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Mopar killed my ls1

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Old 08-30-2010, 11:39 PM
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Default Mopar killed my ls1

I followed this thread to the alternative seafoam sh*t

https://ls1tech.com/forums/general-m...-your-car.html

And after doing this my SES light came up and my motro shakes like a epeleptic drunk man, throwing code p300

what can i do im really desperate already changed my plugs and wires for new ones and still doing this im really really mad at this stupid thread dam
Old 08-30-2010, 11:57 PM
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relax, im willing to bet your engine is just fine.

what do your spark plugs look like? and how much have you ran it after doing the cleaning?
Old 08-31-2010, 12:30 AM
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You may have clogged a cat blowing gunk out of your motor. I performed the MCCC with no ill effects.
Old 08-31-2010, 01:08 AM
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I have never had an issue doing it on any car. Seafoam however, is 100% sensor safe as well as 100% petroleum.
Old 08-31-2010, 02:16 AM
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Seafoam is the devil. I have tried to tell people this.
Old 08-31-2010, 02:29 AM
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I dont think that he used "Seafoam" though. Its so not the .
Old 08-31-2010, 07:25 AM
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I ran it a just for a little while since i got the ses light and was afraid to drive it more i use the MCCC not seafoam, so im not sure what happened, my 3 day old ngk plugs looked bleach white from the tips so i thought i swap them and i did along with the wires, new plugs are ac delco iridium and duralast wireset swap them in and still doing the same thing?? Also they told me not to gap the plugs since they come pre-gapped so not sure if it makes a difference


Also when doing the MCCC no smoke at al came out in the process??
Old 08-31-2010, 07:28 AM
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How long is a-little? Ive seafoam countless cars without any effects...
Old 08-31-2010, 07:59 AM
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How fast did you put it into the motor? If you introduce it too quickly you can hydrolock the motor and do some damage. I prefer spray for this type of thing and use the Mercury Marine spray can instead of Seafoam.
Old 08-31-2010, 08:08 AM
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Ive done seafoam through the brake booster line as the directions on the cam say and it did destroy the plugs a couple time because it is basically pure jet fuel however a quick change of the plugs always fixed it.
Old 08-31-2010, 09:56 AM
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I didnt use seafoam guys lol i used the mopar combustion chamber cleaner
Old 08-31-2010, 10:11 AM
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I'm not sure everyone knows what Seafoam is in here. Its definitely not jet fuel.

I can't believe no smoke showed up. Did you let it sit in the cylinders for a while? You know going through the brake booster is only going to get the back 4 cylinders.
Old 08-31-2010, 10:39 AM
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no no i followed the mopar thread so this STUFF IS NOT SEAFOAM IS MOPAR COMBUSTION CHAMBER CLEANER lol

no smoke at all not sure what i did wrong but this is the whole story

ok i followed the thread and it said to put this foam stuff through the pcv line on the intake so i did, as i did it at first i did it too fast so motor shocked fast and shut off, so i cranked it back up and it struggle a little but cranked and then continue to introduce the can until it run out and turn it off, let it sit for 3 hours crank it back up with no problems just the ses light flashing and then running really rough and lean, took out my 3 day old plugs and where white tiped, went to autozone told me white plugs meant running lean condition so i bought a new set of ac delco iridium plugs, they told me not to gap them so i just install them got new plug wires turn on the car shakes and throws ses light still with the code p300
Old 08-31-2010, 10:45 AM
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maybe some got on the maf ,sounds like this would be harsh on it.
Old 08-31-2010, 11:06 AM
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I am betting you just flooded it too quickly and you need to run it to get everything out. Doesn't seem like you gave it enough time to work its way entirely out of the system.

FWIW, I have done this on several cars, SES lights, engine running rough, etc, is all normal, to an extent.

Most recently, on my old 346, I used a B12 kit and it took around 4-6 miles for the smoke, rough running condition, SES lights, to stop and the chemicals to evacuate the engine.
Old 08-31-2010, 12:03 PM
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Well get it up to temp and give it the go pedal for a bit... If that doesn't help... look for correct 02 switching, and MAF values.
Old 08-31-2010, 12:34 PM
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I hope ill see what i can do need to fix assp
Old 08-31-2010, 04:18 PM
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So what else do u guys think according to a mecanic its missfire on 4 and 5
Old 08-31-2010, 04:20 PM
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Your going to get codes after you do this.. clear the codes, drive it... If its still doing it then you have other issues
Old 08-31-2010, 04:26 PM
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Fire it up and let it rip! Go drive the damn thing! Then report back after it is running smooth


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