ray green

iTrader: (14)

Damn, all this sounds so familiar. Getting zapped by a coil is one of the best educations you can get.

Post that video bahlorm, and a pic of the gold thing.

bahlorm

Okay as soon as my GF get's home I will do so. The gold thing is actually in the bottom left corner of the last video. You can barely see it, there is a long big hose that connect to it and when I take that hose off is when it makes a big difference in sound. And the zap was definitely an educational experience! They should of used shocks like that in school. Maybe I would of learned something.

LizardFC

iTrader: (1)

It sounds like you have an army of vacuum leaks. If you can, post a bunch of pics of how the carb sits from all different sides. Maybe we can spot something amiss.

bahlorm

Okay here is what I am talking about with the vacuum hose in this video.
http://www.youtube.com/watch?v=OV8VfyGYviQ
I don't remember why I made this one, but it has a little bit of what is going on with the car.
http://www.youtube.com/watch?v=jy6f-KfNFxw
Before I revved it up the car would bog down a little, usually a little more than that in the video but after it is higher up in rpm it has no problem. Unless I rev it around 5k+ then I get lots of white smoke.

LizardFC

iTrader: (1)

The thing in the first video is an anti-afterburn valve and it connects to the intake manifold. It looks like it was hooked up right. You don't want to leave it unconnected or you'll have a big leak at your manifold.

bahlorm

Ah is it supposed to make that much of a difference in sound though? The car sounds smoother without it and makes me wonder if that could be the cause of it. But I also have no idea where I would go to find another one of those. It just sounds rough with it plugged in and having it unplugged makes it sound so much smoother. It just hesitates much more with it unplugged.

Kentetsu

Have you tried plugging the end of the hose (rather than plugging it in)? Just put your thumb over it for a minute and see what it sounds like.

If it runs better with a huge vacuum leak, that would imply that you are getting too much gas. Are you sure that the primary fuel jets didn't get mixed up with the secondaries during the rebuild?

74RX4

iTrader: (10)

Check the bottom of that hose carefully per this thread. It often melts from the heat of the exhaust directly beneath it.

https://www.rx7club.com/1st-generation-specific-1979-1985-18/hose-question-750125/

bahlorm

I didn't think the jets could get mixed up. If it is possible without screwing up the threads then it may be possible. I have a picture of the top of the throttle body in this thread. I don't know if you can tell from there or not. It seems as if smething is giving it too much gas. Especially when revving it up high and seeing how much smoke pours out of it. The car is definitely running rich. I went to go check and see if plugging the hole would make a difference and now it makes no difference weather its plugged unhooked or hooked while idling. This car is weird lol.
I did loosen up the throttle cable and it idled real low and rough and with some adjustment with the carburetor it was idling back around 1000, and more smoothly. It is still not fixing the problem though. I am able to get it to idle lower but the lower the idle the more the hesitation is and the more of a chance it will kill the car. So I kept it at 1000 until I can find out what is causing this problem. So I am now kind of back to where I started with the hesitation. Ignitors are good, coils are good, just had a tuneup, rebuilt the carburetor (for the first time.) So I am beginning to run out of what it could be. The only thing left on my mind is a vacuum leak which I have made sure everything is plugged so this thing is hiding real well if there is 1, or the fuel pump/regulator this guy put on the car. Or I messed something up with the carb rebuild, and it never fixed the problem.

I had the whole hose off of the car earlier today and the hose appears to be in good shape. I actually have not run across any hoses that had any cracks or signs of dry rotting throughout the car, but I am missing the small hose and not too sure where it attaches to. I don't know if what goes to it went to other emissions I took off and plugged or if I am missing it.

DivinDriver

iTrader: (15)

The fuel jets are the ones down in the bottom of the float bowls; those are the ones you reach through the plugs in the outside of the bowls.

The big jets (larger holes in them) go for the secondaries; smaller ones for the primaries.

bahlorm

Oh I thought that the jets were all the ones on the top of the throttle body that screwed off with a flat head and had holes in them lol.

LizardFC

iTrader: (1)

Those are the emulsifiers. The smaller ones are air bleeds. Sterling has a good explanation of what they do on his site, along with everything else.

Here's a tip for you and anyone else who reads this in the future. Clean the air bleeds, emulsifiers, and jets one by one to prevent mixing them up. Remove - clean - replace - then move on to the next one. As long as they were in the right place at the start, they'll be in the right place when you're done.

If you think you've got everything sealed up, then start spraying some starter fluid to test it. Use the little straw and target specific areas and listen for any change in engine speed. You can go around the carb and systematically eliminate all possible leaks. I'm betting you still have at least one.

