My roommate was driving the old 2003 Prius and the car was misfiring. First was just #1 but when I checked, I was getting multiple misfires.Pulled the coil and only the coil on cylinder #1 has what looks like water on it. Has almost a burned dirt smell about it. No gas smell and I had ran the engine for a couple of minutes. I was preparing to pull the plug but when I pulled the socket out, it looks like there was water on it as well with thin mud on it. Should I clean everything out and replace that coil? Anything else I should? Does this indicate something serious?
Any liquid in the spark plug well can cause an alternative path to ground. The coil will discharge it's energy into the walls of the spark plug well, instead of out the tip, where combustion would happen. Stick some absorbent material down there and blow it out. You shouldn't remove the plug, because that will all drain into the combustion chamber. Good Luck....
Water was also on the underside of the top of the coil. I dried the spark plug well with a paper towel without removing the plug and replaced the coil with one from a 2006 that blew its motor. Coils have the exact same part number. Drove it for the usual test loop which is ~8 to 10 miles. No codes. I think I know what happened. Have had a lot of snow and rain. Aux battery died. Weather was so bad that I did not replace the battery for a couple of weeks because it is the backup car. The upper seal is no longer perfect and held on with zip ties. While sitting, water got inside and under the coil somehow.
Better yet, new gasket(s). Something like this: https://www.partsgeek.com/qx123xs-toyota-prius-direct-ignition-coil-boot-kit.html?gb=pp&cid=28884375&aid=4168799377&kid=1100003048859&msclkid=359862d3883015ab83880b7be5abafb8&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping%28BSC%29&utm_term=1100003048859&utm_content=Toyota&pgcgci=359862d3883015ab83880b7be5abafb8 Here's another thought, somewhat along these lines. From my own experience, it's not good to let the car sit for days without driving it, or at least starting it up once in a while. We're having a cold winter here in e. PA this year, and my trusty '02 needed a jump start (12V battery boost) one time during a stretch of single digit temps. Otherwise car has performed beautifully, knock wood.
Probably best if I get some silicone and try to seal that gasket above the spark plugs At make it a little bit better
FWIW; there's a good chance the original coil is fine. I've seen that a lot, especially when the oil ring seals on the valve cover leaks. The coils are usually fine and you just clean-up the oily mess.
The coil you pulled is probably fine it just needs to dry you don't want water spraying around you're ignition parts . You could fit that sticky plastic like the dentist office uses on all the handles on the light etc pull a 24 inch piece drop it over plugs n coils on valve cover it'll stop water from hitting top of valve cover and electronics. Till us figure out water entry points etc.
I have looked for the part number to gasket and tried to look to see if I can order one. Never found it and felt like I hit a brick wall. Seal was not perfect anymore after replacing the two front struts. If you have a line to where I could find a replacement, I would appreciate it? We are suppose to try to drive it at least once a week. I replaced the aux battery, which is a lawn mower battery now, took that one in the house and charged it on a charger, where it charged fine. Most of my drives are long while my roommate drives more short distance.
Try this: https://www.partsgeek.com/qx123xs-toyota-prius-direct-ignition-coil-boot-kit.html?gb=pp&cid=28884375&aid=4168799377&kid=1100003048859&msclkid=359862d3883015ab83880b7be5abafb8&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping%28BSC%29&utm_term=1100003048859&utm_content=Toyota&pgcgci=359862d3883015ab83880b7be5abafb8 Yeah, I have a rider mower 12V in mine, too. It's performed well, except for that one time I mentioned above, which was no doubt due to car having sat for 2-3 days in the cold. BTW, I did a search under "2002 Prius ignition coil gaskets" and the above link, among others, came up.
Yes rubbers and tips available wen the fakes fail I pull the basket and boot rubber before I send them back. Do I've a few sets on standby . But I don't get no water up there even running hard in the rain too big puddles
Well, I'm guessing that you could probably use an O-ring of the proper size from the hardware store, in place of the OEM gasket. Worth a try anyhow, and it's cheap!
OK, now I understand. You’re looking to seal the elements out from entering under the hood. My first thought would be to just use some appropriate weatherstripping material from the hardware or home despot., if you can’t locate anything at an auto parts store. You could consult the parts dep’t at the dealership to see whether there is indeed an OE part, get the part no., and order online (cheaper than dealer).
If you search "engine compartment weatherstrip," you'll get a bunch of possible materials to ponder. Like these: Epdm Weatherstrip All-Strip | Aircraft Spruce ® Or something like these: https://tinyurl.com/4n5sb9zs The OE weatherstrip has a lip that slides under, and is gripped by, a folded-over metal piece. It's not permanent, that is, you can remove the strip, as has evidently been done with your car now. OTOH, why would you ever want to remove it?
Since I had some spare coils, I figured just replace it. If I need to reuse the old one, I stuck it in the shed. Update: My roommate drove the car 56 miles last night without any codes. Seems like it was definitely was water in the spark plug well. I saw the weather stripping on Amazon and might work.
you should be able to take foam seals off other coils stack two on they're and bolt down take a 15 thousand feeler gauge try to insert it between valve cover and coil .?
