exhaust popping

oldskool

oldskool

Well-known member
i have a popping i believe outof exhaust maybe carb also on my 1950 8BA, new,points and cond,cap rotor,wires plugs,i checked timeing and its about 1/4- 3/8 before tdc dot,the vacuume advance is not working due to wrong carb for loadomatic dist,i have the correct carb and it needs rebuilt,could a bad power valve due this? or could it be due to dist advance not working?i put a vacuum gauge and getting a 21 inch steady needle,the popping is mostly under acceleration in first and second and less in third,this engine is tired and will be replaced with a total rebuild this winter,just trying to make it till then..thanks al
 
wrong carb for loadamatic is the problem..
put the 3 bolt 94 carb on and hook up the vacuum advance, your problem is no advance. the stock carb & dist. will get you by until your plan to rebuild comes around.
 
The 8BA dont have an TDC indikator, the "point" mark is at 4 degrees TDC. And there is where the igntition shold be set.

Then you have the Dizzy problem mentioned above, but i dont think it should cause Exhaust popping.

Have you checked the wires and cap and rotor sparkplug's , so you you get a proper spark. If you start it up at night and look under the hood for sparks that should not be there.

Then you may have a carb problem, causing the engine to go lean when accelerating.
Have you checked the accelerator pump? If you can borrow a known good carb.
 
OlDskool. I have a 52 that was doing the sme thing. The new rat piss they call gasoline was causing the problem with the methanol the. Carb will need to be jetted out a little Mine was doing it only when the engine was at idle . Could be the fuel.
 
thanks guys,

reset timeing as per mr42,never know the mark was where timeing should be set ,im rebuilding the correct carb will check jet size,wires are new and not crossed check them ,she don't miss idles fine,after carb rebuild willl hook up vacuume advance w/new unit and give it a try, thanks for all your imput.. al
 
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