I got a 750 Vacume secondary Holley. I cant get it to idle right... it just wants to die, my local mecanic says I have a vacume leak but i can not find anything. ??????????
At The Back Of The Pack
Arm chair racerFirst time rider
I got a 750 Vacume secondary Holley. I cant get it to idle right... it just wants to die, my local mecanic says I have a vacume leak but i can not find anything. ??????????
85 ATC350X- weisco 10.25:1, uni, +3 swingarm, 3in. wheelspacers, RAD carrier, 450r muffler
85 Big Red
83 KLT200
82 ATC200
If it aint broke fix it anyway because it soon will be
Worthless, would be a vast improvement.
Arm chair racerJust too addicted
How is the power valve and what stage is it? Are the floats set correctly?
1980 110
1982 250R
1985 200s
1985 250R
1985 350X
Parting out...
1983 250R
1984 185s
PM me for parts
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Arm chair racerAt the back of the pack
Dont just check the vacuum hoses, look all over your block for any fittings that dont have hoses and should. Also check the hose going into your brake booster. Did you use a new gasket when you put the carb on? You can always try the brake cleaner method for finding vacuum leaks. Spray brake cleaner around the carb in short bursts and listen for a increase in idle spead. works better with a stock filter cover so you dont just get residual overspray. When I put the street avenger on my Bronco I discovered numerous vacuum leaks on the intake where hoses were supposed to be but werent. If all that fails let me know, I may have another trick or two.
Barry
There are no stupid questions, but there are alot of stupid people out there that ask questions.
None of us are capable of screwing things up as bad as a group of us.
"NON SIBI, SED OMNIBUS"
First Time Rider
Arm chair racerNew to the board
It is good to adjust one thing at a time with holleys or ya'll never find what it is....
85 Honda Big Red 250 es
85 BMW 318
67 Chevy C10 383 M21
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Arm chair racerFirst time rider
Well i found the leak... when I rebuilt it I forgot the cork seal for the vacume secondary thing. Im gona fix it tonight and see what happens.
85 ATC350X- weisco 10.25:1, uni, +3 swingarm, 3in. wheelspacers, RAD carrier, 450r muffler
85 Big Red
83 KLT200
82 ATC200
If it aint broke fix it anyway because it soon will be
At The Back Of The Pack
Arm chair racerAt the back of the pack
Yep, that will dio it. I did the same thing, after two days of adjusting I felt a little suction on my hand while I was under the hood adjusting. It was a dry rotted vacuum cap that I finished smashing while climbing in and out of the hood. Hope that fixes the problem.
Barry
There are no stupid questions, but there are alot of stupid people out there that ask questions.
None of us are capable of screwing things up as bad as a group of us.
"NON SIBI, SED OMNIBUS"
I'm the one with all the 2 stroke around here!
The day begins with 3WW
another thing about the holley carbs.your air mixture screws tend to carbon up quite a bit on the holleys.take em out and clean them real well.it is typical for streeet driving to cause this.holley carbs are great for w.o.t.street wise they will load up.
Here is where my long useless list of stuff nobody cares about should go...
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Got The Holeshot
Arm chair racerJust too addicted
Congrats-----
Just for Useless info that you will never need again-----Holley power valves S**K
Since your using a 750---Im guessing whatever this vehicle is ---Its been worked.
Power valves dont take kindly to ANY backfire , burp or fart that a modified engine can produce. There are "REDESIGNS" to adress that problem , but they arent foolproof.--- If it backfired and wont idle----Keep that in mind....It will save your sanity.
Buy American! Unless your only option is a HARLEY.
A customer walked in to my shop and Impatiently stated "My car doesnt start, Whats the problem?"I responded with a smile-"Yep that sounds like your problem alright"----
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