Ok, so earlier today I was driving around in my SA. The car felt like it was bogging in every gear. It would have good power up until midrange and the just fall on its face. Well anyway, driving home, I stepped on it to pass this guy and of course it bogs. Well then it picks up like usual, alot of power, but when I let of the gas to shift it was reving by itself. I pulled over immeadiately and turned the car off. I started the car back up and it revved by itself to 6500 rpm. Finally after turning off and on about 4 times, it finally quit. Any ideas about either problem, the bogging, and the self-revving would be great. Thanks!

 

Check the nut that holds the linkage onto the back of the car. Check for any binding in the throttle cable.

 

also check your fuel filter becouse if it gets clogged up it will make it feel like it falls flat on its face once you get to about 4k.

 

Check for binding in the throttle linkage, make sure all cables are hooked up properly (throttle, hot start if you have it, choke/fast-idle) and make sure your secondary throttle return spring is set properly (search this section, there are pictures somewhere).

Jon

 

+1 on what they all said also for the bogging at high rpm, if you still have catalytic converters, thats probably your culprit there too but I would change the fuel filter before that just because its cheaper. Also pouring a bottle of Seafoam in the tank wouldn't hut anything neither, but clean things up.

 

I don't have cats anymore, and I just replaced the fuel filter about 2 weeks ago. So would binding/ inop throttle cable cause the bogging and self revving?

 

ya it could also be your secondaries not opening too ... you should post a few pictures of the linkages to see if we can spot anything for you perhaps.

Also about the fuel filter, if you run the car on close of an empty tank alot then it can clog it easily too. Worth taking a quite look at it. Was it suddenly that it did it or over time?

 

well its been bogging for a few days now, but the self revving thing just happened. I mean I'm stumped.

 

Also cheep, get a 20oz pop bottle and do a fuel flow test.

you need to jumper to connector under the dash,

 

You guys aren't thinking logically. The self revving is actually a good thing, because it really narrows down the possibilities as long as the two issues are related. The only thing that could cause both issues is carb related, and most likely part of the control system (linkages, cables).

Your work is 95% done now, so go check out the linkage and take some photos if you can. Another part of the linkage you're going to want to verify is referred to as the "teeter totter". You can run a search for that term and get back some photos showing the correct position that it should be set in.

Good luck...

 

^^^^Is the hot start assist cable still connected? If the cable is removed and the lever on the carb is not, the end of the lever will drop below the Shutter valve and can hold the throttle open.

 

^^^ +1 on disconnected hot-start lever jam; it's been reported a couple times here.

Also possible that the throttle return spring let go a few days ago (would cause the teeter-totter to trip, and therefore the bogging) and then the linkage started binding or the teeter-totter spring has malf'ed, causing the lack of throttle return.

The "teeter-totter" is acutally a secondary return spring system for the throttle; it's whole purpose is to make sure the throttle doesn't run away if the main spring breaks.

Does the gas pedal still spring back up from the floor when you take your foot off of it? If no, then the above is likely. If yes, the issue is almost certainly in the carb linkages.

 

So I peeked under the hood today and found out my teeter-totter was disconnected. I believe this to be the problem because the self-revving and bogging started at the exact same time.