mopar 3 B
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- Aug 25, 2014
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- Kingsville, MO
Any reason for not hooking the carb rear air door back up?
Why does the area around the accelerator pump look fuel stained?What else could possibly have been damaged as a result of the backfire I wonder?
Would have blown any pluged vacuum ports first.could the backfire through the carb have created a vacuum leak at the intake gasket?
AVS carbs have those. This one does not.Any reason for not hooking the carb rear air door back up?
This the an old reman carb that came with the engine when I bought it. It has all sorts of blemishes and such on and in it.Why does the area around the accelerator pump look fuel stained?
Possibly, sir. That and the carb base gasket crossed my mind also. Carb gaskets look fine; I reckon I'll hose down the intake with some Brakleen next time I have it running. Thanks!could the backfire through the carb have created a vacuum leak at the intake gasket?
If that's the case, this rascal only has the screwed in 1/4" plug in the back of the carb (since I don't have power brakes).Would have blown any pluged vacuum ports first.
Got a fresh set of eight to install sitting on my desk as we speak.Maybe try pulling plug wires to find out which cylinder isn't firing and change the plug? Maybe one got damaged?
Can't disagree but I'd still do pull wires one by one if you have a dead cylinder .Got a fresh set of eight to install sitting on my desk as we speak.
I am wondering, though:
What exactly did I prove/check by hooking up the timing light to each spark plug wire?
If a plug were damaged/fouled/not firing, would the light have lit up anyways??
I would have but I ran out of "personal gas" pretty quickly today.Can't disagree but I'd still do pull wires one by one if you have a dead cylinder .
Light only shows the wire carried current to ground some where. If the light had not lite the plug wire would not have been any good.Got a fresh set of eight to install sitting on my desk as we speak.
I am wondering, though:
What exactly did I prove/check by hooking up the timing light to each spark plug wire?
If a plug were damaged/fouled/not firing, would the light have lit up anyways??
So that at least rules out a bad wire.Light only shows the wire carried current to ground some where. If the light had not lite the plug wire would not have been any good.
Beats me. Amplifies the spark somehow?Little trick I learned, and don't know why it works---With engine running , and you have a cylinder not firing ( usually due to fouled plug) pull the spark plug cable off and hold it just a little ways from the plug so that it has to jump spark across the gap. Many times the spark plug will start firing and then you can put the wire back on the plug. ..................................MO
The coil will only supply as much voltage as needed to cross the gap. By holding the wire from the plug, the coil will supply more voltage. Years ago, they sold these "spark amplifiers " to increase gas mileage using the same principle.Beats me. Amplifies the spark somehow?
Not going to happen much in this case anyways - these stinking headers won't let me do much of that.
Ah yes, I remember those!The coil will only supply as much voltage as needed to cross the gap. By holding the wire from the plug, the coil will supply more voltage. Years ago, they sold these "spark amplifiers " to increase gas mileage using the same principle.