smokes in the morning or when sits for hours

15

Asked by Mar 23, 2010 at 07:10 PM about the 1993 Mazda MX-5 Miata Limited

Question type: Maintenance & Repair

runs great other than that that it smokes for about half mile or so in the mornings or when i let it sit for a couple hours it is oil you can smell it . other people with this kind of car has same problems ive heard from oil rings sticking to valve guides , and valve seals. any help . thank you for your time .

4 Answers

8,580

It sounds like you need some new valve guides. You will need to pull the head and have new ones pressed in. There is a possibility that there could be a blockage in the PCV system. This could pressurize the head and force oil past the guides.

1 out of 1 people think this is helpful.
15

thanks its diff. better than rings

1 out of 1 people think this is helpful.
8,580

???

1 out of 1 people think this is helpful.

It sounds like the oil that puddles in the head when you shut off the engine is leaking down past the valve stems into the combustion chambers. This oil will normally burn off when you first start the engine after it has set awhile, hence the smoking for a short period of time. Larry is right on about valve guides, but I'll suggest a less expensive fix that might give you some temporary relief. The valve guides are generally bronze bushings that are pressed into the head to keep the valves centered to the valve seats. They are not the sole seal that keeps oil out of the combustion chamber, however. There are also valve seals that are made of neoprene or other synthetic material that really do the sealing. These deteriorate in time, particularly if the valve guides are worn significantly. Sometimes, mind you I said sometimes, you can get by by just replacing the seals. This can be done without removing the heads which is obviously a lot less expensive. Good luck Joe

Your Answer

Add photo

Related Questions

  • 2012 miata wont start. I was driving it and stopped at a red light and it died. replaced many parts already and still nothing. I have spent numerous hours researching this and still nothing. 4 answers

    Any suggesstions on why it won't start. And what else can I try. I have spent numerous hours researching this and have gotten nowhere.

    Mazda MX-5 Miata

    -

    Maintenance & Repair

  • Battery dies fan was always running 2 answers

    The fan on the right as you face the engine was running after I put in the new battery and started the car. It started right. I noted a fan running but bought this might be normal. Four hours la...

    Mazda MX-5 Miata

    -

    Maintenance & Repair

  • miata dies when gas pedal depressed 2 answers

    I have owned my Miata for 2 years - 3 times this has happened - after driving an hour or so- when I press the gas pedal it acts like it wants to die - it has a whining noise under/behind the driver se...

    2002 Mazda MX-5 Miata SE

    -

    Maintenance & Repair

  • Gasoline odor 1 answer

    After I have driven my '96 Miata for a half-hour or more and park it in my garage, it gives off a strong gasoline odor for the next couple of hours. There are no leaks, no puddles on the floor. It...

    1996 Mazda MX-5 Miata

    -

    Maintenance & Repair

  • 2016 Mazda MX 5 fog lights 11 answers

    Thought this might be of interest to some, but would also appreciate any further information or thoughts. My new MX 5 GT does NOT have fog lights, contrary to what the small, abbreviated handbook sh...

    2016 Mazda MX-5 Miata Grand Touring Convertible

    -

    General

MX-5 Miata

Looking for a Used MX-5 Miata in your area?

CarGurus has 4,394 nationwide MX-5 Miata listings starting at $2,300.

ZIP:

Search Mazda MX-5 Miata Questions

Mazda MX-5 Miata Experts

#1 Michael Kane
Michael Kane
Reputation 1,860
#2 Tom Demyan
Tom Demyan
Reputation 1,090
#3 Racer_X
Racer_X
Reputation 380
View All

Related Models For Sale

Used Ford Mustang
642 Great Deals out of 36,932 listings starting at $2,800
Used Chevrolet Corvette
339 Great Deals out of 19,713 listings starting at $3,688
Used BMW 3 Series
1,610 Great Deals out of 38,816 listings starting at $1,250
Used Chevrolet Camaro
620 Great Deals out of 38,658 listings starting at $2,995
Used Honda Civic
1,042 Great Deals out of 62,661 listings starting at $1,500

Used Cars For Sale

2016 Mazda MX-5 Miata For Sale
11 Great Deals out of 2,788 listings starting at $19,488
2015 Mazda MX-5 Miata For Sale
10 Great Deals out of 172 listings starting at $14,788
2014 Mazda MX-5 Miata For Sale
5 Great Deals out of 111 listings starting at $13,912
2013 Mazda MX-5 Miata For Sale
7 Great Deals out of 132 listings starting at $13,980
2012 Mazda MX-5 Miata For Sale
4 Great Deals out of 112 listings starting at $10,995