cat thirty carb ?

reply retracted

Jumping the Gun a little on your reply about no one caring?
Not everyone has Gas Tractors nor does the 3 or 4 guys I know for certain that have 30's are on everday.
Seen as 8:15pm till this morning isn't even a full 24hrs.

[quote="drujinin"]Jumping the Gun a little on your reply about no one caring?
Not everyone has Gas Tractors nor does the 3 or 4 guys I know for certain that have 30's are on everday.
Seen as 8:15pm till this morning isn't even a full 24hrs.[/quote]

just bein humurous. no need to be affended. finally got pretty weather and i want to get out and drive tractor some and adjust on it before weather disappears. thats what the rush is. had ALL other thirty questions answered within hours of post. some within minutes. figured i could get quick help on this problem as well. no big deal either way. apologies to all who are affended and will be affended in the future. regards

Hi Eric,
as far as I recall the Bosses Thirty adjusted as per any other carb with the high and low speed circuits seeming to be independant.

Can only think there maybe an air/fuel leak internal.

If either/both the carby body and float chamber body faces are warped or similar then you could possibly get crossover between the circuits across the gasket faces---note all the passages running next to each other in the scan below.

Also be aware that the idle screw is an air bleed adjustment and therefore this makes it appear to work back to front---in to richen and out to lean.
Cheers,
Eddie B.

[quote="edb"]Hi Eric,
as far as I recall the Bosses Thirty adjusted as per any other carb with the high and low speed circuits seeming to be independant.

Can only think there maybe an air/fuel leak internal.

If either/both the carby body and float chamber body faces are warped or similar then you could possibly get crossover between the circuits across the gasket faces---note all the passages running next to each other in the scan below.

Also be aware that the idle screw is an air bleed adjustment and therefore this makes it appear to work back to front---in to richen and out to lean.
Cheers,
Eddie B.[/quote]

thank you edb, that is something i did not realize. i am gonna take the carb back apart and check that. with that white metal float bowl, warp is a possibility. have a good afternoon, eric

Thinking a little further.....Is it possible that valve adjustment could help solve your idle issue?

good luck

Biggastractor

[quote="biggastractor"]Thinking a little further.....Is it possible that valve adjustment could help solve your idle issue?

good luck

Biggastractor[/quote]

yes, you are correct. they are alittle on the loose side. noticed that when i had valve covers off but i dont know what to set them to while tractor is hot. i am sure if i dig a little deeper on the forum that someone somewhere has mentioned as to what they should be set at. thanks biggastractor.

sometimes a weak or broken valve spring will make lots of difference.
Check them out first thing. Ron

[quote="hiwide15"]sometimes a weak or broken valve spring will make lots of difference.
Check them out first thing. Ron[/quote]

i will do that. thanks ron.