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Exhaust coming out of breather at idle?!? #972019 04/12/11 03:08 PM 04/12/11 03:08 PM
Joined: Mar 2003 Posts: 3,358 Berwyn, IL challenger70 OP master
challenger70 OP master Joined: Mar 2003 Posts: 3,358 Berwyn, IL	On the 440 in my Challenger I am getting what I assume is exhaust? out of my breather. I seems to be running fine other than this, what can cause this/what should I look at? It only happens at idle speeds and goes away when the rpms come up. I have a K&N breather on the passenger side and a pvc valve plumbed into the carb on the drivers side. I also have vaccume lines for the a/c controls and power brakes plumed inot the intake if that matters. I just replaced the pvc valve and breather as I thought they may be the problem.

Re: Exhaust coming out of breather at idle?!? [Re: challenger70] #972020 04/12/11 03:23 PM 04/12/11 03:23 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	possible valve seating issue?

Re: Exhaust coming out of breather at idle?!? [Re: challenger70] #972021 04/12/11 03:24 PM 04/12/11 03:24 PM
Joined: Apr 2007 Posts: 4,233 petaluma,ca. u.s.a. west master
west master Joined: Apr 2007 Posts: 4,233 petaluma,ca. u.s.a.	do a compression test first,hopefully it's not the rings or a cracked head.

Re: Exhaust coming out of breather at idle?!? [Re: mikemee1331] #972022 04/12/11 03:25 PM 04/12/11 03:25 PM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	my worn 383 does that, ring seal

Re: Exhaust coming out of breather at idle?!? [Re: ademon] #972023 04/12/11 03:30 PM 04/12/11 03:30 PM
Joined: Jan 2003 Posts: 74,974 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 74,974 U.S.S.A.	Quote: my worn 383 does that, ring seal Yep , it's blowby , do a leakdown test .

Re: Exhaust coming out of breather at idle?!? [Re: JohnRR] #972024 04/12/11 03:48 PM 04/12/11 03:48 PM
Joined: Mar 2003 Posts: 3,358 Berwyn, IL challenger70 OP master
challenger70 OP master Joined: Mar 2003 Posts: 3,358 Berwyn, IL	Quote: Quote: my worn 383 does that, ring seal Yep , it's blowby , do a leakdown test . Thanks for the replies, how do I do a leakdown test?

Re: Exhaust coming out of breather at idle?!? [Re: challenger70] #972025 04/12/11 03:55 PM 04/12/11 03:55 PM
Joined: Aug 2003 Posts: 12,291 Kent, Wa 340SHORTY Truck Nut
340SHORTY Truck Nut Joined: Aug 2003 Posts: 12,291 Kent, Wa	do all the tests you want,,, bottom line is your engine needs to be rebuilt... I am truckless..

Re: Exhaust coming out of breather at idle?!? [Re: challenger70] #972026 04/12/11 03:57 PM 04/12/11 03:57 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	http://www.carcraft.com/techarticles/116_0406_cylinder_leakdown_tester/index.html

Re: Exhaust coming out of breather at idle?!? [Re: 340SHORTY] #972027 04/12/11 04:01 PM 04/12/11 04:01 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: do all the tests you want,,, bottom line is your engine needs to be rebuilt... I fully agree. If you have a large amount of fumes coming out of the breather and the PCV isn't handling it there is only one cure. Ring job time. It could also be a hole in a piston piston or scored cylinder wall so there is no longer a ring seal. There is no short cut cure. Tear down time.

