HELP-she no run right!!!
Guest
Posts: n/a
HELP-she no run right!!!
Long story/short-bought 77-280z FI 5 sp that sat in barn for 7 years-
fired up and ran ok when i got her home (changed all tune up items incld draing fuel tank, bought new injectors/injector wires and plug wires etc) rev to redine fine, (about a month ago)
but now that i am ready to tag/drive (body work done for now) she starts and idles fine, revs to 2-3000rpm great but above 3000rpm the motor acts like the fuel supply or electrical is getting turned off every second, sounds like i am reving her up then letting off in a fast way, vroom, vroom, vroom etc but i am holding the pedal steady. Kinda like it drops about 3 cylinders above 2,500/3,000
Things i have done since this started:
changed plugs, distrb. cap/rotor, and fuel filter under hood. unhooked/hooked up dist. vacume advance, checked timing (hard to say has 2 marks that show up on flywheel under timing light, think its set around 13 degrees as i didn't think the vacume adv works) replaced coil.
Bad:
Fuel regulator thingy?
Fuel pump?
Dist.?
Possible other causes....was changing dash temp guage thermostat two days ago(right before this started), had distrb. cap off to get the plugs wires out of the way...when i removed the water inlet housing from the motor some anti-freeze poured out (d'oh forgot to lower water level in radiator) and i believe some went in the open distrb. (cap had some splashed about the inside when i removed cap next day.) I left the cap off all night and put on a new cap and rotor but i worry anti-freeze don't dry so well.....would that make it idle nice down low but cut out up top?
The Suncoast Zcar Club is having their annual pinic Sunday!!!! MUST ATTEND.....sigh
Maybe it was long story/long..
Antony
St pete Fl
'77 280z 5sp
fired up and ran ok when i got her home (changed all tune up items incld draing fuel tank, bought new injectors/injector wires and plug wires etc) rev to redine fine, (about a month ago)
but now that i am ready to tag/drive (body work done for now) she starts and idles fine, revs to 2-3000rpm great but above 3000rpm the motor acts like the fuel supply or electrical is getting turned off every second, sounds like i am reving her up then letting off in a fast way, vroom, vroom, vroom etc but i am holding the pedal steady. Kinda like it drops about 3 cylinders above 2,500/3,000
Things i have done since this started:
changed plugs, distrb. cap/rotor, and fuel filter under hood. unhooked/hooked up dist. vacume advance, checked timing (hard to say has 2 marks that show up on flywheel under timing light, think its set around 13 degrees as i didn't think the vacume adv works) replaced coil.
Bad:
Fuel regulator thingy?
Fuel pump?
Dist.?
Possible other causes....was changing dash temp guage thermostat two days ago(right before this started), had distrb. cap off to get the plugs wires out of the way...when i removed the water inlet housing from the motor some anti-freeze poured out (d'oh forgot to lower water level in radiator) and i believe some went in the open distrb. (cap had some splashed about the inside when i removed cap next day.) I left the cap off all night and put on a new cap and rotor but i worry anti-freeze don't dry so well.....would that make it idle nice down low but cut out up top?
The Suncoast Zcar Club is having their annual pinic Sunday!!!! MUST ATTEND.....sigh
Maybe it was long story/long..
Antony
St pete Fl
'77 280z 5sp
The Evil Twin
Joined: Mar 2001
Posts: 9,296
From: Seattle, WA
ITS YOUR THROTTLE POSITION SENSOR!
either it went bad or has water/corrosion in it. Maybe just remove the plug off the bottom of the sensor on the left side of your throttle body. Clean those connections with your toothbrush and some WD-40. (the stuff works good on your teeth too) Do the same to the connections on the bottom of the sensor. Let them air dry for a few minutes. Plug the guy in and rev to the moon!
either it went bad or has water/corrosion in it. Maybe just remove the plug off the bottom of the sensor on the left side of your throttle body. Clean those connections with your toothbrush and some WD-40. (the stuff works good on your teeth too) Do the same to the connections on the bottom of the sensor. Let them air dry for a few minutes. Plug the guy in and rev to the moon!
Guest
Posts: n/a
hey! I had the problem of completely stalling
my gas tank was clogged and I could drive about 300 ft. then it would stall. After I replaced the rear fuel pump and the ignition I figured out that I wasen't getting fuel out of the tank. I drained the tank, removed it, had it rebuilt(acid dipped and painted). Here is the solution after the previous did not work, I took a bicycle gear change wire and cut one end off. removed it from the plastic sleve and flared the end to make a wire brush. Then push it down the inlet tube and roto-rooter it until I could push all of the way through. now it works perfect.
