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Author
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Topic: Alex, still having Holley issues
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 04-29-2003 03:16 AM
   
I have leaned the carb out, thought I had the problem solved...no not even! So I enrichened the carb no differance. The float level is set at the sight plug would it be worth a try to lower the float level or not? Next step is to install a rochester, weber, or even a carter!
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Mpcoluv
Gearhead Posts: 1144
From: Charlotte NC usa
Registered: Apr 2001
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posted 04-29-2003 07:55 AM
Have you looked down in the carb with the engine running?
Is fuel dripping from the boosters at idle?
What is your fuel pressure?
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 04-29-2003 03:22 PM
I have looked down the bores after driving and parked for a minute or two, per Alex's recomendation. It looks wet but not realy bad. I will see if it drips while running though. The veturies are wierd they look like wagon wheels. Economizer booster is what Holley calls em. So it will be hard to see drips. I have no clue what the fuel pressure is. It has the stock mech fuel pump. So I shouldn't have too much pressure. It just drives me nuts! Never have a single problem when I first drive it. Only when I drive park and then drive again. And even then it has days when it's good and days when it's bad. Theres no consistency at all!
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Mpcoluv
Gearhead Posts: 1144
From: Charlotte NC usa
Registered: Apr 2001
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posted 04-29-2003 04:43 PM
quote:
Originally posted by SundanceKid:
I have looked down the bores after driving and parked for a minute or two, per Alex's recomendation. It looks wet but not realy bad. I will see if it drips while running though. The veturies are wierd they look like wagon wheels. Economizer booster is what Holley calls em. So it will be hard to see drips. I have no clue what the fuel pressure is. It has the stock mech fuel pump. So I shouldn't have too much pressure. It just drives me nuts! Never have a single problem when I first drive it. Only when I drive park and then drive again. And even then it has days when it's good and days when it's bad. Theres no consistency at all!
Sounds like you might have a particle or something floating around in the metering block, if the problem comes and goes.
Worst case, pull both bowls and metering blocks and blow them out with an air nozzle....
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Moneymaker
Administrator Posts: 21725
From: Lyons, IL, USA
Registered: May 99
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posted 04-29-2003 06:59 PM
When I was turning wrenches at a dealer years ago, we would occasionally get some cars in from the high altitude states for service. I would notice that everyone of them had a device known as a "Fil-to-reg.
It was a fuel filter adjustable fuel pressure regulator. Upon investigation I learned that high altitude vehicles were leaned way down and fuel pressure was reduced to 3.5-4 lbs. Further investigation into the parts books taught me that high altitude cars had different carbs and fuel pumps all together.
I would try lowering the float a tad.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 05-01-2003 02:57 AM
Alex, That would certainly apply here. That was along my thinking as well. I just didn't know if my thinking was correct. Mpcoluv, It's a 2barrel I just recently rebuilt. If you know me you know I'm anal. Unless there were particles between the new filter and line. It only does it on the second startup. It honestly feels like vapor lock but the line and carb a cool to the touch. I will lower the float and see what I get.
Thanks for the help, keep the flow of thoughts comming.I if you can think of anything else let me know. Mucho Gracias
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Tom G
Gearhead Posts: 314
From: Bethlehem, Pa USA
Registered: Nov 2001
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posted 05-01-2003 04:20 PM
Is it a motorcraft type screwin filter on it> I have had problems with that type. I replaced it with inline hose type no further problems. This was on a 2 barrel cleveland and a 351M motors.------------------
67 Mustang F/B 302 GT-40X aluminum head roller motor 5 speed. Body shop project soon. 03 Focus ZX3 bassani exhaust wings west spoiler (Arrest ME RED)
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 05-02-2003 02:52 AM
I always ditch the carb and pump filters and use an inline filter too. I have been real busy lately.
Probably won't be till this weekend until I give the float adjustment a try. Anyone have anymore suggestions before then?
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 05-03-2003 06:51 PM
The carb is dripping from the pasenger side booster at part throttle but not at idle. The Driver side seems to be completely automizing. I also noticed that the accelerator pump is dripping for a few seconds too. I assume that is normal. I dropped the float level 1/8" and the change made no differance to the dripping. Air bleeds? I just rebuilt the carb and used sergical caution in getting it clean?
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Moneymaker
Administrator Posts: 21725
From: Lyons, IL, USA
Registered: May 99
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posted 05-05-2003 11:49 AM
What brand of needle and seat?
I don't like the Borg Warner style for Holleys.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
MCA member# 53321
NHRA and IHRA SS/LA National Record Holder '00,'01,'02,&'03
First SS/MA in the TENS!
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Professional Manwhore
The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 05-05-2003 05:08 PM
Alex, it was a Holley brand rebuild kit. Here's something interesting though; After I lowered the float level the dripping only happens on the driver side over approx 3000-3500 rpm. The carb still hessetates upon second start-up. I cleaned the air bleeds using carb cleaner and compressed air. No change. I then started it up and it was hessetateing worse then ever so I raised the float level above the sight plug bottom. This seems to have cleared the hessetation up, but who knows if it will last.
Now with the float raised the idle is slower and it tries to die when cold at stop lights. I raised the idle and the dieing at lights has stopped. I've never worked on such a finicky carb ever! At this point it's "Drive it a week and see."
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 05-09-2003 01:11 PM
Ok, we've been having alot of rain and the humidity is super high. The carb runs great but likes to idle at 200 RPM or dies at stop lights! Are Holleys that sensitve to humidity that the idle will drop 600 RPM? I swear to ya I don't usualy have a single problem tuning carbs!
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 05-11-2003 08:02 PM
God I love this carb  Humidity had nothing to do with it. The carb just up and desided to idle lower all of a sudden. No reason it just does now? So I raised the idle and for the time being it is running great again.
For how long who knows? [This message has been edited by SundanceKid (edited 05-11-2003).]
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SundanceKid
Gearhead Posts: 1137
From: UT
Registered: Feb 2001
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posted 05-13-2003 02:09 PM
Um,....yeah that didn't last long! The second start-up stumble is back.
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