At 09:16 am 3/23/97 -0500, you wrote:
>Less than 1000 mi. after I bought my Mk1A, I had to change the plugs.
>Symptoms leading up to this were chugging, stalling, and eventually no
>start, although the engine would turn over (it just wouldn't engage). I
>don't know how old the plugs were that were in the car when I bought it,
>but looking at them after removal, they didn't show any extremes signs of
>fouling. (The engine had been pretty much totally rebuilt, by the way).
>Then, less than 1000 mi after putting the new plugs in, the same thing
>occured. I went from RF9 to RF18 this time. Things were fine from January
>until now. The same chugging has set in again, with the usual reluctance
>in acceleration. Between the time I bought the car and the present, I've
>only put maybe 2500 mi on it at most. Accompanying the above "symptoms" is
>an uneven idle, or a too fast idle, especially after driving for a while
>and then coming to a stop, and an occasional burst of dark, foul exhaust.
>Sometimes these smelly black clouds occur during idling, but most often if
>you pump the gas pedal while in neutral. My thought at this point is that
>I need a compression check, but even if there are bad rings somewhere, why
>would that effect the plug situation so radically? Any
>opinions/suggestions would be welcome. Thanks. Curt.
>
Curt,
Sounds like three things. 1. Your carb may be too rich. Check for
a bad power valve or main jets that are too big . 2.Your idle ckt may be
mal adjusted ( again too rich) as evidenced by the too fast idle after
driving for a while ( and cleaning the carbon off the plugs. 3. Weak
spark, due to bad plug wires or bad coil ,points, capicator or igition resistor
to high ohm reading. Sounds like you do all your driving in town.
Take it out on the road and blow it out. 65 MPH for a few miles may help.
Jim Barrett Tiger II 351C and others.
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