My 66 misbehaved this way when I had a fried center conductor (contacts
the center of rotor) on the distributor cap, could also be rotor
contacts. Good luck and keep us posted, David Deutsch
You wrote:
I began to hear a backfire from
>my muffler intermittantly. At lower RPMs, the backfiring was not
>occuring, and at high RPMs, the backfiring only occured when the
engine
>had a load(i.e. going up a hill). As I reached Birmingham, a few
hours
>later, the backfiring became worse, and then I could detect that the
>engine was not firing properly. I began to suspect that the spark
plugs
>or wires were not up to par, so I stopped and bought new spark plug
wires.
>
>I installed the new wires, but the problem is not gone. In fact, it
has
>gotten worse. At speeds over 50 MPH the car misfires and backfires
>constantly. My next place to check is the spark plugs. Maybe one is
>fouled. But wouldn't a fouled spark plug affect the engine at any
RPM?
>
>Could my problem be in the distributor, or coil.
>
>By the way, my car is a '78 MGB.
>
>Please give advice, criticism, and feel free to ask me any details.
This
>is the first time I've had any real problems out of this car, and it
came
>at a really inconvenient time(away at school and not at home with the
>tools and carport).
>
>thanks
>jay
>
>
>
> --
>Jurgen Hartwig
>Georgia Institute of Technology, Atlanta Georgia, 30332
>uucp: ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!gt0003a
>Internet: gt0003a@prism.gatech.edu
>
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