When the idle goes rough, you must idle the plugs. Else the car plugs roughly.
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.
maybe bad fuel try some dry gas
Why does my 2000 Pontiac Grand Am, with a 2.4L engine, run rough at idle but runs normally when placed in neutral? I changed the plugs and air filter, but the problem continues.
Foaming often indicates that the fluid level is too high. Maybe you overfilled the oil? Rough running could be many things. If you haven't changed plugs and plug wires lately, that could be a good place to start. FriPilot
a plug misfiring would cause the rough idle and check engine light or if u changed the plugs and wires u could have put the plug wires in the wrong order
Bad spark plugs can have a variety of effects on the performance of your car's engine. Signs of bad spark plugs include a rough idle, engine hesitation, hard starting, check engine light illuminated with a DTC P0300 and reduced engine power.
Yes. Bad spark plugs, bad spark plug wires and a bad distributor cap are the common causes of rough idling. If it has been a while since you changed these components, do so.
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.
The simile "rough as sandpaper" is commonly used to describe something that feels rough.
This would cause your engine to run really rough and can through time hurt the engine. It is possible but not advised. All spark plugs must be connected to the holes in which they connect or you will lose compression and the engine will not run at all.
if it idles rough too, check your plugs, if not, check your fuel filter.