Okay guys,
I took my car to a tranny specialist due to the thud/slug feeling I was getting while driving down the road (usually at slower as opposed to faster speeds). It really felt like a tranny problem, but he informed me that it is a misfire. After I popped my hood, revved the engine (just a bit), and placed my hand on the manifold/plenum, it became clear that he was right. I do indeed have a slight misfire.
I started to wonder if it was due to plugs/wires (which I later found had never been changed). So, I sprayed the wires with some water while the engine was running and it was pitch-black out. They indeed lit up in a number of places. Im told that this is a tell-tale sign that your wires are bad. So, I replaced my plugs (they were Densos, I threw in the OEM NGK replacements) and I replaced my wires (the reccommended OEM replacements from CarQuest). And yet, I still have the misfire.
I decided to spray my wires with water again...and found that they still light up in a number of places (by light up, I mean there is a spark/arc). So, does this mean that these wires are bad too? Or was I simply misinformed about the "just spray 'em with water" theory?
Now, lets assume for a minute that the wires aren't the problem...what do you think it could be?
I did check resistance across the coils and the Cam position sensor. They all check out just fine. However, the left-most coil was about .1-.2 ohms higher than the other two. Don't know if that is enough to make a difference. Also, I ran some seafoam through the brake-booster line a couple of nights ago...still no improvement.
Please help me figure out what is wrong. I have been considering taking it to a shop to do the injector treatment, where the run some cleaner almost directly through the injectors. Is this a good idea?
Thanks
I took my car to a tranny specialist due to the thud/slug feeling I was getting while driving down the road (usually at slower as opposed to faster speeds). It really felt like a tranny problem, but he informed me that it is a misfire. After I popped my hood, revved the engine (just a bit), and placed my hand on the manifold/plenum, it became clear that he was right. I do indeed have a slight misfire.
I started to wonder if it was due to plugs/wires (which I later found had never been changed). So, I sprayed the wires with some water while the engine was running and it was pitch-black out. They indeed lit up in a number of places. Im told that this is a tell-tale sign that your wires are bad. So, I replaced my plugs (they were Densos, I threw in the OEM NGK replacements) and I replaced my wires (the reccommended OEM replacements from CarQuest). And yet, I still have the misfire.
I decided to spray my wires with water again...and found that they still light up in a number of places (by light up, I mean there is a spark/arc). So, does this mean that these wires are bad too? Or was I simply misinformed about the "just spray 'em with water" theory?
Now, lets assume for a minute that the wires aren't the problem...what do you think it could be?
I did check resistance across the coils and the Cam position sensor. They all check out just fine. However, the left-most coil was about .1-.2 ohms higher than the other two. Don't know if that is enough to make a difference. Also, I ran some seafoam through the brake-booster line a couple of nights ago...still no improvement.
Please help me figure out what is wrong. I have been considering taking it to a shop to do the injector treatment, where the run some cleaner almost directly through the injectors. Is this a good idea?
Thanks
