special proceedures I need to adopt if I take the head off my 1.4k with mechanical tappets, or is it just follow the Haynes manual? If I want to replacee the (probable) old plastic dowels wioth steel ones, do the dowels just pull out with pliers & some pulling? Any thing else I need to know? It asctually doenst seem too bad looking at teh Haynes manual Link to comment Share on other sites More sharing options...
Jason Plato Posted August 3, 2004 Share Posted August 3, 2004 the procedure is the same yes you can get the vernier locking tool and the head bolt socket from halfords the plastic dowls will just slip out . Check the protruding height of the new dowels when installed in the block vs the depth of the hole in your head Link to comment Share on other sites More sharing options...
TomB Posted August 3, 2004 Author Share Posted August 3, 2004 Well I might not be doing it now. I have just spoken to the garage (independent Lotus specialist) & he says the gas test of coolant is negative, compression test are all < 165, so it would appear no leaks - so nothing conclusive re head gasket failure. One weird thing seemss to happen though. When the engine is very hot & it is revved hard, its appears to drop onto 3 cylinders for a no more than 30 seconds before coming back to normal. He suggested at this point, pressure could be leaving the cylinder & entering the coolant, but again, it only conjecture as the diagnostic tools didnt pick anything up. It could be a plug problem. He cleaned the plugs & checked the HT lead & dizzi, but they were all fine. He suggested getting better plugs such as twin spark performance types. I think its a see how it goes, enjoy the rest of the summer & maybe do it in the winter. Penny for your thoughts? Link to comment Share on other sites More sharing options...
Peter Duce Posted August 3, 2004 Share Posted August 3, 2004 Where there any other symptoms that made you think it was a HG failure. (Did you get any unsual filling of the expansion tank for instance?) Peter Link to comment Share on other sites More sharing options...
PaulD Posted August 3, 2004 Share Posted August 3, 2004 Have you checked the injectors? I had a missfire that was happening when the engine was fully hot - turned out to be a blocked injector. Paul Link to comment Share on other sites More sharing options...
TomB Posted August 3, 2004 Author Share Posted August 3, 2004 Suppose I should have started the thread here Oops, all the same, what do you think? How d'you clean an injector? Edited by - TomB on 3 Aug 2004 17:46:32 Link to comment Share on other sites More sharing options...
LancasterBob Posted August 3, 2004 Share Posted August 3, 2004 Ultrasonically, and its unlikely that you'll be doing the cleaning. Rob Edited by - LancasterBob on 3 Aug 2004 19:36:25 Link to comment Share on other sites More sharing options...
Englishmaninwales Posted August 3, 2004 Share Posted August 3, 2004 Tom My steel replacement dowels were very slightly oversize, and required turning down to size with emery paper. Check protruding height as mentioned above. Malcolm Link to comment Share on other sites More sharing options...
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