vxturboxv

iTrader: (2)

Starts fine when cold. And if I shut it off once warmed up and let it sit for couple min or so it will start right back up. Let is sit for 10-15 min and I have to crank the bastard forever? How can I fix this?

I noticed in the manual theres a hot start solenoid. How does this work? What else can I do to improve hot starts?

vxturboxv

iTrader: (2)

Looking a little closer I noticed that there is a large puddle of fuel sitting on top of the secondary's with the car shut off? Somehow fuel is leaking into teh carb when the key is off. Could anyone show my how to fix this? Isn't there a solenoid that is supose to shut off fuel when the car is off? Where is this?

I had also read that it can be some gummy crap stuck in the needle floats? Does toluene of like fuel cleaners fix this or do I need a rebuild?


Thanks

Mazda12AGS

I had that same problem. I rebuilt my carb and it hasn't done it since then.

vxturboxv

iTrader: (2)

Where did you get it done? Or did you just rebuild it yourself?

Mazda12AGS

I just bought the kit and did it myself. It was pretty simple

vxturboxv

iTrader: (2)

Well I didn't fix the problem 100%, but its at least 75% better. And I didn't rebuild the carb (next step). I had not completly plugged off the alitiude compensater valve. Thants what this was by the way...



Also I had removed the richer solenoid and vac switch that controls it. oncew I hooked these back up it seems to not leak fuel any more. And almost always starts up after a bit of cranking. Also the huge amount of smoke that the car use to bellow is just a little belch of smoke now. So I think my next step i sa carb rebuild and I should be fine. I just wanted to inform everyone doing the rat nest removal to watch for those 2 things.

Kentetsu

Ahhh, the infamous solenoid. That must be hooked up or you will have mucho problemo!

vxturboxv

iTrader: (2)

The car, although better, still has crappy hotstart proble. I doubt this has to do with me needing a carb rebuild because before the rat nest removal I never hasd a problem. Anywhere other direction someone can point me in? The car always starts but I hae to crank the crap out of it and then I smoke from all the extra fuel. What else coud be causing the carb to leak fuel?

Thanks

vxturboxv

iTrader: (2)

I've been over it a bunch of times I don't seem to have any loose vac lines etc. I just don't see how fuel is getting in. I had recently drilled a hole in my gas cap because it always seemed like it was under a huge suction. Could this be part of my problem? I plugged the hole back up and don't reallynotice any difference. Anyone else hae this problem? It's driving my crazy!

SparkienSuggah

well, fuel is leaking from the secondary jets onto the throttle plates, which would then leak down into the manifold making the starting mixture very rich (which would blow great smoke on startup when it did catch)

you can take off the air horn and set your floats a little higher (lower when the air horn is upside down) and clean up the needle valves to keep it from leaking before the rebuild.
the hot start solenoid is next to the brake/clutch master cylinder, and advances the throttle through its long *** cable while hot cranking. check to see if its still conected electrically, and moves freely (with a whirr whirr noise) and check the cable that goes to the carb.


or go fuel injection.

vxturboxv

iTrader: (2)

I tried just pressing the pedal slightly to simulate the hot start assist. This doesn't help. Looking thought the float sight glasses the levels seem to be right at the middle of the glass. I would buy into the carb rebuild thing if my car was hard to start before. But was not. Hot starts were short and easy. It's only after my Ratnest remoal that I have this problem. I have to have removed something that is letting fuel into the carb. Just can't figure out what.

ChunkyMonkey

iTrader: (1)

Isn't the solenoid supposed to be hooked to the throotle vacuum/switch? I don't have my write up from Rx7Carl with me....But my car has had the same problem since I did my removal....Idiot me connected the above mentioned hose to some a/c valve, lol......Can you show me where the line that comes from the top of the white solenoid(only when left when nest removed) is supposed to go?

Kentetsu

The solenoid that I am talking about is located on the carb close to the alternator. It has a single wire that plugs into it. If this is not connected then you will have the issues described above...

vxturboxv

iTrader: (2)

Found my problem... I had capped off this line port. (see pic) Thats a no no. It's the vent that lets the fuel drain back to the tank when you turn the car off. I was getting the siphon effect and gas would drip in the carb and flood it on hot starting. Ran a hose back to the air cleaner on that port and no more problems.

I don't remember if the rat nest removal guide I read rold me to cap off that port or not. If it did it was wrong.

Anyway hope this helps some.

zduford

the return fuel line is suppose to be going to that is in not ???:S:S

Stevan

iTrader: (17)

That is your bowlvent, the solenoid your'e talking about is the bowlvent solenoid.
Here,

vxturboxv

iTrader: (2)

Right, but with the vent capped off that sol doesn't do anything right?

Either way I don't think it matters if the vent port is hooked up to the filler tube vac source or straight to the air box does it? Or does it need vac for some reason? If so why? It still lets the fuel drain back into the tank if it's vented to atmosphere right? Not trying to argue just trying to understand! Thanks for the diagram it's 10 times easier to understand than the 28 page picture write up.

Now that I have vented the port I circled in my pic the car doesn't continue to dump fuel into the carb when I shut it off now. And I don't have anymore problems with hot starting.

And no the return line and suply line are the two rubber hoses going to and from the carb.

zduford

in your other post all that i can see is just the one line...un less the one on the far off screen is the return..