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Rochester carb. adjustment
#991154 Sat Dec 07 2013 03:04 PM
Joined: Jun 2009
Posts: 714
F
'Bolter
My '48 Chevy 1/2 ton p.u. is powered by a rebuilt 1955 235 c.i. engine. I would like to increase the idle speed--a rebuilt Rochester carb. is in use. Can someone offer tech. tips to do this? Thanks!

Re: Rochester carb. adjustment
fonz8261 #991168 Sat Dec 07 2013 03:56 PM
Joined: Aug 2012
Posts: 1,743
V
Shop Shark
On the drivers side of the carb towards the bottom is the idle speed adjusment screw. It is on the linkage. turn it CW to increase rpm and CCW to decrease rpm.

You want to set your idle between 450 & 500 rpm.

Good luck
Dave

Re: Rochester carb. adjustment
fonz8261 #991185 Sat Dec 07 2013 04:55 PM
Joined: Oct 2010
Posts: 1,257
L
Shop Shark


- Lonnie
My '54 3104
Photos that I have shared on Stovebolt via PhotoBucket are no longer available. Please contact me if you want a photo from an old post.
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Re: Rochester carb. adjustment
LonnieC #991232 Sat Dec 07 2013 09:00 PM
Joined: Jun 2009
Posts: 714
F
'Bolter
As always, the advice + information found here is really appreciated! THANKS!!!

Out of curiosity, do the Carter carbs. adjust the same way?

Re: Rochester carb. adjustment
fonz8261 #991244 Sat Dec 07 2013 09:45 PM
Joined: Jun 2004
Posts: 8,527
W
'Bolter


Out of curiosity, do the Carter carbs. adjust the same way? [/quote]
Yes. All carbs have an idle speed screw, although the location may vary.


They say money can't buy happiness. It can buy old Chevy trucks though. Same thing.

1972 Chevy c10 Cheyenne Super
Re: Rochester carb. adjustment
fonz8261 #991256 Sat Dec 07 2013 11:29 PM
Joined: Jan 2010
Posts: 4,673
D
Shop Shark

Re: Rochester carb. adjustment
DADS50 #991258 Sat Dec 07 2013 11:45 PM
Joined: Jun 2009
Posts: 714
F
'Bolter
One must always ask/phrase the question correctly; my question must have read like a real dolt! I do understand the idle speed adjustment screw on a carb. As I am not familiar with the Carter carb., I thought this posting might help those with a Carter carb. as well. grin

Thanks again for all the good info.


Moderated by  Woogeroo 

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