Can incorrect ignition timing cause engine damage?
I accidentally ran my engine for a few minutes with the wires on the distributor completely mismatched. I didn’t drive it but started it twice and it only idled a few seconds each time. Is this bad for the engine?
- 3 months ago
Yesss. It CAN cause engine damage.
- Dan BLv 73 months ago
No, not at all for the few seconds you did it. There are mechanics who have miswired the plug wires and those who have yet to miswire plug wires. Eventually, they will.
- Robert MLv 73 months ago
STOP WORRYING, XXXXXXXXXXX
- M.Lv 73 months ago
Yesss. It CAN cause engine damage. During sustained driving or perhaps racing, too advanced of ignition causes one problem, and too retarded of ignition timing causes another (overheating).
But in your case, I doubt there was any, because you idled and only ran a short time.
-Engine overhaul mechanic and general automotive mechanic since 1972
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- thebax2006Lv 73 months ago
Of course it's bad for the motor. You didn't damage anything in that short of time.
If the vehicle was driven for several hundred miles that way you'd need to change the oil and filter because the un-burnt gasoline gets in the oil and dilutes it.Source(s): Mitsubishi Master Tech
- STEPHENLv 73 months ago
"Is this bad for the engine?". It isn't good, but a few minutes won't do any harm.
- BillLv 63 months ago
sort periods will not damage an engine
- Anonymous3 months ago
For a few seconds? No.
- jimanddottaylorLv 73 months ago
It can be bad. If the spark fires too early in the compression stroke the explosion tends to make the engine turn backwards. I presume that if it started and ran that things were not too bad.