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-   1st Generation Specific (1979-1985) (https://www.rx7club.com/1st-generation-specific-1979-1985-18/)
-   -   Are these cars really this hard to start? (https://www.rx7club.com/1st-generation-specific-1979-1985-18/these-cars-really-hard-start-954494/)

Kentetsu 05-23-11 05:42 AM

When you say you removed and cleaned the jets, you are talking about the ones screwed into the side wall at the bottom of the float bowls, right?

74RX4 05-23-11 07:47 AM

1 Attachment(s)
Have you downloaded the carb manual?
http://wright-here.net/files/manuals...01979-1985.pdf
79-80 starts on page 45, 81-82 page 77, 84-85 page 103. Very specific instructions and diagrams.

Three main parts to the carb. Top (air horn), middle (main body) and bottom (throttle body). The gasket is between the throttle body and main body.
https://www.rx7club.com/attachment.p...1&d=1306154370
http://intertron.com/ron/images/sv2.jpg
http://intertron.com/ron/images/sv3.jpg
http://intertron.com/ron/images/sv4.jpg

bahlorm 05-23-11 08:45 AM

Ah, I never took the main body off. I only took off the top to get to the floats and jets. So it must be something that attaches to the top. I did just remember 1 thing I forgot to put on though. I don't know what it is or what it even does but it is a rod that connects to the top of the carburetor that is held in with a little pin. Could that be the cause of it or is that just part of the choke?

Yes, I actually put it all back together and also removed my rats nest and plugged the holes. Now the car is running amazing. The hesitation it has is gone, it is idling at around 900-1000, and it has quite a bit more power. And the best thing about it is this car starts up faster than my 95 civic now. But I must of forgotten to attach something because the car will not rev past 4500 rpm. It acts as if its redlining. I was told though it is because my secondaries are not opening up. So I have to figure out what I forgot to do to cause them to not open.

I take that back. I fixed that problem and took it down the road revved it past 5000 with no problems. The was idling at about 1000 when I left. By the time I went half a mile it was up to around 1500 and then another mile it was idling close to 3000, so now that's my next thing to find out. But after the car sitting all night it still started instantly.

t_g_farrell 05-23-11 10:19 AM

Good to hear its running better. You just can't beleive anything a previous owner
tells you. Even good intentioned ones may have it wrong for whatever reason. Only
beleive the car, it can't lie.

74RX4 05-23-11 01:10 PM

This? It is the fast idle arm. It is what makes the idle faster when you pull the choke knob. If it is not hooked up it might be jamming the throttle linkage. Could be your high idle issue.

http://intertron.com/ron/images/carb/c8.jpg

bahlorm 05-23-11 09:13 PM

Yes that is it. I was also wondering if seafoam could also be the cause of it. I put half a bottle in it with only 2 gallons of gas. Which also that 2 gallons of gas was gone within around 10 miles somehow. I know these cars aren't great with gas milage but I just don't see how that is possible. I have checked and there are no gas leaks so it is just burning it all.

Kentetsu 05-24-11 04:11 PM

Seafoam didn't hurt you any, even mixed that rich.

For the increasing idle speed, look to linkage issues. :)

bahlorm 05-24-11 08:26 PM

Linkage issues? Like the throttle cables and everything?

Kentetsu 05-25-11 10:06 AM

..and the metal parts that they connect to at the carb. The moving parts that the cables connect to are called the linkages. If those get loose, are too tight, or assembled wrong, it can cause the idle to not return to where it is set.

However, if the linkages are fine and the throttle plates are closed (looking into the carb) then you are going to be looking for a vacuum leak...

bahlorm 05-25-11 10:07 AM

I actually just found out what was going on with it. The center cable next to the throttle cable was stuck. I got the car to idle from around 3000 to about 1200. Now the damn thing is going back to hesitating and backfiring lol. I find out one thing and another problem pops up, but at least I am learning quite a bit in this process.

Kentetsu 05-25-11 11:44 AM

The hesitation could be related to your ignition timing. Getting your timing set properly should be your next priority... :)

cshaw07 05-25-11 12:26 PM

i just bought an 85. it sat for 14 years, i pulled the carb apart and cleaned the jets and everything, and deleted the rats nest/simplified the carb. starts in about 5 seconds with the choke pulled :)

Kentetsu 05-25-11 08:10 PM

lol, just rubbing it in or what? :)

cshaw07 05-25-11 08:41 PM

A little bit :) i was pumped! But also I added a bit, sorta, hidden in there was to check all your vac hoses/replace them.

bahlorm 05-26-11 08:16 PM

Lol I have checked the vacuum hoses several times to the point to where I ran out of spots that could possibly be leaking (that I know of at least). The car starts up fine now though. I also have a carburetor rebuild kit on the way. I know when I took off the top gasket it came off in several different pieces so I am sure it probably needs it. I am hoping that will take care of the problem and with some help with the info Kent gave me I will attempt to retune the carburetor and time the car after I am finished. It will just be a few days from now.

I also realized in this tutorial on how to remove the rats nest there is a black circular thing that is still attached where the rats nest used to be. I don't know if anyone knows what I am talking about but it is in the pictures on http://maz_tutorials.ten15.net/Tutorial_1.pdf. But from what I understand it is only for A/C and well that doesn't work in this car anyway. I just unplugged all the hoses going from the rats nest to the carburetor and I used caps to plug up all the places they went to on the carburetor.

cshaw07 05-26-11 08:44 PM

i believe the black thing your talking about is like a pcv sorta. its got three hoses that come off of it. your supposed to have it even without ac. you also need the lines coming from the dizzy to the carb spacer.

bahlorm 05-26-11 09:33 PM

Oh well then that may be why or at least is causing some kind of problem. right now every hose that ran to the rats nest got extracted and i capped everything off

Kentetsu 05-28-11 03:48 AM

Did you cap the pipe that runs from the back of the intake to the cat?

And for the lines from the distributor, tee them together into one line, then connect that to the forward nipple at the base of the carb... That will improve low rpm throttle response a bit. :)

DivinDriver 05-28-11 01:09 PM

If you are talking about this thing:

http://img.photobucket.com/albums/v2...f/P3100007.jpg

That's the fuel system vent control valve. functions as a tank vent and crankcase vent valve, all in one. You need it.

bahlorm 05-28-11 04:31 PM

I think that is it drivin. I also didn't realize the hoses running to the distributor was hooked up to the rats nest so whenever I get home I definitely have to check that out.


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