Carb Adjusting Aisin (1 Viewer)

[Newrider]

1972 Aisin double barrel...
Anyone have detailed instructions on how to adjust that biznich?

 

[Degnol]

The only real "adjustments" are the idle speed, the fast idle speed (when the choke is pulled out) and the idle fuel mixture.
What symptoms are you having?


Ed

 

[sand rider]

hes getting mad backfiring. were talkin while he was in the cab rev-ing the engine up to about 2k, there were flames lickin out of that baby.... is it possible that a bad valve or spring or lifter could not be closing therefore letting the explosion out of the engine back into the carb?

 

[Degnol]

If backfiring outa the carb.....to lean....carb plugged with crud=rebuild.
If backfiring outa the exhaust.....running waaaay too rich =carb rebuild. Well maybe float stuck, needle and seat bad, but rebuild anyway.
No adjustment for either, sorry.
Ed

 

[Newrider]

yea its backfiring...but this is a new carb. there is nothing wrong with it...do you think the backfiring out of the intake and exhaust could just be because the carb is out of adjustment?

 

[Newrider]

oh by the way john, sandrider...i love your signature lol

 

[65swb45]

More often than not when there is backfiring out of the carb, the carb is the VICTIM, not the culprit.

Check timing and compression [for valve adjustment]

 

[Newrider]

The compressiong is good just did a check little earlier and the timing was just adjusted by a mechanic. so they should be ok. Do you think it could simply be the cvarb and it not being adjusted right??

 

[andrewfarmer]

Never assume because 'it was done by a mechanic' that's it's been done right...

 

[PabloCruise]

Never assume because 'it was done by a mechanic' that's it's been done right...

Right! Bust out the timing light and check it yourself...

Have you set the valve lash recently?

How do you know this is a new carb - and how can you say there is nothing wrong with it - details please...