right..if you dont have experience please dont post
as some may know im having issues with smoke on the over run after a top end rebuild due to a dropped valve
when i first got it back together and running there was no smoke but i knew the fueling was bad
after about 100 miles or so im getting smoke on the over run..at first i thought turbo but then dismissed this as its only on high vacuum it happens
then thought stem seals/guides or an oil ring..but its a rebuilt head that had no issues before..and rings were fine before
i havent actually done much yet as im at a cross roads at where the probs lie and whether to just replace the engine
when i put it back together it would not idle as id fixed all the inlet leaks i had..andy tried to sort my idle over the net..think he richened it up a bit lower down to get it to idle (i have no WB on at present so he was doing what he could over the net)
BUT...the car is massively over fuelling..its been running rich a while up top(4k or above)..but seems ALOT worse since the rebuild (it last got remapped with a hole in the boost pipe i was unaware of so when it was replaced it was a mile out) plan was remap asap soon as the engine was sorted again, but my clutch cable snapped 5 mins into the mapping session two weeks ago
i then realised the extent it was over fuelling the other day when i done a compression test.. all cylinders were about 180-190psi within 5 cranks so comp seems good!!
but the plugs were blacker then ive EVER seen a set..and had so much carbon build up i was surprised it was running at all!! ive only done about 500 miles since the rebuild at which point the plugs where fine
so where my current thinking is...
the oil im using is quite thin anyway (5/40) this was just temp to flush with a new filter after a few hundred miles till i developed the smoke!
(dont get smoke till car is warm) but is running so rich at the min it splutters like fuck till its warm... thinking the oil is being diluted to fuck and the vacuum is either pulling it past the stems or the rings??
the longer i drive it..the worse the smoke gets??
long read but id like some thoughts on the matter so a good back ground is needed
think this is my prob? im reluctant to waste a mapping session while the car is smoking the way it is..but dont wanna have to buy/sort an engine if it doesnt need one