bahlorm

Sorry I have checked the timing and they are lined up correctly with the notches. My float bowls are half way in the glass after I rebuilt the carb before. Also when I rebuilt the carb before I soaked the jets in carb cleaner over night and sprayed cleaner through them and there was a steady stream coming from all of them. Unfortunately I do have other posts about this that I have not mentioned here lol.
I also felt how timing could cause many problems. For example when I adjusted the timing on this car and what I thought was the notch ended up being a rust spot. I took the car down the road and it was jumping like mad on acceleration and worse on deceleration until high rpm. That's when I took 2 cans of engine degraser and sprayed it everywhere to clean the pulley and the rest of the engine off a little. After that I finally found the right notches.

bahlorm

Okay I have a link to a video I took today of what the rx7 is doing... Hopefully the sound works right, on the camera you didn't hear the engine noise but on my windows media player it had the engine noise in it, but anyway here is the link.
http://www.youtube.com/watch?v=1zY87Rrjt30

bahlorm

Well it has the volume.. but you have to turn it up pretty loud to hear it inside the car, and I realize the pressure gauge says 0... idk why it does that but it will register 0 sometimes and up to 2.5 other times.

rotordogg

iTrader: (4)

Don't have time to read all the posts on this thread but it sounds like you have a major exhaust leak and possibly a vacuum leak.

bahlorm

yeah I do have an exhaust leak somewhere, I have not found out where yet but I don't think that would cause this problem so I have not bothered with it lol. Also I do know I accidentally did rev the car a little high with it being cold :p usually I don't get it over 3k until it is warm.

Jeff20B

iTrader: (13)

Sounds like your shutter valve too.

bahlorm

No idea what the shutter valve is lol. But I am glad to say I filled it up and averaged 18 mpg with it now with me hard on the gas a few times. Trying to get a time from 0-60 but I could only estimate maybe around 9-10 secs and it was trying to oversteer on me a little around 1 turn. I thought that it oversteering was pretty impressive for this car being stock and with problems, until I saw my back tire was low lol. But that is getting kind of off this subject. I just have to say even with it being as slow as a mini van and with all the problems it has I just love this little thing.

bahlorm

Well I have amazing news! I checked my timing to find out I actually timed my leading ignition to the wrong notch. After timing the car correctly then readjusting the carburetor the car is actually running very well! It has a very small stutter in it every once in a while but it does not jump anymore in deceleration and it has a lot more power than it used to have. I also found the exhaust leak I have in the donut gasket and bought a new 1 that will be getting replaced tomorrow so this car doesn't sound like a damn weed wacker. Before I really liked this car and now I just have to say I have fallen in love. Thanks everyone for all the **** you all have taken from this and the time you have all taken to try and figure out this problem. Unfortunately it was a problem I thought I already had fixed and told everyone I had fixed already.

t_g_farrell

iTrader: (1)

Thats good news, glad you figured it out. Its always something simple thats
the hardest to find and fix.

bahlorm

Thanks ya it was of course something I checked earlier but I just did incorrectly. Which this didn't completely fix the problem but helped a lot. It seems this cars just got a series of problems that is having the same effects. But right now it is to the point to where I barely notice it and it has gotten the power back in it that I would figure would be about normal. Still slow lol but normal for this car that is stock, the added power will come in time.

bahlorm

Okay everyone. I have come back to this post to ask a few questions I am wondering about. One being the coil's. A few have said it is possible the coil's could be weak and I am wondering how to go about checking this. I do have a cheap multimeter from walmart, and I have yet to use it. If there is any way to see if these may be producing a weak spark I would like to know. Also the other question is for the fuel return line, instead of having that banjo bolt with the little rail I have just a hose attached over that and attached to the rest of the return line. If you guys may know what I am talking about. But the reason for this is I was missing many of the bolts for the air horn. I managed to get the 2 that attach the fuel line to the carburetor but I was never able to find that 1 piece to attach the return line. So I am wondering if its possible that it may cause a problem.

85rotarypower

Not sure if you checked it yet, but have you checked your engine to chassis electrical ground? If your ground is not good the spark can become erratic at higher RPM.

