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Fire out the carb

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  #31  
Old 04-26-2011, 03:15 PM
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Hey lavatan, I did the same thing on my carb, hehe.. Glad you figured it out. Once you get your carb set where it will idle, we can attack the timing issue, if that is still a problem.
 
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  #32  
Old 04-26-2011, 03:55 PM
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Originally Posted by lavatan
Thanks everyone for their help.

cj06, I didn't get an RV cam. The cam I got was a CompCams 34-225-4 with new springs and retainers. With all the testing there is more than enough clearance between the piston and valves. Here is a link to the cam sheet: 34-225-4 - High Energy

As for the carb, I was doing a completely newb move. I was adjusting the floats up instead of down. This is what was causing the flooding issue. D'oh!!!

I'm going to drain the bowls, remove the carb and adjust the floats...
Kinda hard to do a wet adjustment when you can't get the truck to idle, isn't it?
 
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  #33  
Old 04-26-2011, 08:34 PM
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Tell me about it. Anyway. Got the carb off and the gasket tore. It was soaked in fuel. So I gotta get a new one before going forward. *sigh* oh well. The bowls were way off and I adjusted the needle to 1 1/2 turns out. Hope that gets it. I'll let you know tomorrow.
 
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  #34  
Old 04-26-2011, 08:47 PM
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Hey guys, is there any danger that too much fuel might of washed down into the oil?
 
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  #35  
Old 04-26-2011, 09:04 PM
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Quick question kind of off topic. The PCV connection on the carb; can that be connected to the elbow in the oil filter cap?
 
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  #36  
Old 04-26-2011, 09:29 PM
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Originally Posted by lavatan
Quick question kind of off topic. The PCV connection on the carb; can that be connected to the elbow in the oil filter cap?
Many come from the factory that way; how is yours hooked up right now?

The PCV systems sucks out blow-by gases, and that volume is replaced by filtered air (which is allowed in from a different connection).
 
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  #37  
Old 04-26-2011, 10:26 PM
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That answers that question. I'll get a new PCV valve and grommet. Anafiel, I certainly hope not. That would so not make my day! I'll get back to you guys tomorrow.
 
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  #38  
Old 04-28-2011, 08:11 AM
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Well, I adjusted the floats and the mixture screws. It seems to want to idle a little longer but still is very lopey (is that a word). It will idle like that for about 2 minutes and then die. I have been getting closer. I'm going to wait until this Sunday when my dad can help me adjust the carb while the truck is "running" to see if we can get it to idle more smoothly.
 
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  #39  
Old 04-29-2011, 02:54 PM
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I was wrong about the cam. It is an RV cam. Comp Cams 34-223-4 with matching springs (926-16) and lifters (832-16). I also noticed that it's leaking oil out the back. Hope it's not the rear main seal....
 
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  #40  
Old 05-02-2011, 08:48 AM
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Well, my dad was over to take a look and we determined that the carb is not allowing a good mix of gas/oxygen. He attempted to tune the carb while the truck was running and we could not get any improvement at all. I think I'll buy a new carb and see what happens. I think I'll get an edelbrock this time.
 
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  #41  
Old 05-04-2011, 02:10 PM
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I decided to opt for getting another rebuild/renew kit and see if a gasket had a minor tear or something else causing the flooding. If this doesn't work then I will end up buying a new carb.
 
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  #42  
Old 05-04-2011, 02:21 PM
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Holley carbs will warp the base plate , and it will act as a big vacuum leak ! some holleys came with 4 screws on the base and 6 holes for screws if i remember right ! if yours has only 4 screws in the base then put the 2 missing one in and it should help !
 
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  #43  
Old 05-04-2011, 03:07 PM
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Thanks for the info cj. There are 6 holes and 6 screws. They are all in place. After the rebuild tonight I am going to vacuum test the manifold. Hope there's no leak. How many inches should I be looking for on this size engine with a slightly better than stock cam?
 
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  #44  
Old 05-04-2011, 03:15 PM
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when it comes to the vacuum part i can not remember as if i here the word vacuum i usually leave , wife hates me for leaving it up to here !
 
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  #45  
Old 05-04-2011, 08:38 PM
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Originally Posted by cj06
Holley carbs will warp the base plate , and it will act as a big vacuum leak ! some holleys came with 4 screws on the base and 6 holes for screws if i remember right ! if yours has only 4 screws in the base then put the 2 missing one in and it should help !
They also warp the metering blocks.

How to Spot Warped Holley Metering Blocks - Corvette Forum
 
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