Re: Spark plugs under water

Posted by Hal/WA on April 29, 2003 at 00:36:39 from (208.8.194.51):

In Reply to: Spark plugs under water posted by David on April 26, 2003 at 10:54:22:

I just bought a used car for my daughter. I was able to negotiate the price way down because the check engine light came on and it seemed to accellerate slower than I thought it should. It ran fine once up to speed. The former owner claimed that it never did that before. I expected that one of the components that run the fuel injection had failed.

I bought one of those OBD II code readers and hooked it up. It showed the problem as being a miss in Cylinder #4. I pulled the plug wire and found a bunch of water down the hole. It is a double overhead cam 4 cylinder engine with the plugs between the cams. I just dried out the hole with paper toweling and left the wire off for a day to dry out. It runs great now and I never even pulled the spark plug. A repair that cost almost nothing!

I assume that the owner tried to detail the engine compartment a bit the night before I looked at the car. He probably used his garden hose and some water got down that plug hole. The others were dry.

I am also impressed with the code reader tool. It appears that to work on almost any post 1996 vehicle, you almost have to have one. Once before, I had a problem with another newer car and payed a shop $40 for about 3 minutes work hooking up their code reader and interpreting the trouble code it showed. Now I can do it myself. Only 2 more times and I break even cost wise. Without it, it might have taken me awhile to find the problem, since I thought the problem was in the fuel injection. Luckily I did not explore that possibility other than making sure connectors were tight--I might have screwed something up... Technology marches on, whether we like it or not. In this case, I guess I do.

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