sgtazza Posted September 21, 2009 Report Share Posted September 21, 2009 Dudes and dudettes,My loop 1.4 Sport seems to have developed a smoking habit. Under hard acceleration (for a Lupo anyway) i seem to leave a nice dark grey/black cloud behind me. Not a thick cloud, but noticable in the rear view.Also it seems to cut out mid flight. i.e. cruising along an A road at ahmm.. 50mph.. in 5th Gear (as an example) the engine will simply cut out and bump start itself, which puts a massive jolt through the car and i imagine it does the gearbox no good.Im baffled as to what the issue might be. It will cut out at any speed, the above is merely a typical example. It will stall even when stationary, braking or accelerating.ALSO... when i return from a poodle in the loop, the rear bumper and boot lid are spekled with tiny black dots.Oil consumption however isnt too terrible!So any ideas peeps? Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 21, 2009 Report Share Posted September 21, 2009 oh dear! this is how mine started, first mpg went down then the black smoke appeared, a couple of weeks later the black spots started to come and within a few weeks i was filling the oil as often as i was filling the petrol! took it to the garage coz i thought it was gonna be guides and seals but mine was pistons! so £1600 later and a few weeks in the garage its nearly fixed! really hope yours isnt going the same way x Quote Link to comment Share on other sites More sharing options...
sgtazza Posted September 21, 2009 Author Report Share Posted September 21, 2009 oh dear! this is how mine started, first mpg went down then the black smoke appeared, a couple of weeks later the black spots started to come and within a few weeks i was filling the oil as often as i was filling the petrol! took it to the garage coz i thought it was gonna be guides and seals but mine was pistons! so £1600 later and a few weeks in the garage its nearly fixed! really hope yours isnt going the same way xAh poo! I hope not. Sounds it though.Funny, cos on the MOT it failed on emissions due to a faulty cat. Probably caused by oil contamination.Do you reckon it would be worth me popping the head off and taking a look at the pistons/valve train for any signs of excessive wear? What should i be specificly on the look out for?Appreciate your help. Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 21, 2009 Report Share Posted September 21, 2009 well when i took my spark plugs out they were wet wit oil. when i took my head off i could wiggle my pistons forward and backward so not good! and u can rebore them and fit oversized pistons coz its a nickle plated engine so i bought a new bottom end from vw coz this seems to be quite a common problem so didnt want to buy a second hand one then have it happen again. if ur lucky the pistons will be fine and it will be that one of the valves has sunk into the head! Quote Link to comment Share on other sites More sharing options...
sgtazza Posted September 21, 2009 Author Report Share Posted September 21, 2009 well when i took my spark plugs out they were wet wit oil. when i took my head off i could wiggle my pistons forward and backward so not good! and u can rebore them and fit oversized pistons coz its a nickle plated engine so i bought a new bottom end from vw coz this seems to be quite a common problem so didnt want to buy a second hand one then have it happen again. if ur lucky the pistons will be fine and it will be that one of the valves has sunk into the head!Advice taken, looks like I'll be getting my hands dirty!Thanks for that funkycooljem. much Appreciated. Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 21, 2009 Report Share Posted September 21, 2009 thats ok hun, any probs just give us a pm mate x Quote Link to comment Share on other sites More sharing options...
jamiea7x Posted September 21, 2009 Report Share Posted September 21, 2009 mine has the balck specks but i dont have plumes o fsmoke and oil conumption im keeping aneye on at th emoment but my car runs fine and i have no problems so fingers crossed i shud be arite,,out of curiosity what engine codes do you guys have mines an aub Quote Link to comment Share on other sites More sharing options...
Toon Posted September 21, 2009 Report Share Posted September 21, 2009 sport, black speckles crew Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 21, 2009 Report Share Posted September 21, 2009 yeah mine ran fine except the smoke and specks, just got it seen to coz it really annoyed me as i would spend hours cleaning it then it was dirty 2 mins later lol. um dunno about engine code, where will i find that, i know on the engine lol but is it on any of the paperwork coz i dont have me car bk yet! Quote Link to comment Share on other sites More sharing options...
