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Ecklers AutoMotive
Username Post: 56 BEL AIR CARBURETOR ISSUE        (Topic#355505)
CRIZROCK56 
Poster
Posts: 9

Reg: 01-16-19
03-05-19 12:53 PM - Post#2761377    

HELLO FELLOW RODDERS I GOT A GOOD ONE FOR YOU . I RECENTLY REMOVED A 2 JET ROCHESTER OFF MY 265 MOTOR. I REPLACED IT WITH A REBUILT CARB. WHEN I WENT TO START ENGINE IT RAN AND SOUNDED GREAT THEN AFTER A MINUTE THE MOTOR STARTED TO KNOCK TERRIBLE. DURING CARB INSTALL,I MAY HAVE DROPPED A NUT OR WASHER INTO THE TOP OF INTAKE WHERE CARB SITS. WOULD THIS CAUSE THE KNOCKING? IS IT POSSIBLE FOR THE NUT TO MAKE ITS WAY INTO VALVES ? PLEASE ADVISE. THANKS **CHRIS FROM CALIFORNIA



 
Ecklers AutoMotive
Bad56Sedan 
"12th Year" Gold Supporting Member
Posts: 1041
Bad56Sedan
Loc: Pasadena, Texas
Reg: 04-29-04
03-05-19 04:14 PM - Post#2761392    
    In response to CRIZROCK56

you replaced the carb and you may have dropped a nut or washer into the intake manifold?
did you happen to notice if you were one nut or washer short while bolting the rebuilt carb back to the manifold?
just a thought

VC56S 2 door Sedan, 39 Years

[image]http://www.chevytalk.org/fusionbb/fbbavatars/a v-3564-1354211547.jpg[/image]


Edited by Bad56Sedan on 03-05-19 04:15 PM. Reason for edit: No reason given.

 
56KIE 
Silver Supporting Member
Posts: 25
56KIE
Age: 57
Loc: Winnipeg Manitoba Canada
Reg: 12-13-18
03-06-19 07:46 AM - Post#2761436    
    In response to CRIZROCK56

YES, if you dropped something into the opening it could get to the valves & if small enough it could be on top of the piston now.
Depending on the type of metal, you might be able to use a magnet in the spark plug hole & find it.

If you find it and it is just a little beat up, it may not of done any real damage, test drive would let you know for sure. Otherwise you will need to pull the heads to find it, a washer would likely not cause any real damage, but a nut is much harder & could cause some issues.



 
56sedandelivery 
Dedicated Member
Posts: 5577
56sedandelivery
Age: 67
Loc: Everett, Wa.
Reg: 02-26-08
03-06-19 06:29 PM - Post#2761482    
    In response to CRIZROCK56

First thing, do NOT run it any more until you find out why it's acting this way. Pull ALL the spark plugs, but keep them in ORDER of which cylinder they came from. If you find a spark plug with a beat up electrode, you've found the cylinder that's affected. If you have a magnet or a bore-scope, see what you can see. Chances are, that head will have to come off to access the damage. I've always worried something like this was going to happen to me, but it never did! Who knows what damage could have been done; messed up piston, bent valve, scored cylinder wall, and the list goes on. Good luck and report back.
I am Butch/56sedandelivery.




 
Ecklers AutoMotive
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