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etharms · Nov 25, 2007, 09:09 PM

Today on my way home from my girlfriends house I heard a bang I immediately turned the car off and pulled over and popped the hood. On my No.2 cylinder plug the spark plug had popped out. So I tightened it down and reset the spark plug end into its little hole. The whole ride home my felt like it had no power at all it would maintain speeds but had a total lack of acceleration and was making a different exhaust sound that it was. I'm fairly certain that the rod was not thrown and I have a feeling its just not firing on that cylinder any thoughts anyone?

Duane in Japan · Nov 26, 2007, 11:39 AM

The first simple test is to move that spark plug to a different hole and see if the problem follows the plug, do you know how to pull a plug wire while the engine is idling and then see if the idle goes down more, this is a power balance test, if the idle stays the same when youpull the plug wire then that cylinder is not working, could be several issues. Do the test before you move the plug to get a baseline test. Let us know what you get.

etharms · Nov 26, 2007, 12:48 PM

I did the power balance test you said and found that my 2nd cylinder from the driver's side was not working I checked the spark plug and checked all my connections and actually got it to go again. The only problem is that the car will lose power when accelerating quickly. It is normal under normal acceleration but when I get on it it cuts out

Farmerjohn692000 · Nov 26, 2007, 12:54 PM

Sounds like the spark plug was not all the way in. and the pop you heard was compression blowing the plug from the hole. What you need to do is go buy another spark plug and put it in making sure it is good and tight. Check the plug wire for damage. And if you know how to check for spark before puttin the plug in that may be smart. If your not getting any spark that me be the lack of power problem

Duane in Japan · Nov 26, 2007, 07:04 PM

Losing power when you get on it hard is typical for a leaking spark, spark is finding an alternate route OR the cylinders are going lean, meaning not getting enough gas. I would do a complete tune up for starters including plug wires. It is quite popular for the spark to jump out the side of the plug wire down inside the spark plug well. Plugs, wires, cap, rotor, fuel filter and air filter.

Now it still may be possible that you have a weak fuel pump or dirty fuel injectors but a dead head test may clear that issue up, more later on that if the tune up does not help.