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Author
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Topic: Bad coil, or carb ?
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Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-14-2005 01:15 AM
   
I changed the carb and my car still does the same thing. It will start and run but after running for a few seconds or longer. It will start to idle down like it's way to rich. If I go to take off it acts like it's loading up and then runs just fine. Once I idle it agian it goes back to loading up or acting up at idle or when cruising real slow. It did this with my old 600 holley which was a little fat. And the rebuilt 700dp I just put on it. I changed the plugs they were all real black way to rich. Even with the new plugs it does the same thing.I've changed the PV many times. I've had the carb apart 3 times to clean it out. I can't find any leaks. ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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steve'66
Gearhead Posts: 9104
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 01-14-2005 01:31 AM
Plug the power valve and see if it goes away...SteveW
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Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-14-2005 01:33 AM
Ok, still think it's the carb ?------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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JCQuinn@work
Gearhead Posts: 850
From: Lakewood, CO, USA
Registered: Jun 2001
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posted 01-14-2005 10:39 AM
Something tugs at my memory and says "lower the float level". I think it's because that worked for me in the past.How's the weather been? John
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bud4660
Gearhead Posts: 518
From: Mesquite, Tx. M&M #2925
Registered: Apr 2003
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posted 01-14-2005 11:16 AM
Hey Ron. There is two gaskets that fit between the metering block and the main housing. One has a big cut out. One has a little hole that lines up with a hole in the metering block. If you use the wrong one, gas runs out the bottom of the carb. Dont ask how I know this......  Also might check the float level and see whats going on there. [This message has been edited by bud4660 (edited 01-14-2005).]
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Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-14-2005 01:22 PM
Thanks, I keep lowering the floats and little at a time. I have site plugs and I can see the gas just reaching the plug. Should I pull out the site plugs out. And set the floats with out them in, or just keep on going lower to where I can't see the gas in the site plugs at all ?
John, it getting better, well at least snow wise. Now it's just darn cold. It was 7 degree's out last night.
------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-14-2005 02:14 PM
Ron, are you using and air cleaner assembly of some kind?
If so, have you tested without it installed?------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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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Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-14-2005 02:44 PM
quote:
Originally posted by Moneymaker:
Ron, are you using and air cleaner assembly of some kind?
If so, have you tested without it installed?
Yes I did try it with it and without. And it doesn't make a difference. The thing that stumps me the most is it was doing the same thing with the other carb too ? How could two different carb cause the same effect ?
I've used PV from 4.5-6.5 with no difference. ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-14-2005 02:55 PM
OK then, it's simple.
Do you have a fuel pressure regulator?------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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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Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-14-2005 03:08 PM
quote:
Originally posted by Moneymaker:
OK then, it's simple.
Do you have a fuel pressure regulator?
No I've never had one ?
I did notice that once in while the squiters will drip alittle, which got better with lower floats.
------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-14-2005 03:22 PM
I thought not.
Get a regulator and guage. Cheap one from Summit is fine. I like the line with the guage built in myself for street cars.
Set the regulator to 5-6 lbs max at idle and your problem will be solved.
If you can locate a product called Fil-to-reg, that would be better yet. It is a not to sophisticated, numbered adjustable fuel pressure regulator with a clear filter.
Cheap and easy to install.
I used to swear by them.
You will need a 3/8 one if they are still available.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
bud4660
Gearhead Posts: 518
From: Mesquite, Tx. M&M #2925
Registered: Apr 2003
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posted 01-14-2005 03:59 PM
Ron if you have a NAPA store close. Call them and see if they have a 730-2368 regulator. Thats a dial type 3/8". It goes from 1 to 5 psi with a max of 10 psi in.
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-14-2005 04:25 PM
There ya go.  ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-14-2005 05:04 PM
Would the holley # 12-803 work just like the Napa one ? It's says it's 4.5-9psi ?
I have a few summit gift cards. That would help out right now with the $$$. Unless the napa model is better.------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-14-2005 05:08 PM
Sure, the Summit one will function fine.
Just more work and small parts on your part.
Fittings, hose, etc.
The NAPA one shouldn't be more than $10-$15.
------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-14-2005 05:12 PM
http://store.summitracing.com/default.asp?target=esearch.asp&N=110&Ntk=KeywordSearch&Ntt=fuel+pressure+regulator&x=12&y=6------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
|
posted 01-14-2005 05:19 PM
Called Napa they no longer carry that brand or model. The new one is #2517 $20.19 it comes with fittings for 1/4 - 3/8's line. The holley model #12-803 from Summit is $25.88.------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics [This message has been edited by Fastymz (edited 01-14-2005).]
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-14-2005 06:26 PM
The Holley unit does not come with fittings or a guage.
You will spend over $50 by the time you are done.
The $20 deal from Napa is right up your alley.
Set it at 5 lbs and go. ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
|
posted 01-14-2005 06:29 PM
quote:
Originally posted by Moneymaker:
The Holley unit does not come with fittings or a guage.
You will spend over $50 by the time you are done.
The $20 deal from Napa is right up your alley.
Set it at 5 lbs and go.
Thanks Alex,Done deal, I'll get the Napa one. And let you know if it helps.
I won't ask again until I try it.
I'm getting better, not even one email this time. 
------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-14-2005 06:38 PM
Make sure the new Napa deal is adjustable and marked as such before you buy it.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
|
posted 01-14-2005 08:29 PM
quote:
Originally posted by Moneymaker:
Make sure the new Napa deal is adjustable and marked as such before you buy it.
Ok thanks again ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
|
posted 01-19-2005 06:52 PM
Ok I got the one from Napa today. Now I see what you guys were talking about. It's real easy to hook up and adjust. I just need to make some room in the garage. Once I get it all hooked up and tested I'll let you guys know if it works. It doesn't look like a high flowing unit but it should do the job. ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
|
posted 01-19-2005 07:27 PM
 ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
|
posted 01-19-2005 08:46 PM
quote:
Originally posted by Moneymaker:
Sorry but I have to ask, do you think it will hurt fuel flow above 5000rpm ? ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics [This message has been edited by Fastymz (edited 01-20-2005).]
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
|
posted 01-19-2005 11:02 PM
No Ron.
Your set up does not move enough air quick enough to run the carb out of fuel.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
|
posted 01-20-2005 07:50 PM
quote:
Originally posted by Moneymaker:
No Ron.
Your set up does not move enough air quick enough to run the carb out of fuel.
So your saying my car doesn't SUCK enough ? ------------------
SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
|
posted 01-20-2005 08:38 PM
 ------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 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
IP: Logged |
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