Re: Exhaust coming out of breather at idle?!? [Re: MoparforLife] #972028 04/12/11 04:35 PM 04/12/11 04:35 PM
Joined: Apr 2007 Posts: 2,327 Glendale, AZ 6 69L78Nova Banned. Forever.
69L78Nova Banned. Forever. 6 Joined: Apr 2007 Posts: 2,327 Glendale, AZ	Could be a head gasket too. Had the same problem on my Fury after I did the magnum head swap. I got a bad MP gasket....so bad it would blow the dipstick out of the tube at anything over 1,500rpm. Switched to Fel-pro and it runs like a top 1969 Nova 454/M21/3.31 Mild mid-11 second weekend cruiser 1994 F150 XLT Super Cab 2WD 5.0/4R70W/3.55 (Daily driver)

Re: Exhaust coming out of breather at idle?!? [Re: MoparforLife] #972029 04/12/11 04:36 PM 04/12/11 04:36 PM
Joined: Mar 2003 Posts: 3,358 Berwyn, IL challenger70 OP master
challenger70 OP master Joined: Mar 2003 Posts: 3,358 Berwyn, IL	Would a leakdown or compression test be better? Thanks for the help, I have never done either... Can you guys recomend a good leakdown or compression tester?

Re: Exhaust coming out of breather at idle?!? [Re: challenger70] #972030 04/12/11 05:08 PM 04/12/11 05:08 PM
Joined: Feb 2003 Posts: 10,200 Someplace you aren't S SomeCarGuy I Live Here
SomeCarGuy I Live Here S Joined: Feb 2003 Posts: 10,200 Someplace you aren't	I see new unused Mac testers on the local CL all the time for 80 or so. I think it is model # 120. I'm sure there are cheaper ones out there but if you can snag a good one for 100 bucks or less, why not?

Re: Exhaust coming out of breather at idle?!? [Re: SomeCarGuy] #972031 04/12/11 05:12 PM 04/12/11 05:12 PM
Joined: Feb 2003 Posts: 10,200 Someplace you aren't S SomeCarGuy I Live Here
SomeCarGuy I Live Here S Joined: Feb 2003 Posts: 10,200 Someplace you aren't	Oh and I've put about a zillion miles on 440's that had all kinds of blow by coming out of the breather. Oil turned black after 500 miles. Big deal. Unless you are planning a long trip I wouldn't be overly concerned about it. Some guys want stuff to be perfect, but I have learned over the years that as little as some of these cars get used, it just doesn't make sense to spend a bunch of money sometimes. I want my fair share

Re: Exhaust coming out of breather at idle?!? [Re: SomeCarGuy] #972032 04/12/11 05:24 PM 04/12/11 05:24 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Quote: Oh and I've put about a zillion miles on 440's that had all kinds of blow by coming out of the breather. Oil turned black after 500 miles. Big deal. Unless you are planning a long trip I wouldn't be overly concerned about it. Some guys want stuff to be perfect, but I have learned over the years that as little as some of these cars get used, it just doesn't make sense to spend a bunch of money sometimes. Here is somebody that lives in the real world. IMO even on a trip you can buy a lot of oil for what it will cost to overhaul. If it isn't smoking out the pipes you will be the only one that notices it. There can be quite a bit of breather fumes and still not even use much oil. Drive it. Also IMO there is not much sense in buying all the 'correct' tools for one job. you can usually rent them for very little if yo want to use them. Clean it, if it's Dirty. Oil it, if it Squeaks. But: Don't fix it, if it Works!

Re: Exhaust coming out of breather at idle?!? [Re: SomeCarGuy] #972033 04/12/11 05:34 PM 04/12/11 05:34 PM
Joined: Mar 2003 Posts: 3,358 Berwyn, IL challenger70 OP master
challenger70 OP master Joined: Mar 2003 Posts: 3,358 Berwyn, IL	Quote: Oh and I've put about a zillion miles on 440's that had all kinds of blow by coming out of the breather. Oil turned black after 500 miles. Big deal. Unless you are planning a long trip I wouldn't be overly concerned about it. Some guys want stuff to be perfect, but I have learned over the years that as little as some of these cars get used, it just doesn't make sense to spend a bunch of money sometimes. I agree but I would at least like to confirm the problem, problem is I don't know what I am doing, lol. Pretty much everything I do other than basic maintenance is the first time for me, so this forum is a huge help. Oh and it doesn't smoke out the exhaust.

