used pro chamber caused smoke?

dresmnkaos · Jun 23, 2007

i installed a used pro chamber a hour ago. took the car down the road to test the new pipe out. took off pretty hard and smoke came out the tail pipes .

you guys are prob shaking your head right now but i jus wanna make sure its from the pipe being used. the car the pipe came off of could have bad rings or valve seals causing the car to smoke. so, when i took off its jus blowing out that carbon that has built up on the inside walls of the pipes. im 100% sure my car didnt smoke b4 the pipe exchange.

it jus kinda freaked me out when i seen a big blue-ish cloud puf outta my tail pipes.

Gearbanger 101 · Jun 23, 2007

If you had cats on your previous mid-pipe, they were probably masking some of the smoke. The general rule of thumb, is that if it's bluish and smells like burning oil, it's probably a little blow-by from the rings or worn valve seals. If it's black, it could be just a little rich in the A/F ratio side. And if it's white, with a sweet smell, it's probably antifreeze.

My guess....is that it's probably nothing to worry about. 5.0HO's are notorious for burning a little oil under hard throttle. What kind of mileage is on the engine? Have you ever had a compression test done?

vristang · Jun 23, 2007

dresmnkaos said:
i installed a used pro chamber a hour ago. took the car down the road to test the new pipe out. took off pretty hard and smoke came out the tail pipes .

you guys are prob shaking your head right now but i jus wanna make sure its from the pipe being used. the car the pipe came off of could have bad rings or valve seals causing the car to smoke. so, when i took off its jus blowing out that carbon that has built up on the inside walls of the pipes. im 100% sure my car didnt smoke b4 the pipe exchange.

it jus kinda freaked me out when i seen a big blue-ish cloud puf outta my tail pipes.

Put some miles on it, and it should get better...

If the car starts running different from how it ran before the used pipe went on, then there may be issues...

The used pipe is probably just full of oil though...

jason

dresmnkaos · Jun 25, 2007

i put 150 mi on the pipe this weekend. results are still the same as before. its not smoking when im cruising, just when im idling and under hard load

Blown331LX · Jun 25, 2007

I had this same problem when I put on a brand new off road X-Pipe on my 86 GT a few years back. My motor had 190 K on it ran perfect but stem seals and rings were a little worn. I was worried about the smoke I put my stock H pipe on with cats and smoke went away. Ended up running the X pipe anyway cause the sound and power out weighed the smoke factor. Youll be fine just check your oil level every 2,000, I bet itll be a quart low. This is considered normal, 1 qt of comsumption every 3,000 miles.

MCRParts.com · Jun 25, 2007

A used pipes not gonna may your car smoke. Might me something worn in the motor.

Gearbanger 101 · Jun 26, 2007

Like I said earlier, it probably could use a freshening up (new valve seals, valve job, rings, etc) but it's not likely something to worry about.

ACSPONY · Jun 26, 2007

My new o/r x smoked a little right after installing it for about 20mins, but I'm sure that was just the coating on the pipes burning off because it doesn't smoke anymore. If you installed a used pipe, it's probably engine-related.

vristang · Jun 26, 2007

With PCV systems... increasing the VE of the motor seems to lead to an increased chance of oil being pulled from the crankcase...

Not sure how exhaust improvements would impact that, but it seems reasonable...

Just a hunch
jason

dresmnkaos · Jun 26, 2007

vristang: every now and then the pcv pops outta the manifold. could this be contributing to the problem

vristang · Jun 26, 2007

dresmnkaos said:
vristang: every now and then the pcv pops outta the manifold. could this be contributing to the problem

Yikes

I would say that IS the problem...

Too much crankcase pressure, and not enough ventilation...
That can cause problems with valve seals and piston ring sealing as well, even if the problem isn't caused by ring sealing...

Is the hose between the TB and valve cover in place?
You should probably do a compression test, and see what the numbers are.
A leakdown test would be nice too, if you have the equipment...

If the compression and leakdown test come back good, then you can look into increasing the capacity of the pcv system.
If the compression and leakdown numbers aren't good, then you will want to consider a rebuild...

jason

dresmnkaos · Jun 27, 2007

could the pcv be clogged? TB is throttle body, right? why would i have to increase the pcv system capacity on a stock motor?

vristang · Jun 27, 2007

dresmnkaos said:
could the pcv be clogged? TB is throttle body, right? why would i have to increase the pcv system capacity on a stock motor?

Yep... TB = throttle body

I didn't realize you were all stock... Definately do the compression and leak down tests...

It is possible that the pcv just clogged. I have never seen this happen though.
Does it rattle when you shake it by hand?

I guess installing a new pcv would be a good starting point, but if that doesn't make a difference, then you need to do the compression/leakdown test.

jason

dresmnkaos · Jun 28, 2007

yeah, this mustang is all stock. my coupe is totally twisted though.

ok stopped by autozone, new pvc vave. comp test will be done this weekend. what numbers am i looking for on stock motor w 153k mi? thanks for your help man!

vristang · Jun 28, 2007

dresmnkaos said:
yeah, this mustang is all stock. my coupe is totally twisted though.

ok stopped by autozone, new pvc vave. comp test will be done this weekend. what numbers am i looking for on stock motor w 153k mi? thanks for your help man!

For a compression test you are looking to have all the numbers within about 10%.
What the numbers are will depend on the CR....

That is why a leakdown test is nice to do as well.

A compression test will tell you if there is one cylinder that is not sealing.
The leakdown test will tell you (quantitatively) how much 'blowby' there is.

Both of the tests combined will give a good impression of how healthy the motor is...

jason

MCRParts.com · Jun 28, 2007

If the pvc is popping out something is pressurizing the crankcase. Looks like you're on the right track with good advice.

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