CasperGTI Posted September 21, 2009 Report Share Posted September 21, 2009 Pistons should rock ever so slightly at TDC, so dont get mega worried if you can feel a bit.Your best way to find out whats going on is to do a drop rate check on the cylinders. Id sudgest a compression check, but that can actually give false readings if you have oil in the cylinder, as the oil seals the gap on compression.Drop rate check involves bringing the cylinders to all pistons are at the same level and then filling each cylinder with a set ammount of fluid, leaving it over a good time (1-2 days) and seing if any cylinder has dropped fluid, it it has, then you have leaking rings.Sports have a tendancy for the valve guides to go too, does it smoke when its cold on start up? Do you get piston slap when its cold too? - That could indicate worn boresJohn Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 21, 2009 Report Share Posted September 21, 2009 yeah mine moved forward and back quite a way and there was wear all on the sides of the cylinders too! i would fill it with oil to max and within 3 days it would be empty again so was defo ****ed lol but hey its gettin sorted now Quote Link to comment Share on other sites More sharing options...
jamiea7x Posted September 21, 2009 Report Share Posted September 21, 2009 min eonly seems to smoke on start up but then it goes.. but apart from that and the black specks ive not really noticed anything major it did go through a bit of oil quite quickly a whie back but since topping up a whie ago it doesnt seemed to have dropped much recently Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 21, 2009 Report Share Posted September 21, 2009 fingers crossed ur safe from the piston curse lol x Quote Link to comment Share on other sites More sharing options...
sgtazza Posted September 22, 2009 Author Report Share Posted September 22, 2009 Must say I only get the smoke under ''hard'' acceleration say 3750/4000rpm+ under load. It doesnt smoke at all other wise, not even cold.I seem to be free from piston slap, the tappets are a bit clacky cold, but the old girl makes good power and doesnt seem to have any flat spots even low down in the rpm range.It just confuses me ! I have noticed the oil blackens very quickly. Might there be a temperature issue? the guage says a constant 75/80degCMight explain the reason for its tendancy to cut out. Problem is im not 100% clued up on car engines so im pissing in the wind a bit here Quote Link to comment Share on other sites More sharing options...
CasperGTI Posted September 22, 2009 Report Share Posted September 22, 2009 Oil blackening is an indication of exhaust gasses carbonising the oil. That is common with piston rings sadly.Tappets on these engine are hydraulic and always filled with oil. Im pretty sure that they shouldnt be tappy even when cold.John Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 22, 2009 Report Share Posted September 22, 2009 tbh it sounds just as mine was before it went into the garage really hope its not though! Quote Link to comment Share on other sites More sharing options...
jamiea7x Posted September 22, 2009 Report Share Posted September 22, 2009 realisticly how long will this problem conitnnue as is.. its running fine if i keep an eye on oil levels will things detirorate?id rather not go through the hassle of engine rebuilds or engine swaps..dont really want to plus cant really afford to either.. Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 22, 2009 Report Share Posted September 22, 2009 dunno reali mine was still runnin fine but the black stuff was annoyin me! after about a month or so it got to the stage where i had to fill with oil every time i filled with petrol but i think it was happening with the previous owner tbh but he covered it up Quote Link to comment Share on other sites More sharing options...
RedVillan Posted September 26, 2009 Report Share Posted September 26, 2009 What is the mileage on these cars ?Just intrested... Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 26, 2009 Report Share Posted September 26, 2009 mines only 67,000! Quote Link to comment Share on other sites More sharing options...
RedVillan Posted September 26, 2009 Report Share Posted September 26, 2009 Thats not good.. then again my has just had the engine rebuilt 53,000 miles the third time the head has been off !! Full VW service history ! Quote Link to comment Share on other sites More sharing options...
funkycooljem Posted September 26, 2009 Report Share Posted September 26, 2009 no its not lol! still not got my car back, its doin my head in! Quote Link to comment Share on other sites More sharing options...
jamiea7x Posted September 26, 2009 Report Share Posted September 26, 2009 feckin hell mines only 41k Quote Link to comment Share on other sites More sharing options...
Defcon5 Posted September 26, 2009 Report Share Posted September 26, 2009 Pistons should rock ever so slightly at TDC, so dont get mega worried if you can feel a bit.JohnTDC = top dead centre? Quote Link to comment Share on other sites More sharing options...
CasperGTI Posted September 27, 2009 Report Share Posted September 27, 2009 correct Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.