recheck wires to plugs sounds like two are crossed
Rough Engine Performance AFTER Changing Distributor Cap and RotorThe only thing I can think of is that in the process of the changeover, the wires between the newly installed rotor and the spark plugs were not reconnected to the proper "towers."As a result, the spark plugs are not firing in the proper order thus causing the rough running. Since the engine will run, I also suspect that possibly only one or two plug wires are improperly connected.
change the plugs and wires
try checking youre timing
Corrosion inside the distributor cap. Get a new cap and rotor.
have you tuned it up? plugs, wires, cap + rotor
When the idle goes rough, you must idle the plugs. Else the car plugs roughly.
There are several things that can cause your 1993 Nissan 300 to idle rough. The most common cause is dirty spark plugs. Bad spark plug wires can also cause the problem.
I would recommend checking for codes before you do anything else.
There are several things that can cause your 2002 Kia to idle rough. The most common cause will be bad spark plugs or a bad spark plug wire.
check vaccum lines for leaks,or your valves could need adjusting.
distributor cap and rotor
The most common cause of a 1996 Ford Escort to idle rough is bad spark plugs or bad spark plug wires. A plugged air filter will also cause it to idle rough.
I would tune it up, Plugs and wires, Factory AC Delco Cap and Rotor And change the fuel filter.
Was the truck running OK before the plugs were changed?If ok before the plugs were changed then I would recheck the plug gap & check the plug wires. It is easy to damage the carbon fiber inside the wires. If they are old say around 40.000 miles I would change them. If truck was running rough before plugs were changed I would look at timing & vaccuum. Also cap & rotor. The converter can be a problem with rough engine perform. Check for bad gas.
Engine is running extremely rich.
the transmition ,is probably not adjusted to the spark plugs,or their not the right spark plugs
Many things can cause a rough idle. Bad plugs, plug wires, broken or leaking vacuum hose, defective fast idle solenoid, just to name a few.
A bad spark plug, a bad spark plug wire, a bad distributor cap, a bad rotor, a bad fuel injector, the firing order is mixed up, a bad valve or a vacuum leak could cause your rough idle.
Maybe your air filter or plugs and wires. Or maybe your MAF sensor or your IAC valve needs cleaning.
Could be many things but a good tune up would be a good place to start, spark plugs, wires, cap, rotor, air and fuel filters.
Start with a full tune up including fuel and air filters, spark plugs, ignition wires, distributor cap and rotor.
There are a number of things that can cause an engine to run rough. Plugs may be bad. Plug wires may be bad. If you have sensors, there may be a bad sensor. You could have water in your gas. Could have a burnt valve. There is a number of different things.
Power brakes use engine vacuum to get their power. If the engine is out of tune, the loss of vacuum will cause it to run rough. Try changing the spark plugs.
well i'd give it a tune up new plugs new cap and rotor new plug wires and have timing checked Fuel pressure regulators can also go bad, or your EFI poppets are clogged and you're not getting a full "spray" from them.