4.6L (1996-2004 Modular) MustangTechnical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within. Sponsored by Cruizin Concepts
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+1 with Uber.
You might want to change the PCV valve and possibly add a "catch can" between the PVC valve & intake fitting. At WOT you may be sucking oil thru/past the PVC valve.
This is an inexpensive thing to try.
Depending on where the intake end of the hose is plugged in could explain why the smoke is only on one bank.
Start with the easy stuff before assuming it is in need of major engine work, you just might get lucky.
Valve seals/guides are "usually" both banks equally, as well as heavy blow-by.
Head gasket issues are one bank.
Broken rings are one bank.
Doing a compression test will tell you a lot, and maybe eliminate a lot of possible issues.
Owned 32 Mustangs & Counting.
Fondest memories: 1969 428CJ, it was stolen 60 days after complete rebuild.....
Worst memory: 1965 Notch back, rolled end over end, 2 days after rebuild, fractured Strut-bar..... Lesson learned: ALWAYS upgrade the front suspension of an early Mustang!
Worst mustang: 1974 4-cyl auto (it was cheap, I was broke...).
Favorite body style 1965/66 Fastback.
Present stable: 1997 SVT Cobra, 50k miles, Paciffic Green w/ tan leather & lots of goodies.
Last edited by Old Mustanger; 04-30-2012 at 02:23 PM.
to rule out worn rings do a compression check....real easy. just make sure your weakest cylinder is within 25% of you highest pressure reading. if it is then your doing good there. i mean 130k isn't that high mileage, but its when things start to get alil loosey goosy
rio red 1998 gt:
bbk cold air intake, 75mm t/b and a&l plenum, udp, pi intake manifold, bullet stage 2 cams, ported npi heads, bbk shortie headers, slp catted-x, loudmouth 1's, 3.73 gears, eibach prokit with steeda cc plates, agx struts, subframe connectors, plenty more to come!!!
Thank you very much everyone, I took you guys advise and changed the PVC valve yesterday and will check for smoke in an hour or two and if it's not that then I'm going 5.4 anybody know if the stock auto tranny is a direct bolt on
2001 laser red gt
diamond in the rough
As others have said, if it's just a little blow by, a catch can would remedy that. Our billet catch can is only $89 with a Lifetime Guarantee if you use the mf.com discount, and it's very effective at catching the oil vapor. http://www.uprproducts.com/mustang-b...erator-79.html My '06 GT was occasionally puffing smoke at startup, but that went away after I installed a UPR catch can on it.
Regarding the 4.6/5.4 swap, I believe the tranny bolts on the same, but I'm not positive.
i hope not, ugh i was gunna sell this thing in 2 months and try and get a 4v too
Looks like it's time to go 4v anyhow, haha. But seriously, good luck :/
-1965 Coupe- Mustang II Suspension, Coil Overs, Disc brakes, Down for V8/T-5 Conversion
-2000 GT- Sold
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