carburator Problem, Please Help!!!!!!!!

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carburator Problem, Please Help!!!!!!!!

Postby h-bot » Thu Oct 03, 2002 8:51 am

From: locomonza_REMOVE_184092_THIS_@yahoo.com

Hi, I have a problem with my holley, Ok the engine is a 350 with a
holley 1850-3.
When the car is at idle the fuel ratio gauge shows me that it is Ok
but when I put the car on heavy load or a cruicing speed like 55 or
60 mph it shows me a very lean condition, I think maybe the power
valve is not the correct for my vaccum, I have 15in at idle in drive
and I have a power valve 65, the power valve may open too late???
could this be the problem???.And this could be the problem of my
engine running too hot???
Please if anybody can help me with this one.
Thank you in advance
Alex




[This is message #355 by user locomonza on Yahoo! Group Buick Skyhawk Owners Club: http://groups.yahoo.com/group/buickskyhawkownersclub ]
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carburator Problem, Please Help!!!!!!!!

Postby h-bot » Tue Oct 22, 2002 5:24 am

From: vegadad_REMOVE_559139_THIS_@yahoo.com

--- In <a href="/group/buickskyhawkownersclub/post?protectID=014075020098221233213097046140166144078150166189251027252142105034177178083061152">buickskyhawkownersclub@y...</a>, locomonza <<a href="/group/buickskyhawkownersclub/post?protectID=091233212180056219138097203245129208071">no_reply@y...</a>> wrote:
> Hi, I have a problem with my holley, Ok the engine is a 350 with a
> holley 1850-3.
> When the car is at idle the fuel ratio gauge shows me that it is Ok
> but when I put the car on heavy load or a cruicing speed like 55 or
> 60 mph it shows me a very lean condition, I think maybe the power
> valve is not the correct for my vaccum, I have 15in at idle in
drive
> and I have a power valve 65, the power valve may open too late???
> could this be the problem???.And this could be the problem of my
> engine running too hot???
> Please if anybody can help me with this one.
> Thank you in advance
> Alex

Alex,
As was discussed in another post I've read, divide your vacuum at
idle by 2 that should be the correct power valve for you. In your
case with a vacuum reading of 15 you should be running a 7.5. You
might try reading through the H-body.org files on carburetor setups.
I believe Robert herndon has some very sound recommendations
including jetting and power valve choices. Good luck with your
project.
john b. (in Virginia)




[This is message #356 by user vegadad on Yahoo! Group Buick Skyhawk Owners Club: http://groups.yahoo.com/group/buickskyhawkownersclub ]
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