Sea Foam Question
I'd let it sit overnight if at all possible, or atleast for a few hours so it has a good chance to break everything up in your engine. But I would recomend changing your oil BEFORE you go to the dragstrip. I know it doesn't say it on the bottle, but w/ GM Top end cleaner your supposed to change your oil after running it, and seafoam does the same job, so if it did thin out your oil, I'd hate to run it a few passes at the track
I have no clue where it is. Thanks for your help! You want to add approx. half of the seafoam in while you keep the engine idling, then dump the rest in and let it die. Let it sit for awhile, ideally overnight. Change your oil after you add seafoam! It does have an added lubrication agent, but it's best to change your oil anyhow.
As FstBlkZ28 said, I wouldn't want to run on thinned out oil at the drags either!
Now on another note, Seafoam probably won't solve that pinging problem. It will help if there's a lot of carbon buildup in your engine, but thats about it. Bad gas may be your problem, do you run 93 octane? It says in your sig you were pinging at the dyno as well.
I'd guess that hypertech programmer the previous owner installed is causing it. You should be able to run fine on 93, no pinging at all. The tune they programmed is probably too radical.
Just a few things to look into
Rob
Last edited by BAD ASS TA WS6; Sep 17, 2005 at 02:52 PM.
My proof: When i had my head off, i had a HUGE amount of carbon build up on top of my pistons, so i poured some seafoam in the cylinders and let it sit for 20 minutes. Soaked it up, and then tryed rubbing the carbon .... barely even put a dent in the carbon build up. Whether or not a full night would do any better ... who knows
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I've never used Seafoam before, and obviously have no idea what im talking about.
Rob
The block was actually out of a '79, and we didn't notice any sludge in the motor at all when we tore it apart. Which was actually pretty surprising...
I don't know if sludge build up is common after using Seafoam. I didn't notice it, but people use that stuff so many different ways.
Just make sure you change your oil afterwards.
You may have too much ignition timming in your tune up. Or your running **** gas. Either way, pinging will burn valves and pistons, so get it fixed.... before your motor goes POW!
Just to pipe in here, I have used GM Top Engine Cleaner about a dozen times now on various cars, including my LS1.
I usually pour it in through the TB, slowly, and turn the car off myself after the can is empty. I have only let the Cleaner kill the engine once, and it was on a Cavalier... it started up just fine after 20min.
Also, I usually let the Cleaner sit for 15-20 minutes or so. I have never heard about leaving it overnight.

