HELLO, I JUST GOT THE Z A WEEK AGO , CHECKING EVERYTHING THE PROBLEM THE GUY THAT SOLD IT TO ME HAPPENED, WHEN THE CAR START GETTING WARM, IT START I DONT KNOW, MISSFIRING, NO POWER AT ALL, 1ST, CLUTCH, 2ND, NOTHING CLUTCH, 3RD NITHING, 4TH NOTING, I HAD TO STOP THE CAR LET IT COOL FOR A LITTLE, AND THE IT STARTS LIKE NOTHING, THEN A COUPLE OF MINUTES AFTER, EVERY THING START AGAIN, .. ALSO THE IDLE RPM ARE REALLY HIGH, 1500RPM, I TRYED TO LOWER IT TO STANDARD ABOUT 800PRM, HOWEVER, WHE THE ENGINE START, AND THE MISSFIRING HAPPEND THE ENGINE AT THAT LOW RPM SHUTOFF., AND THEN ALL OVER AGAIN,. ALSO I CHECKED THE MAF UNIT, I TOY WITH THE TROTLE AND TRY TO PEEK IN THE MAF UNIT , AND I SEE SOME ACTION I DONT UNDERSTAND,. THE FEELING I GET WHEN I'M DRIVING IND THE "MISSFIRE" HAPPEND IS AS YOU PUTTING YOUR HAND TO COVER THE MAF , JUST LIKE THAT WITH A EXHAUST ACTIVITY. HOPE THIS GIVE A CLEAR SPECIFICATION OF MY PROBLEM, HOPE YOU GUYS CAN HELP ME..THANKS 1976 280Z 4SPEED NO MODIFICATION 1976 280z 1990 300zx 2004 350z FairLady z (I'll get it back!!):pirate: