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-   -   dead front rotor? (https://www.rx7club.com/1st-generation-specific-1979-1985-18/dead-front-rotor-755782/)

slate84 05-13-08 01:04 PM

dead front rotor?
 
Ok, a week or two ago i was driving back home and right as i let off the gas to coast into the driveway, i didn't drop down to idle, it just died. Searched all around to find that my wires were prob junk and i'd lost the nut on the accelerator rod on my dell. today i got my new wires from mazdatrix and a new intake gasket since i had to take off the intake to get at the rod. got everything hooked back up and ready. she runs now but on one rotor?!, i pulled the plug wire from both the plug and the coil and saw/heard the spark jumping, but the motor wasn't affected. i pulled the plug and saw it was wet so i cleaned them off with a brass brush, turned the motor over and listened, strong poofs, and put the plugs back in. started it up, running on one rotor again. put my hand over the front barrel on the carb good suck, it would pull my hand right to it and then cover my palm in a fine blanket of gas. i blew threw all the jets too when i had her apart? i don't know what it could be???

pinoyremix 05-13-08 01:14 PM

uh oh problems since you installed your carb...i hope nothing happens to mine

pinoyremix 05-13-08 01:15 PM

still deciding if i should just go one piece manifold...

slate84 05-13-08 01:15 PM

this is the only real prob i've had, im not blaming it on the dell at all. (200th post)

pinoyremix 05-13-08 01:28 PM

wooo 200!!!

slate84 05-13-08 09:08 PM

Bring
Up
My
Post

slate84 05-13-08 10:11 PM

any help is welcome and needed!!!

RustyRacer 05-13-08 11:32 PM

I'm having similar issues with mine, but i've got the nikki

Rotor13B 05-14-08 05:56 AM

Pour a little bit of oil down the front rotor intake of the carb and wait for about 5-10 minutes to let the oil dribble down the intake and into the housing. Start it up and hold it at about 2500-3000 rpm and it should start popping and sputtering after a few seconds. Keep holding it until smooths out and then let off and let it fully warm up. If you haven't done an oil change in awhile now would be a real good time to get it done. If your oil has gotten thin the seals aren't sealing as well and your oil pressure isn't going to be as high as it should be.

I had this exact same thing happen to me with the same carb but on the rear rotor. An oil and filter change along with new plugs cleared that up.

slate84 05-14-08 11:03 AM

just poured like a 1/4 cup of mmo down the front runner. going to take a shower and then see how it starts up. then direct to the oil change.

pinoyremix 05-14-08 11:15 AM


Originally Posted by Rotor13B (Post 8189581)

I had this exact same thing happen to me with the same carb but on the rear rotor. An oil and filter change along with new plugs cleared that up.

now does premixing help prevent this?...bc im going to drill and tap my manifold to put omp lines in...

StumpDrummer 05-14-08 04:09 PM

Had the same happen to me a few years back on an 82 model
un hook you coils you dont want sparks while doing this take the plugs out clean them good and turn it over a few times
wait a min or 2 and turn it over again
if it blows out a lot of fuel please change your oil asap
i would anyways just in case put it all back together
pour a little trans fluid in let it settle down the intake for a min or 2 then crank it up let run for at least 5 mins to get warmed up and make sure all the gas is burned out of it ...gl:)

Jeezus 05-14-08 04:29 PM


Originally Posted by slate84 (Post 8190029)
just poured like a 1/4 cup of mmo down the front runner. going to take a shower and then see how it starts up. then direct to the oil change.

Woah, 1/4 cup? You only need a capful... Good luck starting that engine!

slate84 05-14-08 05:49 PM

actually started and ran off the back rotor only like it had been. took the jet cover off the dell and turned the smaller of the to jets on the front rotor a little and it started to run fine? drove it around, ran fine, right as i pulled in it started running off the back rotor only again. played with it and came back. it went back and fourth getting worse and worse. said f it and parked it. came back out and gas just dripping from the car. the return line i capped of was shooting gas i took the cap off the tank to equalize the pressure and the gas stopped coming out of the return? what is the next step?

Rotor13B 05-14-08 07:30 PM


Originally Posted by slate84 (Post 8191402)
actually started and ran off the back rotor only like it had been. took the jet cover off the dell and turned the smaller of the to jets on the front rotor a little and it started to run fine? drove it around, ran fine, right as i pulled in it started running off the back rotor only again. played with it and came back. it went back and fourth getting worse and worse. said f it and parked it. came back out and gas just dripping from the car. the return line i capped of was shooting gas i took the cap off the tank to equalize the pressure and the gas stopped coming out of the return? what is the next step?

How far out are you mixture screws? Two and a half turns is ballpark and then adjust from there. Make sure you change your oil for sure now, I bet it reeks of fuel and is only going to make it harder to get running well. As for the fuel leak make sure you get that capped off properly, Don't want any fires going on!!!

slate84 05-14-08 09:52 PM

both are three turns out, which it should at least hold an idle. i think im going to take the carb back off and blow out all the circuits, somethings got to be stuck in there, i just don't get it and i'm starting to loose hope:-(

Rotor13B 05-15-08 04:15 AM


Originally Posted by slate84 (Post 8192302)
both are three turns out, which it should at least hold an idle. i think im going to take the carb back off and blow out all the circuits, somethings got to be stuck in there, i just don't get it and i'm starting to loose hope:-(

Make sure when you put the pump jets back in that you line up the two holes on the jet and jet holder. This will cause a big pain in the ass if not done correctly.

slate84 05-15-08 06:16 PM

duely noted. i made sure of that when i rebuilt it the first time.


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