IncompetentOne Posted July 17, 2013 Share Posted July 17, 2013 1977 280z 2+2 just finished a head swap on the engine. It is open headers (unwrapped) currently and the only change I made to the new head was new springs and shims. I was letting the car idle in the driveway yesterday and it was doing fine. revved it a bit and all. The idle was as steady as can be. Then i tried to rev the car again and it bogged horribly, almost to the point of stalling. If i took my foot off the gas the idle would very slowly begin to fall. then if i stabbed the throttle again it would bog heavily then rev normally from around 3000 upward. I was thinking maybe the heat from the headers had something to do with it. I plan on wrapping them in the near future... hoping the lowered temps would make a change for the better. Quote Link to comment Share on other sites More sharing options...
skirkland1980 Posted July 18, 2013 Share Posted July 18, 2013 Do you have more info on your engine like what type of fuel system? Carb, FI, stock or aftermarket ecu? Quote Link to comment Share on other sites More sharing options...
IncompetentOne Posted July 19, 2013 Author Share Posted July 19, 2013 Sorry its the stock Efi system with a stock ecu as well Quote Link to comment Share on other sites More sharing options...
bsmuwk Posted July 21, 2013 Share Posted July 21, 2013 (edited) Engine warmed up a bit, how's your thermotime/water temp sensor ? If you let the thing cool off again, how's she run? Edited July 21, 2013 by bsmuwk Quote Link to comment Share on other sites More sharing options...
IncompetentOne Posted July 21, 2013 Author Share Posted July 21, 2013 the temp gauge recently just stop giving off readings so i am looking for an aftermarket one to replace it. she runs fine if i leave it off for a while and restart it Quote Link to comment Share on other sites More sharing options...
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