neojasper Posted August 10, 2006 Report Share Posted August 10, 2006 i have been told by a machanic that i might have blown a piston ring first they said might be a valve seal then another garage said piston ring what are the odds of a ring going i have only done 38000 miles and havent thrashed it it runs fine exept every now and then kicks some smoke out for a bout 30 secs then its fine again still pull ok style="vertical-align:middle" emoid=":confused:" border="0" alt="confused.gif" /> Quote Link to comment Share on other sites More sharing options...
Red Lup Gti Posted August 10, 2006 Report Share Posted August 10, 2006 valve stem seals? Quote Link to comment Share on other sites More sharing options...
neojasper Posted August 10, 2006 Author Report Share Posted August 10, 2006 valve stem seals?yes valve stem oil seals or rings ? which is more likely to have gone if any Quote Link to comment Share on other sites More sharing options...
Max69vk Posted August 10, 2006 Report Share Posted August 10, 2006 Get the garge to do a compression test on each cylinder! If they were any kind of decent garage they would have already done it & it would tell them straight away if the rings had gone style="vertical-align:middle" emoid=";)" border="0" alt="wink.gif" /> Quote Link to comment Share on other sites More sharing options...
Blackrat Posted August 10, 2006 Report Share Posted August 10, 2006 could be a faulty lifter thats sticking, i doubt a ring has dropped :S but you never know Quote Link to comment Share on other sites More sharing options...
Teflon Posted August 11, 2006 Report Share Posted August 11, 2006 (edited) a compression test wont tell you if the oil control rings are shot..i know this isn't recommended but if you really want to dind out if the oil rings are gone then take out one of the spark plugs and run the engine with it out. if the oil ring are buggered you'll get plumes of burnt oil coming out.it's more liekly to be a fault with the fuel injection system.yes valve stem oil seals or rings ? which is more likely to have gone if anythe valve seal are more prone to wear out than piston rings. Edited August 12, 2006 by Teflon Quote Link to comment Share on other sites More sharing options...
neojasper Posted August 11, 2006 Author Report Share Posted August 11, 2006 yes your right about the compression test not always the most reliable of tests but i think it will be an oil seal more than any thing .,,,dont know much about injecters but what are the odds of it been an injecter over an oil seal ? and may i say teflon your the man you know every thing m8 about these cars you should be know as the ORACLE style="vertical-align:middle" emoid=":o" border="0" alt="ohmy.gif" /> Quote Link to comment Share on other sites More sharing options...
Teflon Posted August 12, 2006 Report Share Posted August 12, 2006 (edited) .,,,dont know much about injecters but what are the odds of it been an injecter over an oil seal ?these engines use 'pico' type injectors which are manufactured by various makers including magnetti-marelli and webber to name a few. they are available in many different flow ratings upto about 88occ per miniute they look like this border="0" class="linked-image" /> border="0" alt="" />i cant say that i've ever had many problems with these type of injectors even in modified engines. but i have seen bosch and lucas type injectors going out of control when used at high duty cycles (if you dont know what the duty cycle is don't worry but i can explain if needed) this nomally causes the injector to overhead and stick open and consequently overfill the combustion chamber with fuel. some off which remains unburnt and exits the engine as smoke(normally blue). but as i say i've never seen a pico injector do it because they are very high quality and expensive injectors but there is a first time for everything.if your injectors do turn out to be faulty give me a shout because i've got some of these kicking around from past projects. but i will need to know the colour of the injector (note in above picture coloured plastic bit) this colour denotes the static flow rate and the spray pattern, there are hundreds of different typesmay i say teflon your the man you know every thing m8 about these cars you should be know as the ORACLE style="vertical-align:middle" emoid=":o" border="0" alt="ohmy.gif" />no not everything!!! but there is no substitute for real hands on experience, i've been playing with polo's/lupos for years now!!! but i do get things wrong still even now. Edited August 12, 2006 by Teflon Quote Link to comment Share on other sites More sharing options...
1 Litre Screamer Posted August 12, 2006 Report Share Posted August 12, 2006 If it was the piston rings you would have noticed a drop in performance and the smoking would be continues. Not to mention the clicking and ticking noise you would hear from the engine. so i would rule those out. Quote Link to comment Share on other sites More sharing options...
Pais340 Posted July 23, 2007 Report Share Posted July 23, 2007 If it was the piston rings you would have noticed a drop in performance and the smoking would be continues. Not to mention the clicking and ticking noise you would hear from the engine. so i would rule those out.Hello guys,Can you tell me is it possible to replace the stem seals without removing the Head?Tony Quote Link to comment Share on other sites More sharing options...
Blackrat Posted July 23, 2007 Report Share Posted July 23, 2007 yea but its a tricky job Quote Link to comment Share on other sites More sharing options...
IDGM Posted July 23, 2007 Report Share Posted July 23, 2007 If it was the piston rings you would have noticed a drop in performance and the smoking would be continues. Not to mention the clicking and ticking noise you would hear from the engine. so i would rule those out.Oh yes indeedee... Quote Link to comment Share on other sites More sharing options...
nathanstyles Posted November 2, 2007 Report Share Posted November 2, 2007 my piston rings have gone and my lupo smokes real bad!! and the MOT is up decemberdoes any one know how much this will cost to get donethanks Quote Link to comment Share on other sites More sharing options...
green&black Posted November 3, 2007 Report Share Posted November 3, 2007 (edited) see my problem too at: http://forums.clublupo.co.uk/index.php?showtopic=36042Same probelm, same low mileage. Mine's a 2002 1.4 sport.This lupo burning oil business seems to be a real issue. A friend suggested to me that there may be a design fault with Lupo engines that VW won't admit to. Can anyone substantiate this claim? Edited November 3, 2007 by green&black Quote Link to comment Share on other sites More sharing options...
airwolf Posted November 3, 2007 Report Share Posted November 3, 2007 see my problem too at: http://forums.clublupo.co.uk/index.php?showtopic=36042Same probelm, same low mileage. Mine's a 2002 1.4 sport.This lupo burning oil business seems to be a real issue. A friend suggested to me that there may be a design fault with Lupo engines that VW won't admit to. Can anyone substantiate this claim?ive got this problem with my lupo replaced stem seals and put it back together and it still smokes but i put 2 gaskets on and put it bk together its just burning coolant nw from i took the head off but im hoping wen i do an oil chage itl b ok Quote Link to comment Share on other sites More sharing options...
nfbr Posted November 3, 2007 Report Share Posted November 3, 2007 You took the head off without draining the coolant ? Quote Link to comment Share on other sites More sharing options...
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