Hugh 240z Posted December 2, 2004 Author Share #13 Posted December 2, 2004 Where you at in SD? Way down south or something?My car runs fine usually, so I don't have a problem driving it somewhere...I will try the oil stuff first. Thank you guys for trying to help! Link to comment https://www.classiczcars.com/topic/14187-problems-on-freeway-in-cold-weather-su-motor/?page=2#findComment-104011 Share on other sites More sharing options...
e_racer1999 Posted December 3, 2004 Share #14 Posted December 3, 2004 clairemont... i'm not THAT great of a 240 mechanic, but hey, i could help! i doubt it would be worth the drive for me to look at it for you though.. Link to comment https://www.classiczcars.com/topic/14187-problems-on-freeway-in-cold-weather-su-motor/?page=2#findComment-104045 Share on other sites More sharing options...
Gav240z Posted December 3, 2004 Share #15 Posted December 3, 2004 I agree with Chris and Beandip sounds like a lean condition is causing the problem especially since you get backfire from the carbs. It also makes sense that it happens when it's cold outside because as you say cold air is denser making it run leaner. Fuel filter is another cheap fix but i will put my money on it being lean causing the problem. Link to comment https://www.classiczcars.com/topic/14187-problems-on-freeway-in-cold-weather-su-motor/?page=2#findComment-104068 Share on other sites More sharing options...
sblake01 Posted December 3, 2004 Share #16 Posted December 3, 2004 No one mentioned it and it may not be as crucial on carbed cars but what thermostat are you running? Link to comment https://www.classiczcars.com/topic/14187-problems-on-freeway-in-cold-weather-su-motor/?page=2#findComment-104072 Share on other sites More sharing options...
e_racer1999 Posted December 3, 2004 Share #17 Posted December 3, 2004 ^^i was actually thinking about that last night Link to comment https://www.classiczcars.com/topic/14187-problems-on-freeway-in-cold-weather-su-motor/?page=2#findComment-104088 Share on other sites More sharing options...
Daniel Posted December 3, 2004 Share #18 Posted December 3, 2004 Good point Sblake01- I used to change 190 winter 170 summer. I found my car liked the 190 always. Good call. Link to comment https://www.classiczcars.com/topic/14187-problems-on-freeway-in-cold-weather-su-motor/?page=2#findComment-104122 Share on other sites More sharing options...
Hugh 240z Posted December 8, 2004 Author Share #19 Posted December 8, 2004 I was thinking about the thermostat as well.... I don't have any idea whats in there. It only takes a couple minutes to warm up, so I figure its not missing... but I should think about changing it out. Link to comment https://www.classiczcars.com/topic/14187-problems-on-freeway-in-cold-weather-su-motor/?page=2#findComment-104462 Share on other sites More sharing options...
Yarb
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