Re: Exhaust coming out of breather at idle?!? [Re: 69L78Nova] #972034 04/12/11 05:46 PM 04/12/11 05:46 PM
Joined: Mar 2003 Posts: 3,358 Berwyn, IL challenger70 OP master
challenger70 OP master Joined: Mar 2003 Posts: 3,358 Berwyn, IL	Quote: Could be a head gasket too. Had the same problem on my Fury after I did the magnum head swap. I got a bad MP gasket....so bad it would blow the dipstick out of the tube at anything over 1,500rpm. Switched to Fel-pro and it runs like a top I did have a loose headbolt (copletely loose)when I checked while replacing valve cover gasket, wonder if that caused a head gasket problem

Re: Exhaust coming out of breather at idle?!? [Re: challenger70] #972035 04/12/11 05:59 PM 04/12/11 05:59 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	Quote: Quote: Could be a head gasket too. Had the same problem on my Fury after I did the magnum head swap. I got a bad MP gasket....so bad it would blow the dipstick out of the tube at anything over 1,500rpm. Switched to Fel-pro and it runs like a top I did have a loose headbolt (copletely loose)when I checked while replacing valve cover gasket, wonder if that caused a head gasket problem ummm, that would be a problem! when you discovered that did you check the torque on the others? you really should buy or rent the tester and check out your motor. i'm not real big on over-thinking or over spending this stuff but a loose cyl. head bolt could give you real problems.

Re: Exhaust coming out of breather at idle?!? [Re: mikemee1331] #972036 04/12/11 06:44 PM 04/12/11 06:44 PM
Joined: Mar 2003 Posts: 3,358 Berwyn, IL challenger70 OP master
challenger70 OP master Joined: Mar 2003 Posts: 3,358 Berwyn, IL	Quote: Quote: Quote: Could be a head gasket too. Had the same problem on my Fury after I did the magnum head swap. I got a bad MP gasket....so bad it would blow the dipstick out of the tube at anything over 1,500rpm. Switched to Fel-pro and it runs like a top I did have a loose headbolt (copletely loose)when I checked while replacing valve cover gasket, wonder if that caused a head gasket problem ummm, that would be a problem! when you discovered that did you check the torque on the others? you really should buy or rent the tester and check out your motor. i'm not real big on over-thinking or over spending this stuff but a loose cyl. head bolt could give you real problems. I retorqued all the bolts when I found the loose 1, it was the only loose one on both sides. I think I will get a compression tester and leakdown tester, unless a leakdown tester can test compression also? What are good brands, I don't need pro-grade, but don't want to buy junk, seems I can get Matco leakdown for about $130, and a sun compression tester for about $30??

Re: Exhaust coming out of breather at idle?!? [Re: challenger70] #972037 04/12/11 07:06 PM 04/12/11 07:06 PM
Joined: Apr 2010 Posts: 4,154 bethlehem pa M mikemee1331 master
mikemee1331 master M Joined: Apr 2010 Posts: 4,154 bethlehem pa	in all honesty i've never had a reason to own a leak-down tester. a compression tester is all i have and i think it was like $25 at the parts store. i would just start out with that and make sure you have good compression on that side where you had the loose bolt. i would do that only because i'd be worried about the head gasket having blown out around that loose bolt. that could cause major headaches. i might also be the source of your exaust. i think it might be worn valve 'stuff' and like said above, leave it be and drive the car! some leakage is normal.

Re: Exhaust coming out of breather at idle?!? [Re: mikemee1331] #972038 04/12/11 08:21 PM 04/12/11 08:21 PM
Joined: Feb 2003 Posts: 10,200 Someplace you aren't S SomeCarGuy I Live Here
SomeCarGuy I Live Here S Joined: Feb 2003 Posts: 10,200 Someplace you aren't	A leakdown tells way more than a comp tester. You can find out if it is the rings or valves with one.

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