ok well i just got my car back up and running...and i noticed that it sputters from 1500 rpm to abot 3000rpm and when im cruising it kinda jerks a littlebit almost like its missing..it never did this befir?..could it be clogged jets? lack of fuel? and how much is a nikki rebuild kit..it the carb is the problem?...i may need to explain a little better about the situation just let me know thanks

 

I had a similar problem after rebuilding my Nikki. I finally found that I had reversed the primary and secondary jets in one of the float bowls, so it was running pig rich at cruise.

Rich

 

i never rebuilt the carb though...i relocated the battery and after theat the car has been running like that

 

I'm having a similar issue. I'm not a mechanic by any means, but not a complete nerd...The engine seems fine in neutral...can rev it up to 6500 rpms no probs... but problems begin when I get into gear and go. If i drive like my grandma and baby the accekerator it'd ok...but if I punch it I get to about 45 MPH and it sputters and shakes then even with the pedal to the floor just starts losing rpms and finally dires. Starts right back up with a clutch pop. There is a pretty noticeable gas smell. Anybody recommend a good guy who knows jis stuff in the NW Chicago burbs?
Thanks for any help.
DD

 

Start with the usual checks. Fuel and air filter, vacuum leaks, ignition. Rebuild kits run 25-40 or so. More details, history and work done might help.

Sounds like the cats are clogged.

 

i have the same problem and btw: i have NO cats so it might not be them . just a little bucking jerky feel when you are cusing , barely noticable but it is deffenatley there

 

DD: fuel filter or pump

 

exact same here no cats its not bad but enough to know its their..also when its cold it likes to do it and sometime it will stall when i take off from a daed stop...it starts right back up but its starting to get anoying

 

just replaced the fuel filter and pump in my car a month ago and it never stoped , that was my first assumption ... however i have a leaking gas tank and i was suspecting fuel contamination , but i add heet every now and again and it dosent seem to phase it

 

Then I'd say carb. Clogged jets? old accel pump?

 

I dont know what you were doing to it that is wasnt running, but based on the info, Id say it sounds like your getting too much air. My car had much the same symptoms except more extreme; Im running a holley. You had to hit the gas just right or it would stumble. Turned out to be a leaking carb to manifold gasget. I replaced it and it runs SO MUCH BETTER! I know air leaks are probally the most over-looked cause of something like this, but they are usualy easy to fix. My new gasget was $5, and now I have a really smooth powerband.

On a second note, I readjusted my float levels, and that made a differance to the similiar effect as well.

 

Almost forgot to ask. Did you reuse any gaskets? That would most likely be the problem. Although sometimes, if your really lucky, you can get away with it. (Im not refering to reusable gaskets, I dont think they even make gaskets that could cause this problem in reusable form)

 

yeah on mine when it is cold you have to hit the gas just right or it will stall , its almost like it leans out or floods out , if it does that it is hard to get it started again . that is after the car is warm enough that the choke goes back in on its own .

 

ya i have to hit the gas just right also just like you guys..but my car wasnt running because i put in a new radiator and relocated the battery ..i did nothing to the carb i didnt even touch it....i'll try a rebuild..tuning it and new gaskets..that should do the job..i hope

 

DONT TOUCH YOUR FLOAT LEVELS!!!!a

 

i wont...im just going to maybe rejet it and but new gaskets and get a new fuel filter

 

Wait a sec here. Are you saying the car was running fine before you changed the rad and moved the batt? If that's the case, leave the carb alone and go back over your work.

 

no i went over it more than once...it seems to work fine...how could any of the things i changed effect cruising speed?

( im on my buddies name )

 

You may have knocked someting loose, not got a ground grounded enough, or you may have multiple problems. Any time one works on a car and someting else changes, always go through the new work first and make dead sure it's right before moving on to change something else and create more problems, i.e., rejetting a Nikki.

 

At least some of these collective issues could be due to a clogged primary jet. I went through that once. This is not too hard to check, if you know how to do it without completely tearing down the carb. This is how: remove the sight windows (front and back) and loosen the jets with the properly sized screwdriver (don't remove, just loosen). Then use a wooden toothpick stuck into each jet to screw it out and remove it. Clean any debris and replace (don't mix up the primaries with the secondaries though). On the other hand, you might be able to run a strong mix of Seafoam (one can to less than 1/8th tank of gas) through the system and get lucky.

 

the car is still doing it i havent really messed with it because of money issues at the moment but i know its not the wireing...but im getting ready to put the car away for the winter and rebuild the entire car so as long as it lasts for another week or 2...im taking out the 12a and swapping it for a 13b...all the wireing interior and exterior is all being redone...but i know for a fact its not the wireing and the ground is in a good spot so its not that...it has to be with the carb for sure

 

Youd be really unlucky if it does the same thing when you fire it up again with the new motor and all)

 

I meant to use that icon. Ok thats it for my 0.44 posts for today!