A while back I used a product(about a pint) called "DRY HEAT."

Worked really well in removing water from the tank.....But I made the mistake of leaving about a quart of gasoline in the tank and then I added. The vehicle on the freeway bareley ran at all (about 20 miles an hour) <img src="/forums/images/graemlins/confused.gif" alt="" />

Just did not seem to burn right. Make sure you ratio is correct in the interest of driving safety! <img src="/forums/images/graemlins/kewl.gif" alt="" />

OK, I added a bottle of ISO-HEAT premium (red bottle) water remover. The store didn't have Seafoam and I needed to add something right then. It ran like crap for just a bit and I figured I had it under raps with that.

It seemed to settle out but the miss returned.

So I went and had it scanned.
The code reader said #4 cylinder misfire.

That has happened to my Kia twice, the first time after spending a lot of money on censors and a used ECM I pulled out the injectors and cleaned them and it was fixed. The second time I ended haveing to replace an injector with a rebuilt one. I only went through 2 fuel pumps, a set of spark plugs and removeing the tank to clean it before I found the bad injector. Mine through engine cods also, that why I bought so many parts but both time the injectors were the problem.
Hope this helps, Dennis

That may be the problem.... I have no idea at this point...

I do have a question for you though...

Did yours only miss at times when the contents of the fuel tank were being sloshed around?

Like when taking off...
Or starting up steep grades...
Or when doing sharp cornering...
Or right after a hard stop...

That's what has had me thinking it was water... or possibly trash in the tank.

Otherwise I would have assumed it was a wire, the plugs or a coil pack, or some ignition short...

It missed most of the time no matter what, Pull your spark plugs and If one is darker or differant than the rest it is most likely that injector. Thats how I found the one I had to replace. Pull the injectors out and clean them with a spray carb or injector cleaner and reinstall them in the same location and If you still have a miss replace the injector that had the odd colored spark plug. It is alot of work but sometimes thats what it takes.

Hope this helps. Dennis

Thanks Dennis.

I had a similar problem but is was on #3. I found that the coil had a very fine crack where it connected to the spark plug and as it heated up the crack would expand causing a poor connection to the plug and a miss fire.

I ended up replacing the coil. Problem solved.

#4 uses a plug wire, but you could still have a crack at the coil or a bad plug. Try swapping the coil and plug wires with #1 and #2 to see if the problem moves to another cylinder.

Logansportage <img src="/forums/images/graemlins/patriot.gif" alt="" />

I know it has been like 2 weeks now, but I have not had time to fool with this crap.

I did know though that it was going to get really cold here. So I drove it over the weekend and ran it almost empty (best I could tell). Then I parked it that way and waited for the cold to come.

My logic was, if it was water, it would surely freeze now, and the thing would either run better or not at all.

I took it out early this morning and it did run better than before. But, it did still miss a time or two.

I was by autozone later so I picked up a can of SeaFoam to run through it since so many say that stuff is the best... and since it's worth a shot since I will not have time to tear it apart for a deeper look for some time.


Anyone here use SeaFoam?
It says 1 oz per gallon of gas... I'm doing that.
I'm also thinking of trying to find a way to direct feed a pint into the injectors. I just haven't been under the hood yet with that in mind to figure out what vaccuum line I can use to suck it in.

If it were water, it would settle at the bottom of the tank, but may not freeze!

I've used seafoam for about 15 years with great success with one exception, sadly that one exception was my sporty. As the seafoam burnt off it 'confussed' about all the sensors on the sporty and triggered a few CEL's but nothing that wasn't cleared up by resetting things (either by using a code reader or un-hooking the battery for 10 minutes)

To correctly use seafoam, pour 1/3 of the can into the tank, 1/3 into the crank, then take a length of vaccum hose and hook it up to the vaccum port on the intake manifold, put the other end of the hose in the seafoam can with the remaining 1/3 in it. Now start the engine, the seafoam will be drawn into the intake manifold, it should stall out, if it does let it. If not once the seafoam can is empty shut the engine off.

Now wait 15 to 20 minutes. start the engine it will be sluggish at first and create a huge cloud of white smoke, so close the doors and windows to your house and warn the neighbors. Seriously there will be alot of white smoke. The smoke should start getting less and less and will take 10 to 20 minutes to totaly clear up, although you may still see traces of white smoke for a while after in the exhaust gasses.

Once the engine stops pumping out most of the white smoke the engine should be nice and warm, shut it off and change the oil, the seafoam that you put in the crank would have removed most of the carbon and varnish build up in the engine and oil, so you will want to change both, remember to change the filter.

The seafoam you put in the tank will run thru in time, and should remove any water and build up in the fuel lines and injectors.

Like I said I've been using this stuff for decades and this is how I use it, I have used it on Cars and trucks from the 40's, all the way up to todays cars. Everything from everyday drivers, to 60's Mopar muscle cars, heavy duty trucks and small high reving sports cars. It also works great on lawn mowers and snow blowers, basically any 2 or 4 stroke engine.

You can also go to the seafoam web site they have a video on how to use it on both fuel injected and carburated engines.

Well, I took this little vaccuum line loose over on the driver's side in front of the brake fluid reservior.

I cleaned it real good, then cranked up and let it suck in the remains of that can of Seafoam.

It started missing and smoking... then smoking like crazy.

It never did die though, so I shut it off.

I let it sit only 5 minutes... let the can directions mess me up.

When I went to start it, I had trouble with it cranking back. But I did get it going again.

To say it smoked a lot is a vast understatement.
I've never seen anything like it.

It was so bad and went on so long that I finally took it on for a drive to finish clearing it up... after the smoke cleared enough for me to see in front of me.

I had no issues with setting anything off and now the sporty runs better overall than it has in a very long time. I'm not sure I can remember it ever idling as well or having as good of throttle response.

I have since started it cold and gotten a small hesitation miss when I first started to take off though. But no other issues otherwise.

So it is not totally cured...
And as much as it smoked, I've been questioning rather I should repeat the Seafoam again?