Randall Posted August 14, 2012 Share Posted August 14, 2012 Just bought a stock 77 280z.. It is missing quite a bit of power compared to my 76 with tripple webers. I just cleaned the tank, installed new fuel pump, replaced a clogged injector with a working injector i had lying around. Checked timing plugs and wires everything looks good there. So no onto the problem... The car cruises beautifully but when i try to accelerate it wont go past about 3000 rpms. i can go past 3000 if i just ease into it but not full throttle. Sounds to me like enrichment is not kicking in? Any ideas on what i should be looking at? Quote Link to comment Share on other sites More sharing options...
rickyellow zee Posted August 14, 2012 Share Posted August 14, 2012 Check your CHTS and see if its up to specs. If its faulty your car will run like poop. Quote Link to comment Share on other sites More sharing options...
Randall Posted August 15, 2012 Author Share Posted August 15, 2012 ok so i got the car to run decently (revs past 2000-3000 rpms) what i did: I removed engine bay filter sprayed compressed air through the fuel rail/return line disconnected fuel pump and sprayed air through supply line connected everything with a fuel pressure gauge between filter and fuel rail Pressure at idle and revving is 29 psi I then removed the vacuum line to the FPR and my fuel pressure went to 38 i took it for a spin and 1st gear revs fine to about 5000 or so then feels like it looses some get up 2nd gear revs a little slower and 3rd is even slower than 2nd. not sure how a stock 280z drives but my 280z with the tripple webers seems to have a little more pickup especially on top end Is the FPR bad? What other things should i look at? BTW i dont think this car has a CHTS Quote Link to comment Share on other sites More sharing options...
Randall Posted August 20, 2012 Author Share Posted August 20, 2012 well got the car running great and i had done the 280zx alternator swap/mod problem... i was driving the car and got stuck in traffic the temp gauge started to climb to a little bit past halfway but continued to run and idle fine. I then took a right and gave it some gas in first. next thing i know i hear a pop and the car dies and smoke comes in by the fuse box. i stop the car and start to see smoke out the hood so i pop the hood to see the wiring harness on fire. I grabbed my bottle of water and a wrench and put out the fire and pulled the positive battery terminal. I just finished rewiring a small section of the harness this includes: ground to the side of the block all alternator connections(wired the S-yellow wire straight to battery terminal to get a good sense) and power wire that splits into 3 coming off of the alternator for charging. I did not have a fusible link for the alternator which is why i had the fire (lesson learned the hard way). So everything is wired back up and i have a fusible link in place. So i start the car and start trouble shooting. Voltage at the battery is a steady 14.00 volts. The fusible link for the alternator starts getting really hot so i shut the car off (this is why i had a straight wire in the first place). What would be causing the fusible link to get hot? Why would there have been so much current to start a fire in the first place? Quote Link to comment Share on other sites More sharing options...
Leon Posted August 20, 2012 Share Posted August 20, 2012 Sounds like you have a short in your alternator. Test it. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.