I just bought a 1996 talon tsi with a 1g 6 bolt swap....its bored .40 over 9.0 compression forged pistons/rods titanium valvesprings 272 cams 650 cc injectors...walbro 255ph fuel pump. 50 trim turbo kit...big intercooler ect. I had to drive it home 600 miles and when I first drove it it seemed ok (the motor suposedly only had 1000 miles on rebuild. about 100 miles into the trip it started cutting out, but I had no tools so I just babied it home as best i could. the air fuel ratio was 18 plus at idle, but all the other guages read normal. when I got it home I pulled the coil packs (I think) off the VC and there was oil filling spark plug hole #1. I thought maybe a plug was loose and oil leaked in so I changed the plugs and it seemed to run like it did when I first drove it...I let it idle for 10 minutes and it seemed ok minus the air fuel at 18. I took it down the road and after a couple miles i decided to see what it would do in boost..I took it to full boost 23 psi without coming near redline in 3rd and 4rth, but at about 5800 rpm in fourth in cut out again..so I brought it back home to find that oil covered the motor and was in where my plugs were on the VC...also on the way back the turbo would only boost 10 psi opposed to still boosting full on the trip home from where I bought it. it seemed to smoke after shifts before (if I shifted after boosting) but now it smokes a little constantly. when I pulled the plugs #2 plug was covered in oil the others looked ok. I dont know what to do because I paid almost 10 grand for the car...does this sound like rings, or anytihng expensive...The guy I bought it off said the motor would hold up to a gt35r upgrade with bigger injectors so I just need some help understanding what to do or test from here. any help would be GREATLY appreciated. Thanks...Savage

I just tried to start it and it wont start now either....it was running on 3 cylinders after the last cut out in boost and its getting spark and fuel in all four cylinders...it puts every couple turns but it does not want to start. also when it puts blue smoke comes out the exhaust and from somewhere under the hood near the intake manifold. I did use new plugs again today as well. i hope you guys can help me cause i have never had a turbo car before this one and I dont know what different things go wrong

your burning oil. sound like you done some major damage to the engine.....

I did not really push the car that hard...redline is set at 7800, but buscher racing who built it said it should be fine for 9000 rpm and 650 whp. The cutting out started just up top and then gradually just cut out more and more now I have 3 cylinders and it wont start... I just figured something major but whats the worst thing it could be? what do you think I actually did???

if anyone wants more details I do have yahoo IM cjsavage90 I just dont know what to do because the car was on the dyno on wednesday at buscher and showed 322 whp on a mustang/heartbreaker dyno and it pulled strong through the rpms untill like 7500. I just dont understand because I did not push the car like they did at the dyno and I dont know what to test for next to figure out what kind of $ im going to have to spend to get it the way it was

if your air fuel reading read 18 and its correct... Im supprised your engine isn't a smoldering piece of crap. Even with those really nice built internals you should only push 13-14 TOPS on the a/f. 14.7 is considered stoich. Lean is bad.

yea sounds like put a hole in one piston running that lean... to much boost on 18 a/f i would get the head off and check it out... that would explain not starting because your losing compression.

man you need to get your money back from that guy if thats the case. He can't sell you a car running @ 18 on the A/F scale and tell you its ok.

on another note, running 1000 miles on an fresh engine without a proper brake in is a no no

pushing a lot of boost on a fresh engine is a no no.

i bet you even keep it in the same rpm when driving back home another no no

do a compression check. the rings may be fried

I actually was very careful to run different rpms all the time because I have heard you dont run a new motor at the same rpm for a long time...the thing that gets me is that the problem started out gradualy and only higher in the rpms and just kept getting worse.the air fuel ratio was at 18 at idle but if you floored it it would move to 10 or 11, but the way I was driving was just to get home so it moved to about 14-16 on hills. and whenever it would cut out the air fuel gauge would say leaner. like if I was at 4000 rpm and I put the pedal half way down air fuel goes to say 13 and when the engine would start cutting out it would bounce to 17. I'm pretty sure I am not going to get any money back so I really need to get the internals checked some how...thanks for the relplies too guys. if It did burn a hole in the piston...how much am I looking at to get a new one put in??? (assuming the other 3 are ok)

Yeah thats all not how its susposed to look.

you want 14.7 at idle

you want 12.5 - at a static speed (Cruise)

and 11.2 - 11.5 at WOT

Keep in mind with the exception of the WOT reading the others will oscillate a little because the ECU gets its reading from the NB 02 and compensates lean then rich then lean then rich then lean then rich.

Is it possible that I had a clogged injector and by running so long I messed it up cause that one was running lean??? I mean I bought in friday and it was on the dyno wednesday at buscher and was running perfectly. he had run it low on gas though...it was empty when I got there so maybe there was some shit in one of the injectors...does anyone know of someone near me that works on these??? I live 30 min from ludlow vt (okemo mountain)???lol...bad place to have this kinda stuff go wrong

its possible you had a "clogged" injector. Running a 50 trim turbo (idk what size injectors) it would be easy to run lean if one of you injectors got a little dirty and didn't flow properly. I highly doubt this is the case tho.

If you did burn a hole in a piston you're gonna have to tear your whole block apart. Sorry :'(