Josh280z Posted September 20, 2010 Share Posted September 20, 2010 I have the original engine in my '79 280zx. problem, it sometimes backfire and acts like it wants to die on me when I step on the gas... it has also died on me once, the RPMs were around the 1000s when it did this I have been told it could be timing and/or adjusting the valves. I have not opened up the engine yet, would you please give me some advice on what is going Quote Link to comment Share on other sites More sharing options...
19762802+2 Posted September 20, 2010 Share Posted September 20, 2010 Your probably running rich, Download the FSM search on here and you will find one. Also search these kind of things have been covered on the L28 many many times. Good luck. Quote Link to comment Share on other sites More sharing options...
Josh280z Posted September 22, 2010 Author Share Posted September 22, 2010 I have the FSM, looking through, but I dont have a lot of time >_> going to school full time Quote Link to comment Share on other sites More sharing options...
ktm Posted September 23, 2010 Share Posted September 23, 2010 (edited) Then sell your car and buy something more modern. We are not here to spoon feed you. Read the manual and go through the procedures outlined in the FSM for testing the ECU as well as search here and at Zcar.com and Classiczcar.com for possible causes of your problem. Edited September 23, 2010 by ktm Quote Link to comment Share on other sites More sharing options...
Robert Posted September 23, 2010 Share Posted September 23, 2010 Its not the valve clearence, but if they make noice, you should adjust them, but thats not your problem. First things first,check your timing, and then your ignition system (plugs, dis cap). If you have problems getting high rpms (3500+), the dizzy could be broken, have seen this quite a few times. Either ignition module or excessive shaft play causes misfires, and the inability to reach high RPMs. If none of the above helps you, you could try going through the FSM. The FI system generally is very reliable, but shure, sometimes they fail. but most times, the problems are the easy stuff, like a part clogged fuel filter. Quote Link to comment Share on other sites More sharing options...
Josh280z Posted September 23, 2010 Author Share Posted September 23, 2010 thank you robert, i'll check those, though I dont have problem getting to high rpms Quote Link to comment Share on other sites More sharing options...
Josh280z Posted January 23, 2011 Author Share Posted January 23, 2011 Thank you for all the help, turns out it was the timing... I'll be more careful about the topic naming in the future. Quote Link to comment Share on other sites More sharing options...
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