74RX4

iTrader: (10)

Like DD said, primary and secondary fuel jets are in the bottom of the float bowls. I soak all the gas out of the bowls with paper towels. If you haven't done this you will probably find gunk in the bottom of the bowls. You can remove the jets as DD mentioned (through the plugs). I use a small 90 degree screw driver to loosen them then remove them by reaching into the bowls with my fingers. The jet with the smaller opening is the primary. The larger opening is the secondary. I soak them in carb cleaner overnight then blow them out with compressed air. One of the Primary jets is visible in Ray's picture.

bahlorm

So the jets are actually the things inside the float bowls? The 2 little things that can be gotten with a flat head. Both of the screw things look the same. And those I did not clean. I will take those out and have them soaking in carb cleaner tomorrow.

bahlorm

Well damn, then those definitely need to be cleaned and I will have to keep track of them so I don't get them mixed up. I see now how they can get switched around and I am sure it causes problems.

74RX4

iTrader: (10)

Once you get them out you will see that the holes in the secondary jets are much larger. They also have numbers etched on them. Easy to tell them apart.

bahlorm

I just have to remember which one goes where in the carburetor itself. And luckly If I lose these since they look real small, I have another pair from my other carburetor which is actually currently soaking just in case I need it lol.

LizardFC

iTrader: (1)

If you think it runs bad now just try getting the jets mixed up

74RX4

iTrader: (10)

Jets with smaller opening (92) go next to the smaller barrels, larger opening (160) go next to larger barrels.

bahlorm

Okay, lol. I don't want to find out how much worse it runs with them mixed up. This one thread has gotten over 3 pages long and I have yet to fix the problem. But luckly everyone has stuck through this experience with me and you guys are still trying to help me through it all so I thank you for that. I will get the jets out and clean them today. Or since this other set has been sitting in cleaner all night I might just put these in instead since it has come off my nikki test subject. Everything I plan to do to the carb on the car, I do to my donor first to make sure I know what I am doing.

bahlorm

Okay so I went to put the clean jets on the carburetor. Once I got them on and I made sure they were in the right spot I tried to start the car and had no luck. I took the air horn back off and realized that one of the float bowls were half full while the other one was completely empty. So after a while of messing with it I decided I will just clean the old jets real fast and stick the old ones back on the car. After I did that and a few tries of it almost turning over the car finally fired up. It sounded like it was missing real bad and the car started idling at 1500 then as it warmed up it dropped to about 1k then about 800. There was no hesitation when I got on the gas but if I went without pushing on the gas for more than 30 seconds it slowly dropped in rpm and when I got out of the car it ended up dying. I looked and saw a bunch of smoke inside the carburetor and after I blew it all out I saw a **** ton of fuel just being poured into the carburetor while it was shut off. Which it is doing it on the side of the carburetor where I had problems with the jets. So my problem is trying to figure out why this is doing that now lol. And if it is related to the jets or if there is another problem. I put the jets in the same spots as they come out of. The float bowl I was having trouble with was the one closest to the radiator. And I put the primary jet in the hole closest to the passenger side and secondary in the one closest to the driver. Which is how it was in the first place. And of course if I recall the primary is the one with the bigger hole secondary is the one with the smaller hole.

DivinDriver

iTrader: (15)

Primary = SMALLER BORE. Closest to the driver (left) side. Gets SMALLER jet.
Secondary = BIGGER BORE. Closest to the passenger (right) side. Gets BIGGER jet.

bahlorm

Oh well then I have it in the right spot but I didn't know it lol.

LizardFC

iTrader: (1)

Haha I read that last part and was like "Oh god, no..." Glad you ended up having it right afterall. It may just be the usual sticky needles that are so common after a rebuild. Give the air horn a few good hard taps with a hammer and start it. Watch and see if the fuel in the bowls levels out to where it should be (right in the middle.) On the plus side, if the idle dropped down to 800 then you probably don't have any more vacuum leaks.

How did your floats look when you had the air horn off? Did they sit evenly and have roughly the same travel? When I rebuilt my first carb, I carelessly pulled the air horn off and ended up bending the tabs on my floats to the point where they would never sit right again Luckily a good friend of mine had a spare.

bahlorm

I am not too sure on the floats. There wasn't much of a difference between the two and I didn't really see much of a difference, but I had the air horn upside down with the floats just dangling on it while I was fiddling with the jets. But I can try and tap it with a rubber mallet to see if it does anything.