Some SeaFoam fun

[a social dsease]

Did some work on the car today, replaced the passengers side headlight which had a massive rock-chip in it. Then g-m came over with his 300zx and we had some fun with seafoam, started with his car, then did mine. Both cars produced massive clouds of smoke which engulfed my entire house, cars were stopping to nsee what was going on, it was pretty funny.

http://i2.photobucket.com/albums/y13/scottc420/PICT7677.jpg

http://i2.photobucket.com/albums/y13/scottc420/PICT7678.jpg

http://i2.photobucket.com/albums/y13/scottc420/PICT7680.jpg

http://i2.photobucket.com/albums/y13/scottc420/PICT7682.jpg

[Cooked Rice]

Might want to check your o2 sensor now...

[adam c]

eh ur not supposed to dip the hose in the bottle. you can run a risk of hydrolocking

but still.. smoke = good fun for all

[g-m]

I'll pull codes tommorow
Everything seemed good though, we did high rpm rips to flush things out as recommended by my z32 forum

[g-m]

http://www.300zxclub.com/showthread.php?t=91931
I trust these guys

[rmk]

hahaha. do you live in oakridge? if so you are are right down from my folks :thumbsup:

[g-m]

ahaha yea it was in oakridge
during the runs it was like we were leaving contrails down the road

I think my upper plenum gasket is leaking though... fun for next weekend

[tm88]

For ultimate results, head out onto a open highway and pull over and do it there then when u fire it up open the throttle for a solid 10 min down the highway at some good speed....obviously no more than the speed limit:thumbsup:

[bituerbo]

Problem with seafoaming an older car is the sludge that's holding the headgasket together gets flushed out.

[89s1]

I have also heard not to do it to early 90s motors, they rely on the buildups too much :dunno:

[g-m]

somehow I just can't see an automotive engineer designing a pressure vessel that relies on carbon buildups as a primary containment mode. Maybe in the states...

Seafoam doesn't cause problems (except for occasional O2 sensor fouling that can be solved the same as a carbon buildup on the sensor) but it does occasionaly bring existing problems to notice.

Personally I'd rather know everything thats wrong with my engine than live in blissful ignorance and have it fail 'unexpectedly' one day.

Now I know I have to replace my upper plenum gasket. Next weekend I'll do that and have eliminated a boost leak. Without the seafoam thats a hard one to locate, even with a tester and listening hose. I'll replace all the vacuum lines under there also while I'm at it.

[bituerbo]

Originally posted by g-m
somehow I just can't see an automotive engineer designing a pressure vessel that relies on carbon buildups as a primary containment mode. Maybe in the states...

Seafoam doesn't cause problems (except for occasional O2 sensor fouling that can be solved the same as a carbon buildup on the sensor) but it does occasionaly bring existing problems to notice.

Personally I'd rather know everything thats wrong with my engine than live in blissful ignorance and have it fail 'unexpectedly' one day.

Now I know I have to replace my upper plenum gasket. Next weekend I'll do that and have eliminated a boost leak. Without the seafoam thats a hard one to locate, even with a tester and listening hose. I'll replace all the vacuum lines under there also while I'm at it.

It's the same reason why everyone says don't run synthetic oils on high-km motors, unless they have always been run on synthetics. Mineral oils do result in more buildup, as it burns off (leaving deposits) under extreme heat while synthetic boils (which returns to it's liquid state upon cooling. This deposits buildup is what eats away at gaskets/seals over many years and hundreds of thousands of kilometers. Switching to a synthtic with a high-detergent washes away this buildup weakening the gaskets, as the buildup essentialy replaces the gasket material which it breaks down.

Many people experience oil leaks after running seafoam through the crankcase on high-km engines, I've witnessed this twice first hand.

[g-m]

I guess it was time for new seals for those people then
All seals should be periodically replaced imo anyway, I'm doing intake seals this weekend and (time permitting) valve seals.

Head and crank seals are a little harder to get to though, but mains should be done on clutch replacement and the rest, periodically. Whenever you're in there