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09-21-2006, 07:32 PM
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#1 |
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Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Timing and smoking issue
Hello,
Just replaced a Q-jet and stock intake with a Holley 1850-3 (600CFM) and Edelbrock performer intake (2101) on my stock 327 4 speed (also added HEI). It's a used carb so I am looking to rebuild it but... It surges at idle and is smoking like crazy now! I have heard that a vacuum leak could cause the surging but the smoke too? I set the timing to all places and it does the same, so it's back to TDC. (what's the best timing for this?) Should I rebuild carb then try again or search for a leak (best method?) The mixture screws on the Holley seem to do nothing either. Thanks for the help... ______________________________________________________ My Garage: 1968 SWB K-10 2005 Tahoe UH-60A/L Helicopter FLY ARMY! 
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09-21-2006, 07:37 PM
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#2 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Timing and smoking issue
black smoke could be way too rich
white smoke bad seal of intake manifold and your leaking coolant into the intake ports that rubber fuel line is the classic way to burn your truck to the ground
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 09-21-2006 at 07:39 PM. |
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09-21-2006, 07:49 PM
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#3 |
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Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Timing and smoking issue
mostly black smoke....mixture screws don't change anything so I figure a rebuild couldn't hurt. Fuel line is only temp, works fine until I put truck on the road...just don't get it near the exhaust! thanks...
______________________________________________________ My Garage: 1968 SWB K-10 2005 Tahoe UH-60A/L Helicopter FLY ARMY!
Last edited by msgross; 09-21-2006 at 07:49 PM. |
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09-21-2006, 11:04 PM
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#4 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
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Re: Timing and smoking issue
Inspect rubber fuel lines,you`ll be fine.4" or 24".the same risk.There must be a reason they make fuel-rated hose.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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09-22-2006, 08:12 AM
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#5 |
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Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Timing and smoking issue
It's fuel rated rubber hose....
I am still trying to find out info on the surging and smoking...should I start with the carb and rebuild it? Then look into the intake? ______________________________________________________ My Garage: 1968 SWB K-10 2005 Tahoe UH-60A/L Helicopter FLY ARMY!
Last edited by msgross; 09-22-2006 at 08:13 AM. |
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09-22-2006, 11:58 AM
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#6 |
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Dork For Days
Join Date: Aug 2005
Location: Dallas
Posts: 407
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Re: Timing and smoking issue
Blown power valve?
The mixture screws not working sounds like you've got the throttle plates open too far, possibly compensating for the extra richness (mmmm, sounds like one of those Pilsbury commercials ---- sorry, it's lunchtime and I'm hungry!  )
__________________
1972 C20, 402/700R4 - My first classic truck, bought in September 2005. 85% transformed from "Farm" to "Cool" status!  1970 Dodge Challenger 440, 4sp (my other toy) 12.67 @ 117 MPH, with a pathetic 2.022 60' 2007 Dodge Charger SRT-8 2008 Cadillac CTS All-American garage, baby! |
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