Smokey engine

warrior · Post by **warrior** » Sat Aug 04, 2012 8:52 am

I have a friend that bought a 1992 1.6 mx5 a few months ago and the engine has problems. It drives well and seems to have plenty of power.

The problem is if you give it a boot full when you take your foot off the gas and come up to the lights etc it smokes out of the exhaust quite a bit.

Any ideas what the problem is?

Keith Jones · Post by **Keith Jones** » Sat Aug 04, 2012 9:14 am

Sounds like valve guides/stem seals. On overrun, with a high vacuum in the inlet, oil is being pulled into the combustion chambers.

last_resort14 · Post by **last_resort14** » Sat Aug 04, 2012 12:28 pm

Yea what Keith said. Assuming it's blueish smoke.

warrior · Post by **warrior** » Sat Aug 04, 2012 3:12 pm

yeah blue smoke, is it worth rebuilding the engine or swapping it over? Or just drive it until it dies?

na6*dori · Post by **na6*dori** » Sat Aug 04, 2012 8:40 pm

i can do them in place without taking head off if your in nelson area?

dynofiend · Post by **dynofiend** » Sun Aug 05, 2012 8:44 pm

Wouldnt worn stem seals tend to produce most smoke after the engine has been left shut off for a while? I always believed smoke on overrun usually indicated worn piston rings, for the same high vacuum reasons.

warrior · Post by **warrior** » Sun Aug 05, 2012 8:54 pm

wish I was in the nelson area! Thanks anyway

warrior · Post by **warrior** » Wed Aug 15, 2012 4:24 pm

my friend has decided to get the smokey engine fixed.

Can anyone suggest someone that can do this? Looks like its the valve guides/ stem seals.

Anything else that should be done or looked at while this is being done?

WideOpenThrottle · Post by **WideOpenThrottle** » Wed Aug 15, 2012 8:04 pm

Depends on what your friend wants to spend....may as well get the head reco'd at the same time & maybe do the pistons/ring etc if they can afford it but determine first what else needs doing.

You could easily spend $1500 on a reco head & gaskets...three grand doing up the motor.... or less than a thousand for a used replacement.

All depends on what your friend needs are.

dylann · Post by **dylann** » Wed Aug 15, 2012 8:30 pm

If he can do the work himself or get a few people to chip in it shouldnt work out more than a couple hundy even just paying the reconditioners to get the gaskets and shave the head.

warrior · Post by **warrior** » Thu Aug 16, 2012 10:50 am

any idea where he can get the parts from?

dylann · Post by **dylann** » Thu Aug 16, 2012 1:13 pm

Parts stores like repco and supercheap would be first thought - but theyre pretty expensive.
Ring around to smaller parts shops in your area aswell, but in my experience the reconditioners could get it cheaper than i would ever be able to even with their markup.

brownie · Post by **brownie** » Thu Aug 16, 2012 11:19 pm

Try your local BNT automotive or the more Mechanical division of repco,APPCO,Better yet make sure Genuine parts aren't badly priced anyway,Can be surprising some times

Smokey engine

Smokey engine

Who is online