TROUBLE SHOOTING GUIDE - advertising.edelbrock.com

1 QUESTIONS TO ASK. WRITE THE DATE CODE ON THE RECEIPT WHEN YOU SELL A CARBURETOR Edelbrock carburetors need to be below psi or the car will Edelbrock Performer series Carburetor Warranty is 90 days, What is the fuel pump pressure? flood. Some stock pumps produce over psi. Reduce pressure with the use of a fuel pressure regulator (not included). thunder series AVS Carbs is one year and all remanufactured Carbs is 30 days What is your If you are running a larger than stock camshaft, you should When a customer returns an Edelbrock carburetor, base ignition timing set to?

2 Set the timing to 10 - 14 degrees. always match the date code and part number to the customers receipt What intake manifold Edelbrock carburetors are made for Square Flange . Please take a close look at Julian dates for a correct warranty return are you running? intake manifolds. An Edelbrock adapter may be needed. If the date code is over 1 year from the day of return, Did you check for vacuum leaks? A weak vacuum will not idle correctly. it is probably not within the 90-day warranty period To help your customer with preventative maintenance always recommend that an Did you have a large camshaft?

3 Any camshafts that are 110 Centerline or smaller, have weak vacuum and will require more ignition timing. in-line fuel filter be added when using an Edelbrock carburetor such as Part #8134. and #81343 for Performer & thunder series Single Feed, or #8133 and #8128 for thunder Did you install the included fuel filter? You must run an external fuel filter to keep contaminants series Dual Feed. This will help prevent debris from entering the carburetor during (Part #1405 and #1406) out of the carburetor installation as well as daily usage, thus reducing the chance of needless warranty return.

4 When did you purchase Is it still within warranty requirements? this carburetor? TROUBLE SHOOTING GUIDE . PROBLEM POSSIBLE SOLUTIONS SOLUTION INDEX. Carburetor doesn't adjust properly 1 - 2 - 7 - 12 1. Check for air leaks. Make sure gaskets seal properly. All outlets must be plugged or connected. Carburetor floods 6 - 10 - 11 - 13 - 16 - 20 - 22 2. Check ignition system. Adjust timing to proper specifications. Fuel leaks at shaft 6 - 10 - 11 - 13 - 15 - 16 - 22 3. Check choke adjustment. 4. Change carburetor fuel filter and/or in-line fuel filter. Internal fuel leak 6 - 11 - 13 - 14 - 16 - 21 - 22 5.

5 Too lean. 6. Check float level and drop. Misses or surges 1 - 2 - 3 - 4 - 5 - 12 - 17 - 20 7. Check idle mixture screw adjustment. Stumbles or loads up 3-4-6-8-9 8. Too rich. 9. Increase accelerator pump stroke. Pump squirter size change may be needed. Engine won't idle 1 - 2 - 3 - 7 - 12 10. Off-road vehicle may need spring-loaded needle and seat kit. 11. Check for dirt or metal in needles and seats. Rough idle 1-2-3-7 12. Check for dirt blocking the low speed circuit. Clean unit and apply air Backfires 1-2-3-5-8 pressure. Install in-line fuel filter #8062.

6 13. Check floats for holes and leakage. Bogs 1-5-8 14. Check air horn gasket. Replace if deterioration or breakage is present. 15. Fuel is boiling due to excessive under hood temperature. Hard starting 1 - 2 - 3 - 4 - 15 Install Heat Insulator Gasket (not included). Lack of power 1 - 2 - 3 - 4 - 5 - 8 - 9 - 17 - 18 16. Fuel pressure too high. Fuel regulator may be needed. 17. Fuel pressure too low. Check fuel system. Pinging at moderate cruise just off idle 1 - 2 - 4 - 5 - 7 - 12 18. Check secondary latching device and rod for proper movement. 19. Lower float level from 7/16 to 1/2.

7 Engine stalls on hard braking 6 - 13 - 14 - 16 - 19 20. Float level out of adjustment, set to 7/16 . Low fuel economy 1 - 2 - 3 - 6 - 7 - 8 - 11 - 12 - 13 - 14 - 15 - 16 21. There should be NO vacuum on the timed port and passenger side vacuum port. If so, the throttle blades are open too much. Idle mixture screws won't function 11 - 12 - 13 - 16 - 20 - 21 - 22 22. Bad needle and seat. WARRANTY WILL BE DENIED JULIAN CODE SEQUENCE. We have revised the date code on all carburetors produced from January 2007 forward..the drilled linkage is larger than 1/4.

8 The carburetor is damaged due to fire 2007 Julian dating sequence is as follows: First digit: Year in which the carburetor was manufactured. Last three digits: Day in which the carburetor was manufactured..the choke housing is broken Example Julian date: (7026) This carb was manufactured on the 26th day of 2007. Carburetors with standard as-cast finish ..visual defects due to customer abuse and misuse are stamped on the front of the carb base How is this different from previous years? 2006 and older production Julian dating sequence was as follows: ..the thunder series AVS Carburetor is over 1 year old.

9 First three digits: Day in which the carburetor was manufactured..the Perfomer series Carburetor is over 90 days old. Last digit (4th digit): Year in which the carburetor was ..the reconditioned carburetor is over 30 days old. manufactured. Example Julian date: (0106) This carb was manufactured (Check the Julian Code below to verify the date). Carburetors with EnduraShine finish are on the 10th day of 2006. stamped on the bottom of the carb bas