Newb Sea Foam on a 99 SOHC

[BootyDo]

Hello,

I've searched and there are TONS of great threads on these boards about Sea Foam. After reading everything, I picked up a can and am ready to do it this weekend. But I'm still a little confused.

Right now, my 99 has 104k and has never been Sea Foamed. Over the past year or so, the idle is rough. Like electric rodeo rough. My plan is to beat the sun tomorrow morning so my neighbors don't come report me for something (live in the city). After reading about the 99 on a few threads, I'm going to go through the IAC hose. Unfortunately, it's going to have to be a one-man job...

On the "How To Seafoam Your 4.0 SOHC (With Pics)" thread, it mentions going through the Idle Air Valve vacuum hose. But I'm wondering if I need a T-Joint to do this properly? If not, how does it work? I'm under the impression that the car will stall if I remove that hose. Basically, is there anyone out there that did their SOHC through the IAC by themselves without using a T Joint?:scratch:

 

[Sogsnakebite]

I did my 98 sohc yesterday, just pulled the hose off the break booster, then bent the vacuum hose and while i allowed the vacuum to pull fluid out of the can i used my left hand to hold the throttle open slightly.


Took about 3 minutes to suck in a third of a can no stalls no issues

 

[BootyDo]

Hey Sogs, thanks for the advice! But I thought I read the consensus on all the threads saying the IAC method, (on the SOHC), was the best/easiest way to make sure you hit the whole engine. On that one sticky, it mentioned the BB missed a bit. Of course, I'd definitely not going off personal experience here

 

[Sogsnakebite]

I thought about it but decided on the BB route, definitly noticed a smoother idle and throttle response, i might try the other way next time

 

[celly]

Hey Sogs, thanks for the advice! But I thought I read the consensus on all the threads saying the IAC method, (on the SOHC), was the best/easiest way to make sure you hit the whole engine. On that one sticky, it mentioned the BB missed a bit. Of course, I'd definitely not going off personal experience here

I used to have a SOHC in my old '00 Sport. The IAC method us MUCH more effective than the BB method and is just about as easy to do as the BB method. I wish it was so simple in my current ride ('99 EB w/ 5.0 V8).

 

[BootyDo]

Thanks Celly! Question though: When you used to do the Sea Foam treatment on your 98, did you have to get a T joint or were you able to just pull the IAC tube?

 

[celly]

Thanks Celly! Question though: When you used to do the Sea Foam treatment on your 98, did you have to get a T joint or were you able to just pull the IAC tube?

I can't remember what I used (ditched the truck for my current ride 4+ years ago). I also had an aftermarket air intake setup so the hardware was slightly different than stock.

 

[BootyDo]

Thanks celly! I'm still a bit anxious to do this but now I'm wondering if I go to the parts store, what exact piece I'd have to buy for the T Joint. :scratch:

 

[BootyDo]

Sorry to bump, but anyone know of a piece I need or another alternative with the stock SOHC-PVC hose method?

 

[olskool reddevil]

When I did mine I just pulled the hose off the iac and used a small flex funnel it worked like a charm

 

[ThePhoenix]

1/3 of a can is too little...use 2/3 or 3/4 a can IMO

 

[BootyDo]

When I did mine I just pulled the hose off the iac and used a small flex funnel it worked like a charm

And it didn't stall out on you? Dangit - that's it? Seriously? I have a flex funnel for the lawnmower just sitting by. BLAH! I'm so trying this. Hopefully there's no trick to keeping the motor going.

And Phoenix, I couldn't agree more. Well, obviously not from experience but I was going to dump 2/3 in IAC hose and throw 1/3 in the gas. Next time I'm at the store, I'm going to even get another can. I might get in the habit of throwing 1/3 into the gas once a month. By then, it might be time to redo the engine again. Still a bit leery about the crankcase...

 

[BootyDo]

Hey All,

just posting a follow-up. No dice so far on the SeaFoam. I tried pulling off the IAC hose with the car running and it just sputters right out.

Any thoughts/ experiences on getting it through the IAChose with the car running? Oh, I know this might show just how stupid/noob I am, but I'm assuming the hard plasitic one closest to the MAF is the right hose...right?

 

[olskool reddevil]

You need to keep the engine running by increasing the rpms by hand. Just open the throttle by hand then pull the hose off and pour the seafoam in. You will have to feather the throttle by hand to keep the engine running until all the seafoam is in then just let the truck stall.