Best Answer

Possible wires installed wrong or plugs not gapped properly. You don't say what kind of car so I cant tell you the firing order. Check you put the right wires on right plugs. ALSO- If you have a timing light or access to one- Check timing! If it was timed/tuned with old plugs for several years (it happens, my smog guy does it to pass me), then it might have been changed to accomodate the old plugs wearing down. Plus a hotter burn/spark will automatically change your compression and therefore your whole burn sequence. I put in 'fancy' platinum plugs in my Bronco once and it refused them, running terrible. Had to put in new 'old' type plugs and ran perfect. Go figure. Dokter Denney

User Avatar

Wiki User

โˆ™ 2005-12-11 17:07:49
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: Why would your truck vibrate and idle rough after you changed the spark plugs?
Write your answer...
Still have questions?
magnify glass
Related questions

Why the engine feels rough after changed the spark plugs?

the transmition ,is probably not adjusted to the spark plugs,or their not the right spark plugs

Does bad spark plugs give you a rough idle?

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.

Why does your car vibrate when it accelerates?

as a result of bad spark plugs

Why does a Chrysler Pt cruiser Idle rough after new spark plugs?

Maybe when they put the spark plugs in they were not gapped right or they maybe the wrong spark plugs.

What do old spark plugs do to a car?

Old spark plugs can make a car misfire, run rough, and not fire at all.

How do you know spark plugs are bad?

Poor performance, hesitation and rough idle could be signs of worn out spark plugs.

Why does your 1995 Mazda 626 idle rough and hesitate on acceleration?

Change the spark plugs and wires... Change the spark plugs and wires...

1997 Dodge Intrepid is idling rough have changed plugs. but still idels rough?

Spark plug wires? Coil pack? Dirty injector? Spark plug wires? Coil pack? Dirty injector? Spark plug wires? Coil pack? Dirty injector?

Will bad spark plugs and plug wires make your car vibrate?

Yes, bad spark pugs or plug wires can cause the engine cylinder to misfire which will cause the engine to vibrate.

Changed the spark wires spark plugs and distributor cap now car will crank but not start?

Check/replace Rotor Check for spark at plugs

How often should spark plugs be changed?

30000 miles

When do the spark plugs and wires need to be changed on a 2005 Dodge Grand Caravan?

I would replace the spark plugs after 50K, the wires and plugs again at 100K.

People also asked