240Z, 260Z, 280Z (S30) Forums Dedicated to first generation ZCars

engine problems help

Old Nov 22, 2011 | 05:10 PM
  #1  
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engine problems help

hi there peps i just bought a 78 280z and it will start and idle great bet as soon as i give it any throtle it bogs and wants to die but then wen i let off the throttle in goes back to idleing like a dream if there is anyone that can help i would really apriciate it thank you
oh and if anyone would kno the color number for the pearls that would be awsome also trying to see if it is a pearl because it is black and the paint looks original thank you
Old Nov 22, 2011 | 05:14 PM
  #2  
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From: Wild Wild West, UTAH!
Welcome to ZDriver!

Have you checked the basics???
Timing?
Fuel pressure?
Spark?
Read the plugs?

Also, if you haven't bought a Haynes manual yet, I suggest doing so, or download the FSM here: www.xenons30.com/reference
Old Nov 22, 2011 | 05:17 PM
  #3  
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it has spark and its getting fuel the timeing is set an 10 advanced on nuimber 1 wats the gap on the plugs in the car and how do you check fuel pressure
Old Nov 22, 2011 | 08:34 PM
  #4  
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From: Wild Wild West, UTAH!
^^^ Click on that link I posted above.

Also check the sensors & connections. Mainly the AFM & coolant temp sensor (square 2prong on the thermostat housing).
Old Nov 25, 2011 | 07:11 PM
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how do you adjust the amf
Old Nov 26, 2011 | 04:43 PM
  #6  
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https://www.zdriver.com/forums/240z-280zxt-s30-s130-tech-tips-275/js-how-rebuild-your-afm-15277/
Old Dec 1, 2011 | 08:35 PM
  #7  
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so i found out some dumb *** put a 240 afm on it so i have to get that and a cold start valve because it is cracked and is giveing it an air leack and a fuel regulater and a fuel filter and it will be all fixed really apriciate all your help thank you
Old Dec 9, 2011 | 10:32 PM
  #8  
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ok so i went and bought a amf for my car and it still ran like **** then i changed the fuel filter and still runs like **** so should i check my injectors and compression and fuel psi wat should it have for compression and wat should the fuel psi be
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