Help with Holley 750 DP

Thread Tools
 
Search this Thread
 
Old September 14th, 2013, 11:07 AM
  #1  
Registered User
Thread Starter
 
Beob's Avatar
 
Join Date: Nov 2009
Location: Long Island, NY
Posts: 548
Help with Holley 750 DP

Recently my engine started running like crap, stalling, rough idle and hard starting. Then discovered fuel dripping out of secondaries with engine running and continues to drip with engine off until fuel pressure reached 0. Carb was supposedly rebuilt 2 years ago. Going to pull carb off now and open it up, any advice what to look for would be appreciated. Thanks, Rob

Last edited by Beob; September 14th, 2013 at 11:15 AM.
Beob is offline  
Old September 14th, 2013, 11:34 AM
  #2  
Registered User
 
chadman's Avatar
 
Join Date: Mar 2010
Location: Wakeman, OH
Posts: 1,065
From what you have described my initial thought is a stuck needle and seat on the secondary. The second thing I would suspect is float level adjustment.
chadman is offline  
Old September 14th, 2013, 12:02 PM
  #3  
Chevy budget Olds powered
 
coppercutlass's Avatar
 
Join Date: Jul 2011
Location: Elgin, Illinois
Posts: 8,632
I had a stuck needle and seat do the same on my 650 dp. I took the carb off and drained the fuel and shook the snot out of it . I put it back on and whatever was in the needle and seat was gone. On the float level you want it to bearly trickle out in the front and back. I usually leave the back a little higher for fuel slosh in the bowl. Wives tail probably on that last tid bit but it aint hurtin nuthin either. I usually set my float level on a bench. If I remember right you flip it over and it should be 3/8 ths gap from the bottom of the float to the bottom floor of the duel bowl.
coppercutlass is offline  
Old September 15th, 2013, 10:02 AM
  #4  
Registered User
Thread Starter
 
Beob's Avatar
 
Join Date: Nov 2009
Location: Long Island, NY
Posts: 548
Thanks for replies. Took bowl off and pulled needle out, didn't see anything wrong. Cleaned and put back together, not dripping anymore and running great. Thanks
Beob is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
j_link
Parts For Sale
1
December 27th, 2011 10:34 AM
1FSTLS1
Parts For Sale
4
January 16th, 2011 02:30 PM
delta881972
Small Blocks
2
January 24th, 2009 05:54 AM
77omega
Parts For Sale
1
May 14th, 2008 08:45 AM



Quick Reply: Help with Holley 750 DP



All times are GMT -7. The time now is 06:12 PM.