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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So i discovered today that my cars blowing white-ish blue smoke out of the right exhaust tip. Its only under harder acceleration, not idle or speeding up slowly. Any guess at what this could be from? some things i checked was the coolant, theres no oil visible in it however it is low, i've also never noticed my oil level dropping however if i get on my car in WOT from about 30-90mph i will smell a little oil but nothing extreme, also the car has 130,000 miles and i believe atleast one of my catalitic converters is "going" bad due to my car smelling like "burnt cats" under acceraltion, not really sure what that smells like just what i've been told when cruizing with a friend in a car behind me
Anybody know what could be causing the smoke?
How can i fix this and what would it cost/involve me doing, if possible i rather do the work myself?
What could happen if problem is ignored, like will there be other damage to engine?
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2001 laser red gt
diamond in the rough
+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 01:23 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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