smoky engine - Hyundai Performance Forums

bonester · 02-13-2003, 10:46 PM

I have a 95 Excel X3 with an indicated 95000Km.....It has got very hot several times (blocked radiator) and if I can believe the mileage, has sat around unused for ages. Inside the valve cover is a lot of black sooty stuff. I have added a bottle of stop leak (for valve seals) and a bottle of stop smoke, but it still smokes. Compression test is as new. What do you think? Overheating glazed bores/ stuffed oil rings???? Any ideas? Thanks!
8D

**MechaniX_034** · 02-14-2003, 12:59 AM

Busted valve seals bro.:dead:

cclngthr · 02-14-2003, 01:56 AM

Quote:

Originally posted by bonester
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I have a 95 Excel X3 with an indicated 95000Km.....It has got very hot several times (blocked radiator) and if I can believe the mileage, has sat around unused for ages. Inside the valve cover is a lot of black sooty stuff. I have added a bottle of stop leak (for valve seals) and a bottle of stop smoke, but it still smokes. Compression test is as new. What do you think? Overheating glazed bores/ stuffed oil rings???? Any ideas? Thanks!
8D
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I would first suspect a blown head gasket. I also would check the head for leaks while it is out of the car.

Doing this on a bench will tell you if it is the valve seats or something else.

Lobert · 02-14-2003, 07:40 AM

I'd have to agree with MechaniX on this one.

Mach5 · 02-15-2003, 07:54 AM

valve seals
mech, you beat me to it bastard lol:lol:

bonester · 02-15-2003, 08:52 AM

Thanks guys! Now here'a a curly one: How can I tell for sure that it is valve seals? I got a quote from the local H dealer, and it costs $50 for the seals, and $150 to fit......I can get a complete engine for $600, so I would like to know how to tell which way to go. Ta :??:

Scrud · 02-15-2003, 09:05 AM

i had a really smokey engine once, and all its was, was a kink in the vacuum hose! easy fixed!

**MechaniX_034** · 02-15-2003, 09:30 AM

Hint here is the sooty stuff; I'm guessing the busted seal/seals are on the exhaust side. These valves bake hotter than Betty Crocker in operation. Since compression is as new, shouldnt be the gasket either. BTW I forgot to ask, is the smoke white-ish or black and stinky?:hmmm:

bonester · 02-15-2003, 09:42 AM

smoke is whitish...thanks for your help! :lol:

bonester · 02-15-2003, 09:43 AM

Oh and it smells really bad, and the exhaust pipe is BLACK.