Sea Foam Deep Creep

Posted: Mon Oct 21, 2013 12:22 pm

Found a new to me product ( Sea Foam Deep Creep). I know all about Sea Foam but never heard of Deep Creep this stuff is amazing.

I have an 03 Grand Cherokee Overland with with 4.7 H O engine and I was getting a miss fire code on the # 3 cylinder. So no big deal change the plugs right? Not so easy. All the plugs were frozen in the heads.

As it seems the plugs which they tell you are good for 130,000 miles are not. We bought the jeep 3 years ago and I never changed the plugs there was never an issue ( if it ain't broke don't fix it). So I tried last week to get the plugs out and nothing would move, was useing a 2 1/2 foot breaker bar and nothing. Did a little research and found that the carbon after a while works it's way up into the threads and freezes the plugs rock solid. Also that it is a hit or miss if a plug snaps it's a $2000.00 job minimum.

So I figured I just need to get a solvent to loosen them up. I tried everything for WD 40 to PB Blaster to tranny fluid nothing worked. Went up to the auto store and found this stuff Deep Creep. It boosted that it eats through varnish and rust and carbon. So what the hell I got the engine up to opperating temp and shot this stuff in and let it sit till the engine was cool.

Every plug came out like there was nothing wrong except for one which with some effort and back and fourth motion gave in and came out after about 15 minutes. This stuff is great and as it seems has many applications. It is a staple now for me on frozen stuff.

Posted: Mon Oct 21, 2013 12:32 pm

I'll try it. I changed plugs in my old Tundra a few weeks ago and they were tough to move out as well. I used PB Blaster. Of course the toughest one to remove was the hardest to get at.

Posted: Mon Oct 21, 2013 12:59 pm

every garage should have some...i do!!

Posted: Mon Oct 21, 2013 2:47 pm

mp33dave wrote:

every garage should have some...i do!!

Dave never heard of the stuff til yesterday great stuff

Posted: Mon Oct 21, 2013 2:54 pm

Don't forget to put anti-seize on the threads before you put the new ones in.

CB1100F Joined: May 13, 2005 Posts: 3217 Location: NE OHIO

Bandit65 wrote:

Don't forget to put anti-seize on the threads before you put the new ones in.

+1 copper anti-seize

Hawk Joined: Jun 11, 2007 Posts: 349 Location: NV

Definitely copper anti-seize. The normal stuff will get cooked off at head temps.

Does the 4.7 have aluminum heads? I'd guess that the aluminum/steel combo has a lot more to do with frozen plugs than carbon build up (though I could be wrong). I've also never seen any plugs rated for 130k miles...I've seen 100k with iridiums, but never seen 130k. That's just crazy...I can't imagine any plugs actually being useful after that many miles. Go manufacturers.

aa

Posted: Mon Oct 21, 2013 5:20 pm

I keep a can of Deep Creep on my desk, it's handy stuff, and the can sprays upside down too.

Posted: Mon Oct 21, 2013 6:05 pm

Plugs need anti-sieze,especially aluminum heads.

The bottom end gets coated with carbon and if the first thread will wind all the threads above it out with the plug. The aluminum gauls and "picks up" the rest of the threads. Sometimes back and forth works,most times not.

Since the first SOHC 750 we used anti sieze,copper is best.but anything is better than nothing.

Posted: Mon Oct 21, 2013 8:28 pm

+1 for Deep Creep and PB Blaster

Posted: Mon Oct 21, 2013 9:02 pm

Cecil14 wrote:

Definitely copper anti-seize. The normal stuff will get cooked off at head temps.

Does the 4.7 have aluminum heads? I'd guess that the aluminum/steel combo has a lot more to do with frozen plugs than carbon build up (though I could be wrong). I've also never seen any plugs rated for 130k miles...I've seen 100k with iridiums, but never seen 130k. That's just crazy...I can't imagine any plugs actually being useful after that many miles. Go manufacturers.

aa

It's my bad for not doing a plug change when we got the jeep but all worked out good. It does have aluminum heads. Every mechanic I talked to said it is the carbon that locks them up who knows. But I did put the copper anti seize on it anyway.

The plug that I took out were shot I think the were original plugs. The new plugs were gapped at .040 the ones I pulled out were .060

Posted: Mon Oct 21, 2013 9:09 pm

spike wrote:

Cecil14 wrote:

Definitely copper anti-seize. The normal stuff will get cooked off at head temps.

Does the 4.7 have aluminum heads? I'd guess that the aluminum/steel combo has a lot more to do with frozen plugs than carbon build up (though I could be wrong). I've also never seen any plugs rated for 130k miles...I've seen 100k with iridiums, but never seen 130k. That's just crazy...I can't imagine any plugs actually being useful after that many miles. Go manufacturers.

aa

It's my bad for not doing a plug change when we got the jeep but all worked out good. It does have aluminum heads. Every mechanic I talked to said it is the carbon that locks them up who knows. But I did put the copper anti seize on it anyway.

The plug that I took out were shot I think the were original plugs. The new plugs were gapped at .040 the ones I pulled out were .060

They burn off and the gap opens with age and use. I experienced the same thing with mine. I think I see better mileage and it runs stronger it seems. My work truck had 200 thousand on it and probably never been changed. Mechanic quoted me 200 dollars to change them when I had tires rotated and oil change, said F that and did it myself for next to nothing. I don't blame him, he needs to keep in business, but come on, 200 bucks to change 8 plugs? Half hour job at the most.

Posted: Mon Oct 21, 2013 9:21 pm

sounds like it would also be good for decarbonizing the heads as well.

Posted: Mon Oct 21, 2013 10:32 pm

Motocanada wrote:

sounds like it would also be good for decarbonizing the heads as well.

Love to but I am not pulling heads unless you know of another way. I am open to suggestions.

Posted: Mon Oct 21, 2013 10:58 pm

This is common on the 4.6 and 5.4 ford engines, it's caused by carbon build up with the long reach spark plugs. The OEM plugs are two piece and the carbon causes the plug to get stuck in the head, you try to take them out and they break in two leaving the tip in the head.

There is a TSB on them, you are suppose to put a tablespoon of carb cleaner down each plug hole and let it sit overnight before attempting removal, if they break there is a tool available to remove the left behind piece.

The aftermarket has come out with one piece spark plugs to solve the breakage problem.

Posted: Mon Oct 21, 2013 11:25 pm

cbxsix wrote:

This is common on the 4.6 and 5.4 ford engines, it's caused by carbon build up with the long reach spark plugs. The OEM plugs are two piece and the carbon causes the plug to get stuck in the head, you try to take them out and they break in two leaving the tip in the head.

There is a TSB on them, you are suppose to put a tablespoon of carb cleaner down each plug hole and let it sit overnight before attempting removal, if they break there is a tool available to remove the left behind piece.

The aftermarket has come out with one piece spark plugs to solve the breakage problem.

Thankfully that is not what I had to deal with. But it is nice to know for the future.

Posted: Tue Oct 22, 2013 1:10 am

This happened to a buddy of mine. He snapped off two out of eight. Expensive to get fixed. Good info here.

Posted: Tue Oct 22, 2013 1:40 am

you can spray deep creep all in the head...lol

meaning when i have the exhaust off...all ports get a squirt