LizardFC

iTrader: (1)

I'm gonna let someone else address the ignition issues because that's not an area I know much about. As for the banjo bolts... are you saying there's no return line at all? That would definitely cause a problem, because you'd be dead-heading the carb with a pump that's probably not set up for it. Got a pic?

bahlorm

No there is a return line it is just modified a little bit to get it to work. Instead of the little metal rain that was on it, there is just a hose I clamped down to make the return line. I am not sure if that could effect fuel pressure or anything. I may be able to get a pic of it soon. The car has been running with this modified since I have had it. But also I have been having this problem since I have had it. Also I have not checked the ground to the engine any idea on where it may be located?

bahlorm

UPDATE!!! I found a couple things out so far today.
New thing number one! My accelerator pump definitely works properly, pulling the throttle cable and watching the carburetor there are 2 steady streams going through 2 barrels on the driver side.
New thing number two! My mechanical secondaries might as well of not of been hooked up at all! The linkage on those were so loose even at full throttle I am sure it would not have moved. I have now tightened it up so hopefully I will get some acceleration!
New thing number three! Now I don't know if this is just me hoping I may of found a problem and my eyes messing with me or what. I took out my spark plugs because I know they are drenched in fuel and when I got to looking at the leading and trailing it looks like that my leading plugs look more gray while the leading are just black from the fuel. I do have an image of this if anyone is really able to tell in this picture below.
But if it isn't my eyes fooling me then I am wondering what may cause this other than maybe the coil's. Both leading and both trailing look the same and of course these were new plugs about a month ago and I have new wires along with all the other **** I mentioned before.
Also I have the picture of what I did to the return line for Lizard and anyone else who may know if this could cause problems.

psiturbo

iTrader: (-1)

Do a compression test, maybe one of your rings is bad... lol

Please post pics of the car, the sparplug pics... macro please!

bahlorm

Unfortunately the spark plug pic is the only one I took. But another thing to add with the help of my step father I managed to find out that both my coil's have weak spark. I have been told the way to check is to check the color of the spark, yellow is weak and blue is good. Both my coils are sparking yellow.

LizardFC

iTrader: (1)

Whoa there! You've got your vent solenoid capped off. It's that big red cap to the left of your fuel lines. And the solenoid itself is that big bolt right there in the center with the two wires coming out. That needs to be plugged in if it isn't already. Without that, your carb won't be able to vent properly and that will definitely cause problems. Check this write-up on how to properly remove the rat's nest and it will tell you how to hook up the vent solenoid: http://maz_tutorials.ten15.net/Tutorial_1.pdf

Also, I would say you are running rich by looking at your plugs.

bahlorm

Oh, do I just leave it open or is there a hose that is supposed to be going to it? I never even realized that. I just saw a hole there and thought maybe it can cause a vacuum leak and plugged it lol

LizardFC

iTrader: (1)

There should be a hose.

bahlorm

I saw the hose in the pictures in the link but never saw where it connects to.

bahlorm

Okay, I found where the hose goes to and will make sure I get that fixed.

j9fd3s

iTrader: (3)

not a very good test, i wouldn't change any parts based on that.

bahlorm

Ah that is the only thing I have seen on how to see if the coil's are producing a weak spark or not. After I actually tightened the linkage for my secondaries and scraped off the plugs, I managed to get from 0 to 60 in 20 seconds lol. Big jump from 34 seconds, and the car kept going faster even after 6k rpm but still no power, and still running too rich to get this power. But if it is an ignition problem, the only thing I could think of it being that I have not replaced yet is the coil's, and they are $30.99 a piece. I thought about getting that plus new plugs the same day. If this doesn't solve it then I am thinking the chance of it being ignition is very slim. If this does not work, I am thinking if this doesn't solve it then I will do another rebuild, and if this does not work just forking over money and going about a new carburetor.
I also checked earlier on the ground to the engine and it is a little covered in gunk but it was not in bad shape. I also have gotten that hose in the correct spot. If anyone has got anything else I should look at before I start spending more on pieces I hope will fix this problem please just let me know and I will definitely look into it.
I will again put a list of everything down I have already done = mr gasket 7psi fuel pump, 3 fuel filters replaced, new air filter, no cat, rat's nest removed, holly fuel pressure regulator, ngkr plugs, standard plug wires, dist cap, dist rotor, timed the car, attempted to adjust carb (also had a friend adjust it), rebuilt carb with rebuild kit from autozone, mostly all new fuel lines, checked for vacuum leaks with 4 cans of engine degreaser with no luck.

bahlorm

Okay, got another update on this. I did put that hose in the appropriate spot, I put in my friend's coil's into the car which were in good shape and after that the car idled a little smoother, unfortunately now we are both still stumped on the problem. I did notice that this here http://www.sterlingmetalworks.com/images/137_3787c.jpg is not plugged or anything. It says that it was the richer circuit found on automatic transmissions (which I have a manual) and could be a potentially large vacuum leak if not properly reassembled or sealed. I did find a screw that fit inside there and I tried to seal it but it still did not make any difference. I am not too sure if anyone knows any other information on this or not. My next suspect is maybe my carburetor was not rebuilt correctly. There is just so much that has already been checked and the problem is still not solved. So I may have to go back to what I have done and check it all again.