R34 skyline. GTS25de NEO tiptronic transmission
160,000kms pretty tidy in and out.
Problem when starting car from cold.
Took about 3 starts for car to finally start correctly.
First 2 starts the car would turn over, rev up to 2 or 2.5k rpm then instead of dropping and holding at 1,000rpm revs would drop to 0, car would stall and die.
Car would successfully start on turn 1 or 2 if the gas pedal was pressed down an inch or so,, splutter blow some smoke then start.
3rd crank car would start, blow some smoke then drop revs down to idle eventually.
When car was warm would start first pop.
Solution: was fiddling around with cables on the engine. Was told it could be TPS but doubted it as it would be a constant problem not a cold only issue.
Noticed a plug was loose ontop of the engine on the little box that the cam cover air lines plug into.. noticible if looking at a NEO engine,, under the NEO cover right next to the oil cap.
Plugged it in. started first pop in the morning, after work, and this morning.. Seems to be problem solved.