i read the seafoam diy and ive personally done it before. i was told by using the vac line in the diy that it only hit 3 of the 6 cylinders. not sure if thats true or not if someone can verify. if it does only hit 3 cylinders where is the proper vac line to hit all 6 cylinders?

 

please see the main DIY for pic if needed- last few pages have good pics and corrected info

the CORRECT `master vac port` is at the TB to manifold connection on top of the engine.
remove the plastic engine cover, look for throttle springs- look forward, now see that vac hose the size of a little finger with a squeeze clamp on it?? thats the master vac port,
When you remove the hose it has a metal nipple coming from the manifold- that feeds direct into the mouth (after the throttle air plate) of the manifold and will split equally as it enters
It has massive suction compared to a smaller vac line that operates a selenoid

caution- use spray seafoam- Deep Creep, or if using hose into jar of seafoam- make sure you keep the hose end about an inch above the fluid= never in the fluid... or bad things will happen!

 

cool im going to do this tomorrow along with a spark plug change

 

Circled in red

 

thanks for the pic post JDJ

Note: the location of the vac port does vary slighty with year,
but it will be in that area- in front or on top of, or pointed rearward,...but when you remove the hose there will be a metal nipple sticking out of the manifold- only 1 does that--hard to go wrong--insert seafoam there slowly

give it a few days driving before plug change if able- let the cleaner keep working and stuff dissolve so its a clean workspace for new plugs
Wont hurt if you cant wait days-seafoam and drive after. let engine cool- change plugs
Do some blow out rpm on the test drive to be sure.

NEVER change the plugs on a hot engine!!! potential damage to plug threads can occur!


Seafoam and crud will not harm new plugs- just do your part in the process

 

I like to throw a can of seafoam in half a tank of gas at the same time of plug change.
Gets the injectors, and does follow up cleaning on the rest of the combustion system ..after main vac port dose

 

I acctually changed the plugs before the seafoam. that was a pita but we got it done. the seafoam was easy. threw a can in the gas tank as well. car over all seems smoother but it will only get better.

 

a can in a full tank is just under 1 to 1 ratio

for cleaning dose you want 2 oz seafoam per gal on fuel- thats just under half tank to 1 can seafoam

dilution below 3/4 oz to gal is not effective at cleaning

 

full can to full tank is ok for maitenance dose mid-year, between major cleanings

 

is it ok to use one full can to the vac port i remember reading in the diy use half a can

 

Ive never used any thing less than 1 full can. I usually use 3 cans when i do mine, one to the gas one to the oil and one to the vac line.

 

^thanks just wanted to clear things up i used one full can last time then i wondered if i should really be doing that

 

when is seafoaming recommended?

 

If you haven't done it yet, you should. Once a year should be a good timeline.

 

at about 3/4 of a can in vac port the engine will be barely running- thats what you want.
Then let it sit for 15 minutes and do the blow out drive

 

Hey is it bad to go more then 3/4

 

no you can try and get a little more in but its not a great deal more effective- active time and heat are the best things in the process, and noobs repeat after a month to finish up the job- then good for a year/15 -

its really difficult to keep the engine running at near idle, as the mix of fuel and seafoam in the plenums approaches 50/50 the engine has trouble running, and wont run on less than 50% gas. Thats when I call it good, stalled a few times then fog it to a stall

I would use some of the seafoam in a 2000 rpm application a few times during the can.
Makes smoke in a big way so do this on lonely place- not in your garage!! nor driveway
Near freeway frontage road is good if available
Point nose of car into the wind during application~

do the gas heavy dose of 1 can to just under 1/2 tank of gas, 2 oz to 1 gal

 

if using container of seafoam and a plastic tube to vac port at TB-
MAKE SURE to keep hose an inch or more away from top of fluid!!!!!

If you suck up a bunch at once by sticking the hose into the fluid- its really bad for the car, and a waste of good money
plus possible backwash shower for you when engine loads and stalls!

 

lol wow really? its been 11 years since i had this car i think i should! thx

 

with ethanol 10 gas its important to keep on top of the cleaning process-
May not be in the book but its important, many car makers are requiring this type of service.
carbon buildup and combustion byproducts are bad for the engine

 

make sure to get the TB air plate and lube the throttle springs-
I remove the throttle cables and lube them inside too- really helps pedal feel and return