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-   -   quadra 75 ? (https://www.rcuniverse.com/forum/gas-engines-142/11509388-quadra-75-a.html)

WhiteRook 05-12-2013 10:05 AM

quadra 75 ?
 
ive got an older quadra 75 , and the carb wont take any fuel in , the engine has plenty of compression
, any ideas?

tkg 05-12-2013 10:53 AM

RE: quadra 75 ?
 
Rebuild the carb, check for improper mounted gaskets or leaks in the crankcase

WhiteRook 05-12-2013 11:04 AM

RE: quadra 75 ?
 
the carb is new , mabey something is stuck inside it

Rodney 05-12-2013 11:23 AM

RE: quadra 75 ?
 
Make sure the passage between the crankcase and the carb is open. If the mounting block or a gasket got placed improperly, it could be plugged.
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Truckracer 05-12-2013 11:29 AM

RE: quadra 75 ?
 


ORIGINAL: Rodney

Make sure the passage between the crankcase and the carb is open. If the mounting block or a gasket got placed improperly, it could be plugged.
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Agree ..... these old Quadras had a gasket between the carb and the reed housing that seemed prone to closing up the pulse hole, perhaps from shrinkage? I have seen the hole completely closed off. This might be an area you might want to look at. I usually just make a new gasket with more material in the area of the pulse port.

WhiteRook 05-12-2013 12:08 PM

RE: quadra 75 ?
 
thanks , i'll check the ports . someone tried to plug up the compression realease feature on this engine
and it didnt work, so i have a leak there. dont know how in the he!!! im going to fix this. its got an allen bolt screwed
into it in an atempt to seal it , but it leaks. JEEZZ

OKAY now i have two problems , first , the engine has the wrong carb and base gasket , so the correct ports are blocked.
its supposed to have an SDC-80 , IT Now has a wt159

if i can find a used SDC-80 THAT would help


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