bey

Ok... i took my car to the track last weekend. It was one hot and sticky day and I was running some shitty times.. my motor is a greddy turbo d16 and I boosted it to 14psi on the track that day for one pass and after that pass the car has been acting kinda weird.. When the motor is cold the car starts and runs fine but after an hour of driving it, it starts sounding and shakeing like it running on 3 cylinder. It only sounds like its running on 3 cylinder when i start up the car while the motor is hot. It also sounds like its running on 3 cylinders only between 700rpm to 2500rpm. Pass 2500rpm and the car start driving normal again.. .. the motor stops shakeing and it doesn't sound like its on 3 cylinder anymore..... does anyone know whats going on with my it.... i'm thinking its the spark plugs but I took them out and they look normal....

*93 civic ex
*95 z6 motor (60,000miles)
*greddy turbo & intercooler
*greddy turbo timer
*greddy fmu
*msd 6a ignition
*msd spark plug wires
*msd distributor cap
*msd blaster coil 3
*zex turbo/nos spark plugs
*b&m short shifter
*b&m fuel pressure regulator &gauge
*thermal turbo exhaust system
*pwr aluminum radiator
*red fal fan
*str fuel fail
*missing link map bypass valve
*blitz blow-off valve
*field boxer sfc vtec controller
*auto meter gauges (air/fuel, oil press., boost)
*act heavy duty pressure plate clutch
*apexi avc-r boost controller

dorotu

got the same problem. 93 del sol 1.6 si. what have you found out?

bey

found out nothing so far .. but.. it makes a lot of white smoke when it sounds and feels like its running on 3 cylinders.. don't know if the white smoke is from unburned gas, oil or coolent... help!!

93CivicSI

White smoke ='s water in oil - check your head gasket

I Shot 50 Cent

What condition is your head gasket in? Any noticable leaks?

14psi on a stock block is pretty dangerous as far as the engine goes. I wouldnt be surprised if somethin took some damage, hopefully not though, keep us updated as i am curious to see what the problem was. Good Luck man.

ABK

compression test it, sounds like a blown headgasket.

bey

a blown head gasket... damm. i hope not... i just replace the stock one with a Cometic HP Style head gasket that is .057 inch thick.. also replace the timming belt.. water pump, and a bunch of gaskets... ****.. . guess i'll go do a compression test...

dogfood

too much boost=blown head gasket