Hi Guys

I have a problem with my b210 , it does not idle smooth, if i keep the idle higher it will stay for sometimes and suddenly rpm drops and engine stalls,when idling its rpm goes up and down a little , i have cleaned the whole carburetor Everything looks good including float level vacuum hoses etc , while driving no knocking backfiring or miss, it goes perfect but cant keep idle unless keep the leg on the gas pedal little higher than normal,what do you guys suggest me to see, is it my carburetor door which is not closing well ?if so how can i bench test it ?

thanks
regards
sumith

Have a look in the window on carburettor see where your fuel level is at When running and not running. Sounds a little like your float level needs adjusting.
Sorry just reread that you said float level looks fine.

You said you cleaned the carby. Did you pull it apart to do so ?
If so have you set the idle and mixture to base settings

Have you checked the timing it may be a little retarded.

Also check for vacuum leaks. A piece of hose in the ear is a great tool for this.

Hi Guys

Just went a round and pulled the plugs to see the condition it looks good to me, i have attached a image

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  plugs.jpg (55.75 KB)


  carb.jpg (50.34 KB)

If you're running points ignition, check the spark, gap and whether or not they're burnt out.

This can definitely cause idle problems
Quote:I'd start with fixing that

Hi, sumith I remember you..! probably idler control valve.

Hi Guys

i gave it a one more tune up again to see, it went perfect on that test tour , i will check it
one more time to see how it works if not i will definitely fix the carb door , and also how can i know whether my engine mounts are worn out ? i feel my engine shakes a little fast on idle

@ heratha15 Hi how are you doing ?

thanks
regards
sumith

Thank you Sumith I am fine I have the same problem with Nissan Vanette A15 just after carb clean and tune up engine vibrate on idler I don't know how it comes suddenly after clean up.

Hi

Could be mistakenly used the wrong Jet , once i had a similer issue on my b310 to see i have interchanged master and secondary air bleed valve on the carb by mistakenly

thanks
regards
sumith