Welcome to Mustang Evolution.
|
  |
|
|
|
07-26-2009, 08:35 AM
|
#1
|
|
  |
|
Grayish/Blue Smoke
|
|
Registered User
Join Date: Jul 2008
City: Somerville
State: Alabama
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
|
Hi,
My 64 1/2 Mustang Convertible is set up with a 93 Mustang short block with AFR 165 heads, 1.7 roller rockers, E303 cam, Edelbrock RPM intake, Edelbrock carburetor, and JBA headers. The engine is connected to a 98 4R70W transmission, controlled by a Baumann TCS. When the engine is idling, revved and held at any RPM, or driven normal, everything works great (no smoke). The problem is when I really get on it from a dead stop or even when at highway speed a lot of grayish blue smoke comes out of the exhaust and continues as long as I keep the pedal to the metal. I guess I could just drive normal, NOT! Any thoughts?
Doug
|
|
|
|
|
Are you a Mustang fan? If so we invite you to join MustangEvolution.com. Once you join you'll be able to post messages in our forums and upload pictures of your Mustang. You will also be able to browse our site with limited advertisements as a thank you for joining our community. What are you waiting for? Join up now and tell us a bit about your Mustang!
|
|
07-26-2009, 06:04 PM
|
#2
|
|
|
|
Re: Grayish/Blue Smoke
|
|
Registered User
Join Date: Jul 2008
City: Somerville
State: Alabama
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
|
just changed oil a week ago and now this afternoon the rockers are making clacking noise like the the lifters are not pumping up. I thought they were hitting the valve covers, since i used stock covers with two gaskets, so I took them off and let the engine idle (yea a little oil on the headers), still same sound. The valves were adjusted by a professional ford Mechanic, so I know they are adjusted correct. It kinda comes and goes, which makes me think lifters. |
|
|
|
|
|
07-26-2009, 06:19 PM
|
#3
|
|
|
|
Re: Grayish/Blue Smoke
|
|
please come try to take my guns!!!!
Join Date: May 2007
City: Denham Springs
State: Louisiana
Posts: 3,472
Thanks: 16
Thanked 71 Times in 66 Posts
|
the smoke is def. oil. it is common for older lifters. to have the seals crack and they loose their prime after sitting for awhile.
__________________
06 GT custom mandral bent exhaust, borla mufflers, o/r x-pipe, SCT2, tuned by Wes@TPS, CAI, 4:10 gears, ZEX 150hp wet shot, 03chrome cobra wheels/ 11.76E/T at 115MPH & its my wife's car  1970
Chevelle SS 454 big block Old School 500hp 
Chevelle
|
|
|
|
|
|
07-27-2009, 09:32 AM
|
#4
|
|
|
|
Re: Grayish/Blue Smoke
|
|
WTF^^...
Join Date: May 2003
City: Birmingham / Florence
State: Alabama
Posts: 29,722
Thanks: 12
Thanked 149 Times in 137 Posts
|
yup, a little is getting by the valve seals perhaps
__________________
2003 REDFIRE COBRA #3938 of 5082 @ 05/27/2003 1 of 414
MGW Shifter, Borla Stinger Polished Catback, JLT Intake, MM FLSF Connectors, MM C/C Plates, H&R Race Springs, IRS Bace, MRT Hood Struts, True Forged Mach 5 18x9 (275/35/18) 18x10 (295/35/18) wheels, Other Mods, My Pics, High Res Pics
400rwhp/380rwtq - Click mods for more info!
|
|
|
|
|
|
07-27-2009, 09:44 AM
|
#5
|
|
|
|
Re: Grayish/Blue Smoke
|
|
Registered User
Join Date: Jul 2008
City: Somerville
State: Alabama
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
|
The heads are brand new AFR 165 less than a 100 miles since install. And how do you put a picture of your car on you post? Thanks
Doug |
|
|
|
|
|
08-04-2009, 10:21 PM
|
#6
|
|
|
|
Re: Grayish/Blue Smoke
|
|
ME hometown supporter
Join Date: Jan 2005
City: Harvest
State: Alabama
Posts: 1,009
Thanks: 0
Thanked 4 Times in 4 Posts
|
smoke on acceleration is getting past the rings. smoke on deceleration is in the heads.
don't take that too seriously but makes a good rule of thumb.
in a low gear like 2nd or 3rd run the car up to high RPM and just let the engine brake for a while, if you see alot of smoke on the decel its usually the valve guides.
__________________
5.4 liters of pushrod 
|
|
|
|
|
|
08-05-2009, 09:44 AM
|
#7
|
|
|
|
Re: Grayish/Blue Smoke
|
|
WTF^^...
Join Date: May 2003
City: Birmingham / Florence
State: Alabama
Posts: 29,722
Thanks: 12
Thanked 149 Times in 137 Posts
|
why do the valve guides only allow leaks on decel vs accel?
__________________
2003 REDFIRE COBRA #3938 of 5082 @ 05/27/2003 1 of 414
MGW Shifter, Borla Stinger Polished Catback, JLT Intake, MM FLSF Connectors, MM C/C Plates, H&R Race Springs, IRS Bace, MRT Hood Struts, True Forged Mach 5 18x9 (275/35/18) 18x10 (295/35/18) wheels, Other Mods, My Pics, High Res Pics
400rwhp/380rwtq - Click mods for more info!
|
|
|
|
|
|
08-05-2009, 11:35 PM
|
#8
|
|
|
|
Re: Grayish/Blue Smoke
|
|
ME hometown supporter
Join Date: Jan 2005
City: Harvest
State: Alabama
Posts: 1,009
Thanks: 0
Thanked 4 Times in 4 Posts
|
deceleration causes high vacuum condition in cylinders which will draw oil through the valves and the rings... though rings will leak alot more in hard acceleration so if you get no smoke in acceleration and some in decel. then its usually in the head.
valve guides wont really leak in accel because the pressure of the cyclinders keeps them sealed off pretty well.
eventually either of these two conditions will show through at idle or light drive.
P.S. if your running an evac pump then all of this is naught.
__________________
5.4 liters of pushrod
|
|
|
|
|
|
08-27-2009, 02:33 AM
|
#9
|
|
|
|
Re: Grayish/Blue Smoke
|
|
Registered User
Join Date: Jun 2008
City: Honolulu
State: Hawaii
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
|
Compression check, wet and dry, should give a good indicator. also, how do the plugs look. You need to see if it how many and which cylinders are affected. |
|
|
|
|
|
