diego1988 Posted October 23, 2017 Share #1 Posted October 23, 2017 Any idea why a stock 280z 1978 has a back fire problem blowing out blue smoke 1 Link to comment Share on other sites More sharing options...
Dave WM Posted October 23, 2017 Share #2 Posted October 23, 2017 fuel mix not right vacuum leaks, unmetered air, ECU, Sensors, ign timing, smoke from burning oil from warn out engine, valve guides, seals, rings, pvc issues, wrong oil. one thing at a time, start with a compression check, then check ign timing, then fuel pressure test. Need a lot more info before a meaning remote diagnosis can begin. Link to comment Share on other sites More sharing options...
Mark Maras Posted October 23, 2017 Share #3 Posted October 23, 2017 Ditto to all of the above. Some car and engine history would be helpful too.. Link to comment Share on other sites More sharing options...
siteunseen Posted October 24, 2017 Share #4 Posted October 24, 2017 Try unplugging the cold start valve? My 240 starts blowing blue when I leave the choke on too long. Link to comment Share on other sites More sharing options...
diego1988 Posted October 24, 2017 Author Share #5 Posted October 24, 2017 Thankyou, will replacing the ingine help get the car starting...won't start or stay on, when it does is back firing Sent from my SAMSUNG-SM-N910A using Classic Zcar Club mobile Link to comment Share on other sites More sharing options...
Zed Head Posted October 24, 2017 Share #6 Posted October 24, 2017 Plug wires are placed in backward rotation order in the distributor. It will run, but poorly. Link to comment Share on other sites More sharing options...
siteunseen Posted October 24, 2017 Share #7 Posted October 24, 2017 1 hour ago, diego1988 said: Thankyou, will replacing the ingine help get the car starting...won't start or stay on, when it does is back firing Sent from my SAMSUNG-SM-N910A using Classic Zcar Club mobile I'm usually the one that confuses but you got me with this? Link to comment Share on other sites More sharing options...
diego1988 Posted October 24, 2017 Author Share #8 Posted October 24, 2017 I'm thinking off doing an ingine swap with transmission....guessing this will solve all my problems Sent from my SAMSUNG-SM-N910A using Classic Zcar Club mobile Link to comment Share on other sites More sharing options...
gwri8 Posted October 24, 2017 Share #9 Posted October 24, 2017 23 minutes ago, diego1988 said: I'm thinking off doing an ingine swap with transmission....guessing this will solve all my problems Sent from my SAMSUNG-SM-N910A using Classic Zcar Club mobile Well, that would be one way........ But simply figuring out your current engine would be more economical. Just my 2 cents. Link to comment Share on other sites More sharing options...
diego1988 Posted October 24, 2017 Author Share #10 Posted October 24, 2017 Sent from my SAMSUNG-SM-N910A using Classic Zcar Club mobile Link to comment Share on other sites More sharing options...
diego1988 Posted October 24, 2017 Author Share #11 Posted October 24, 2017 I feel like the ingine is dead oil going into the spark plugs and the distributor is Gone. I have almost no mechanic skill Sent from my SAMSUNG-SM-N910A using Classic Zcar Club mobile Link to comment Share on other sites More sharing options...
gwri8 Posted October 24, 2017 Share #12 Posted October 24, 2017 Owning a Z will turn you into a mechanic. Very knowledgeable people here that have done it all and then some. You can start here http://www.classiczcars.com/files/ by downloading the Factory Service Manual for your 78. Learning how to repair your Z is invaluable and easier than an engine swap if you don't have the experience yet. Link to comment Share on other sites More sharing options...
Wilbur
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