1987 Plymouth Horizon

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TROY HUFF
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  • 1 POST
1987 Plymouth Horizon 4 cyl Front Wheel Drive Manual

car backfires and dies after warms up
Aug 25, 2009 at 2:03 PM
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CH112063
  • ✓Experienced Mechanic
  • 1,320 POSTS
Check out the backfires section on this site by clicking How does it work.
The importance of whether it comes through the intake or exhaust is important but the cheapest thing could be it needs a complete tune up because the cap is causing the plugs to spark when they should not. If its running too lean, valve timing, feedback carb. system, bad seating valves, also. a lot of age and mileage opens many possibilities. I hope its just a bad distributor cap. I used to drive that kind of car and 1 year later fuel injection was available and then gone. No more little spacious L body.
Sep 13, 2009 at 1:29 PM
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