According to California Air Resources Board (CARB), "Engine Misfire
" refers to lack of combustion in the cylinder due to absence of spark, poor fuel metering, poor combustion, or any other cause, and the combustion events in non-active cylinders due to default fuel shut-off or cylinder deactivation strategies are excluded .
This graph depicts nine successive cycles on a single cylinder, and you can see that four of the cycles are near-or total misfires
. This is because the mechanical governor is "hunting," and causing some cycles to be under-fueled, and some to be adequately fueled.
As a result, the California Air Resource Board's Mobile Source division (El Monte) has targeted misfires
as part of its On-Board Diagnostics II regulation adopted in 1989.
Therefore, your misfires
are very likely being caused by the design of the rifle.
In the countless thousands of rounds I've fired from Reichard Smiths, I don't recall a misfire
unless it was a dud primer.
you're seeing resulting from light hits on the primer could be due to home-grown trigger jobs.
You didn't mention light hits as a cause of the misfires
, but if reloaded ammo is being used, you might want to check to ensure the primers aren't seated too deeply.
Can you provide any info on the procedure to remove and replace the hammer spring on this pistol--or any other ideas that might be causing the misfires
I have a Winchester Model 1300 12-gauge shotgun serial #L27660XX that occasionally misfires
. The misfires
show light primer hits.
ACP ammo will often misfire
in a revolver due to larger head space issues.
If it is suspected that one or more holes have not fired, a process for misfire
handling should be initiated.
The most common reason for a misfire
or cut out ( if the engine management light is off ( is the spark plug leads.