80DrIfTeR

iTrader: (1)

okay i started reassembling everything today and ran into a few issues... first and foremost, i replaced every vacuum hose i could find in the engine bay.... WOW!!! those things were stiff and brittle!!!



the problems i ran into is this... found this vacuum hose on the manifold, but there is a broken nipple inside it.... could not find the source of where it goes.... any ideas? it is on the passenger side of the motor near the two solenoid valves....



other problem i ran into is i dont have this part.... ive checked the entire car and all the parts the guy gave me with the car and have not found it.... dont know what it is. it looks like some kind of vacuum chamber like a checkvalve or something. does anyone know what i can use in place of it? also there is a checkvalve located on the back of the plenum that was broken when i went to reassemble everything... will any kind of vacuum check valve work tin replacement of it?







any and all help is appreciated!

Whisper

The vacuum line goes to the vacuum switch that's tucked away in the corner between the windshield washer reservoir and firewall.

The round chamber doesn't have a check valve or anything, I believe it's there to just dampen the pulsation. Could probably do without it.

80DrIfTeR

iTrader: (1)

okay thanks whisper.... one more problem. there is a vacuum line running from just under the fuel rail. it comes off the lower intake manifold. i cannot find it on the diagram so i need to know where to plug it in.... any help?

80DrIfTeR

iTrader: (1)

okay i got everything back together but for some reason she still wont start.... the only way i can keep her running is if i start the vehicle with full throttle and the fuel pump only on for a second or so.... then i keep cranking her and she finally catches.... plug in the fuel pump and keep her full throttle.... the tach on the dash says shes running at about 2k, but it sounds like a lot more to me.... i cant release the throttle or she bogs and dies....it almost seems like its only running on one rotor, but i cant get her to IDLE long enough to check wires to plugs....i dont have that vac chamber installed, do u think that could be the issue? when i first got her to catch, i had a LOT of white smoke out the back, and after shutting her off, i had smoke from the engine bay.... looked down in the bay and the O2 sensor housing was RED HOT!!! glowing red!!! clogged cat? any and all help would be appreciated. THANKS

Rx-7Doctor

iTrader: (13)

Definitely running lean.

Vacuum leak or one of the injectors is not firing.

80DrIfTeR

iTrader: (1)

no vacuum leaks at all i fixed every single one! how can i test the injectors without a noid light? can they be jumped? to see if they spray? like plugging in the wires to a jump box and sending juice to em with the fuel flowing? see if they spray? i have a feeling ur right about one of the injectors not spraying..... i replaced the o-rings on the air bleeds, and pushed em back in, then boloted everything back down and no leaks but i dont know if the injectors are firing..... thanks for the help doc! will let u know tomorrow if thats what it was.

80DrIfTeR

iTrader: (1)

hey doc u think that vac chamber might have something to do with it??? or lack thereof?

80DrIfTeR

iTrader: (1)

okay heres the story and details.

Purchased an 84 GSL-SE from an army mechanic for 400 bucks. guy said injector o-rings were shot so he pulled the entire upper intake apart and didnt know how to put it back together. so i brought her home on a flat bed, ordered all new gaskets for her, including all new fuel injector o-rings top bottom and middle, and new plenum and uim gaskets. replaced all the vac lines while i had it all apart as the old ones were dry and brittle. ran all the vac lines to their proper places....i think..... also replaced fuel filter, dist cap, rotor button and cleaned all the plugs.... also drained all the fuel out of the tank and put about 4 gallons of premium in her just to help clear the old stuff....

now the problems.... first and foremost, when turning the key to on position, fuel pump immediatly comes on.... dont know why yet, but have a feeling maybe he hotwired it so it would always run.... gotta trace that out. second: i attempt to crank and i have to unplug the fuel pump behind the drivers seat and wide open throttle to get her to catch. as soon as she catches i have to plug back in the fuel pump real quick and keep the throttle at 50-60% to keep her running... i can adjust the throttle cable manually and keep her about 1400rpm but any lower and she stalls out.... and of course the pump continues to run.... on a side note, rx7Doc thought it might be an injector not firing so i pulled everything and pointed the injectors away from the car with everything attached and with key on, no spray but during crank, i get spray... which means the trailings are firing. ALSO, after she stalls, i hear what sounds like a vac leak coming from the area around the brake booster... no other vac sources or lines there but the booster....would that cause a no start condition???
I am getting spark on all four plugs, and i did run compression test on all four points. everything seems to check out during compression.....

