Engine sputters then sudenly redlines

[killerzombie]

the car will drive normal for the first 3 min, then...

I was starting from a stop and the car stalls (not me)

So i start the car and floor it this time as the engine sputters me into second.

Then as im switching gears the engine takes off and redlines (not on the gas anymore and clutch in) and continues to redline for 5 seconds until shutting off the engine. i pulled over checked my linkage and did a cursory look at the vacuum lines: everything checked out fine so i started it and drove home without anymore problems. this same thing has happened 2 days in a row in the same intersection driving home from work. Any ideas?

[olzed]

Whats the car? Carb's. Could be a linkage issue.

Edited January 19, 2012 by olzed

[killerzombie]

oops.. its a 260z with the round tops. and the linkage is in working order with all springs attached.

[Bonzi Lon]

Sounds like the linkage over-camed when you floored it.

Stay away from that intersection?

Bonzi Lon

[LeonV]

Sounds to me like your pedal got caught on the floormat.

[Mikes Z car]

My first 71 Z had an issue where I believe one of the butterflies in one of the carbs would stick on the side of the carb if floored (or something in the linkage). I had to be careful never to floor it. I wouldn't have known how to fix that then, not sure I know now either but the car I have now doesn't do that.

[killerzombie]

The peddal had full movement durring all of this. im going to pull arpart the carbs and check the linkage for hanging up tonight. ill let you guys know. and mark im a sucker for the shaved blinkers. nice work!

[killerzombie]

The carbs were all fine. However i did notice my spark plugs where all oil soaked... looks like rebuild time

[Bonzi Lon]

Get a new set of NGK spark plugs, adjust valves to FSM, check points, ignition, timing, tune carbs. See where that gets you.

Bonzi Lon

[Diseazd]

Re the revving.....If it's not the pedal getting stuck on the floor mats, check the brake booster line on the firewall. If the hose gets out of the bracket, it can lodge against the throttle linkage. It doesn't take much pressure to keep the linkage from returning to idle.