Classic/Antique Car Repair/mazda rough running


My father has a 1987 Mazda B2000 truck that he got at an auction.  He has gotten it to run better, but he states it runs rough when the outside temperature is warmer.  He says it runs better when it is cold outside.  Any ideas what might be the issue going on here?  What should we be checking out?  More than likely some emissions crap.  Thanks for any info.

He may have a small air leak in the intake manifold or
around one of the hose that leads to the intake. Changes
in temps will cause this problem. If it has a carburetor,
an adjustment to it could solve the problem. If carbs cars
the air temp on the outside and the humidity affects the air/fuel mixture.

Classic/Antique Car Repair

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Vern Bullock


I can answer most questions about autos built in the 1920 through 1990. Mechanical issues and technical questions are my expertise. I also have a general knowledge of most older automobiles. Keep in mind, I can only provide answers if the questions are very specific and complete. Without details, I can only speculate and that's not good for solving your problem.


I have owned and maintained Silver Shadows for over 10 years now. I find most mechanics and even Rolls Royce mechanics have very little knowledge about these automobiles. I have researched these cars in quite a bit of detail and can pretty much tell you what is wrong, if you can describe the behavior in detail. I have saved quite a few RR owners a lot of money and aggravation due to improper diagnosis. I am the owner of Classy Transportation, LLC a luxury limousine service specializing in antique cars, classic cars, vintage cars and exotic cars.

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