SoCalJack Posted September 2, 2009 Share Posted September 2, 2009 I just bought a 72 240Z. I was driving it to school today, driving normally keeping with traffic. Then a huge loss of power. It felt like half of the cylinders cut out. So I pulled off the road, and sat pondering for a bit. I started it and it ran just fine. About 10 minutes later did the same thing. I pulled off the road let it sit for about 2 minutes, then started right up and ran fine. Stock from what I know, has stock SU carbs Im not really sure whats going on. Someone said it might be vapor lock, but Ive read a couple of posts and stuff about it, and it doesnt sound like what my problem. Any suggestions? Quote Link to comment Share on other sites More sharing options...
MONGO510 Posted September 2, 2009 Share Posted September 2, 2009 Check fuel filter, may be plugged. Check all Main wiring connectors under the dash on pass. side. Unplug them, inspect, reconnect them. Sounds like a wire is loosing connection due to high resistance. I always fill connectors with anti oxidizing paste before reassembly. Get it anywhere home wiring supplies are sold. Good Luck! Mongo Quote Link to comment Share on other sites More sharing options...
Administrators RTz Posted September 3, 2009 Administrators Share Posted September 3, 2009 Check fuel filter, may be plugged. Filter was my first thought Quote Link to comment Share on other sites More sharing options...
SoCalJack Posted September 3, 2009 Author Share Posted September 3, 2009 Thank you guys. Today I dont have school or work, so its going to be all about the Z. Thank you again Quote Link to comment Share on other sites More sharing options...
woldson Posted September 4, 2009 Share Posted September 4, 2009 Ignition module may be going. Warms up then starts to poop. Fuel should "catch up" at idle for a bit, without shut down. Pump, may be a bit more indicative. Quote Link to comment Share on other sites More sharing options...
batou Posted September 4, 2009 Share Posted September 4, 2009 While you check the fuel filter, make sure there is not a bunch of crap in the fuel tank. Quote Link to comment Share on other sites More sharing options...
SoCalJack Posted September 6, 2009 Author Share Posted September 6, 2009 Yeah Im pretty sure it was the fuel filter. Its not the stock style, its a smaller in line one. I changed it, and the problem was alleviated for a while, then it started acting up again. I checked the fuel filter and it was dirty again. It had only been a day and a half and about 30 miles..... Definitely going to be cleaning the tank, and getting a better filter. Thank you again for your help. As always, it is much appreciated. Quote Link to comment Share on other sites More sharing options...
capt_furious Posted September 11, 2009 Share Posted September 11, 2009 I've had all manner of screwy fuel pressure issues for the last year or so, putting an inline FP gauge in before the carbs and after the pump really helped diagnose things. Make sure to check your fuel pump out, as well. Quote Link to comment Share on other sites More sharing options...
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