teg_racer

first ill give you the setup

weisco ib spec rods
weisco ib spec pistons 13:1 compression
greddy timing belt
stage2 kevlar clutch
fidanza flywheel
portflow port and polish
portflow dual valvesprings and retainers
supertech valves
blox tuner hsl camshafts
aem adjusable cam gears
mugen valve cover mugen oil pan
fluidampner
aebs sleeved 85mm bore
skunk2 pro intake mani
skunk2 70mm throttlebody
apex-i intake filter
greddy evo 2 catback exhaust
hytech 4-2-1 header, greddy voltage stabalizer, greddy oil catch reservoir, spoon ground wire system,
arp rod and head bolts/studs
rc 550cc injectos paxton fpr
eagle fuel rail


now the problem
after putting the motor in i drove it a few miles without a tune, motor still ran fine, i took it to seattle, had the car tuned, made 236/160 drove it home from seattle wich is about 300 miles car ran perfect the entire way, got it home still drove it a bit then car sat for about 2 weeks, i switched the throttle body out, it was tuned on a 72mm and i installed a 70mm
tuner assured me it would not make a diff and it didnt really, but when i installed it the idle was everywhere and all through rpms it would kinda choke, so i switched the gasget around to see if it would make a diff so the solenoild on the back of the intake was blocked.(the hole from the inside the throttlebody that goes into the back of the intake mani into the solenoid) and it idled fine that way but then every time i drove it it would look like i was driving a diesel, bad black coulds of smoke and blue smoke at idle and would still studder really bad and not stay running unless my foot was on the gas.
so obviously its burning oil also.. checked the compression and its perfect 285 all across, switched that solenoid cause maybe it was bad and realigned the gasket the way its supposed to be now it feels like its missing in 1 cylinder all the time. wont stay running idle is everywhere and under load its throwing out white puffs of smoke.. what would cause this? head gasget couldnt be bad or compression would be off right?... im completely confused on what to do... ive troubleshooted alot of things, i hope its something simple to fix, it ran fine after being tuned now it seems to be getting worse and worse... whole thing has maybe 700miles total.
any suggestions would help..


Modified by teg_racer at 12:11 PM 8/26/2007

ekgcool

Check the throttle body for a small vaccum fitting. Some aftermarket throttle bodies give 2 MAP sensor hookups. If your MAP is on top check for an open little nipple on the throttle body. If you see one, plug it up and that should do it. No need to T the vaccum port into any other port, just plug it. When your looking at the throttle body, look at it as if you were the air going in. On the upper right corner is where the fitting might be. Good luck.

teg_racer

it was a bad map sensor. i went to get my motor retuned and its got a nasty rod knock so ya... project over lol