Another side note: with the AFM unplugged, the car will crank and run for about a second then stall... but with it plugged in, i have all the issues. was thinking it might be a bad afm, but havent run diagnostics on it yet. thats tomorrow.
Will a FC afm work on my FB? parts are hard to come by for FB's here in hawaii, but FC's are somewhat common.

any ideas or suggestions would be greatly appreciated. for ANYTHING!!!

80DrIfTeR

iTrader: (1)

also, i just found that i put 2 vac lines in the wrong place.... theres one in the center of the intake manifold just between the oil lines from the opm i have it running to the side of the upper plenum but based on this pic it doesnt go there.... the one that does go in that spot is the one i circled,..... but where does it plug in at? i need a good picture of the vac lines routings....

Rx-7Doctor

iTrader: (13)

The FSM had very clear pictures of the Vacuum hose routing.

Check and see if the AFM flap door is in the open or closed position. Also make sure that the air ducting hose is tight at the AFM, where it joins with the clamp, at the Throttle body and that the small hose for the bypass that comes out of the air ducting hose near the throttle body is seated correctly and not leaking.

80DrIfTeR

iTrader: (1)

Doc, thanks for merging the two threads.
And i checked the FSM but it didnt give me a proper location for the vac lines im concerned about....
Will check in the morning if the AFM door is open or closed... will also check the fuel pump test wire see if thats whats causing the pump to run continuously.
When u say small bypass hose do u mean the one at the top of the plenum that goes into the rubber intake piping? This one?

80DrIfTeR

iTrader: (1)

and this is the vac line i cant find a place to plug it to.... it runs from just in front of the fuel rail

80DrIfTeR

iTrader: (1)

okay DOC YOU ARE THE MAN!!!! took the afm off the car and inside is this nasty black tar looking stuff... cleaned it all out and made it so the door could swing freely, then put it all back together. Car started right up. was idling at only about 600 though. it also solved the fuel pump issue. the door was wedged open from the tar so the pump was always running. going back down to checkers later to have em replace the battery as this one is completely disacharged from me cranking. my next step is to go through the "idle issues book" and start setting the idle. Thanks again DOC will repost with more details.

80DrIfTeR

iTrader: (1)

ok so i cleaned up the AFM as well as i could, and for the most part its better, but it still gets stuck... ive gone thru the idle issues book, but cant seem to make her run right... watch the viedo and tell me what u all think.

gsl-se addict

iTrader: (3)

If it is the largest hose under the fuel rail you are talking about, that is for the sub-zero fluid.

Rx-7Doctor

iTrader: (13)

If the AFM flap door will not move freely then then idle and overall performance will be greatly affected.

80DrIfTeR

iTrader: (1)

i really think its the afm or the bac i got a new afm coming to me by wednesday so that will tell me if thats the problem.

80DrIfTeR

iTrader: (1)

okay i went back to the basics.... i checked the timing... pulled the distributor and checked all the ignitors and reinstalled the distributor.... and she started right up..... guess the guy failed to tell me he removed the distributor when he pulled the manifold. it was off by a tooth.... so here she is...


Ive begun the paint work. ran out of spray primer. gotta go back up and get some more. think im either gonna go with the royal blue for the top coat or a deep purple.. what do u all think of the blue?

84stock

iTrader: (5)

wtf is with all the primer and ****, the other side looks great..

80DrIfTeR

iTrader: (1)

The primer is cuz I'm painting it. Getting my compressor tonight and I'm gonna spray it tomorrow then two coat it a good color. Then it will be good. The was so much rust and dents on that one side so it needs a new coat

80DrIfTeR

iTrader: (1)

began the paint work tonight.....

check it out!

Rx-7Doctor

iTrader: (13)

You probably don't know but the bumpers needed a different mixture of paint with a flex agent in it or they are going to crack. Same thing with the side moldings.

80DrIfTeR

iTrader: (1)

Oh well! Its rustoleum on the entire car. This is more of a temporary paint until tax time when I get my return and can really sink some money into her. Thanks for the heads up though