[T3] Car Cures Itself
Bobsnotch at aol.com
Bobsnotch at aol.com
Tue Jun 25 19:37:28 PDT 2013
In a message dated 6/25/2013 5:29:30 P.M. Eastern Daylight Time,
j_jonik at yahoo.com writes:
Re; 71 FI Std shift....
Earlier I asked about why the car "cures itself" from
stumbling...stuttering...seeming like maybe only on 3 cylinders, AFTER going about three miles,
or after about five minutes. At that point, it's hard to look for a
problem that's no longer a problem.
On advice, checked that distributor drive was doing it's thing to spring
into position. It did. Made sure all wires were duly tight, double-checked
timing and point gap, and even cleaned up the spark plugs. All was ok
then, for a short while.
But the symptoms are back. This time I got one Little Backfire.
Sometimes on starting, there's a some exhaust smoke. Also...I THINK...not
sure...that the oil level is a bit high...but I can't verify how flat the street
was to have gotten a good reading. If really high, instead of a bit down,
there MAY be, again, a problem with fuel
getting into the oil. How to assure that's not happening?
And, after about ten miles, the oil light flickers a little, and glows.
Idle seems at proper speed. No hints that the car wants to stall....and
after the stumbling stuff goes away (as if it just got a cleared out
something), the car performs perfectly...except for that oil light flicker.
Something's sending warning signals that all is not well.
OK, so you basically did a tune up, and nothing changed. If I had to make
a guess, I'd say you have a leaking injector (1 that's not completely
shutting/closing off). This would give a little back fire when lit off (spark at
the plug, once dry), and would drain past the rings to mix with the oil
(higher oil level). This could also be the "wants to stall", until enough heat
has been developed, and enough cycle times on the injector, that it clears
out again (no running problems).
The oil light can be a worn or tired oil pressure switch, worn bearings
(gas mixing with the oil, reducing the viscosity), or just general age and
wear and tear from use. Yes these engines will last a long time with proper
maintenance, but let them sit for a year (or more), and things start
happening that didn't happen before. I've seen it enough over the last 20+ years
I've owned and driven a type 3 (or type 34). It happens, and there's not a
lot you can do about it. After all, a 71 type 3 IS 30+ years old now. ;-)
Bob 65 Notch S w/Sunroof and IRS aka Krusty
64 T-34 Ghia aka Wolfie
71 Square-vert under construction
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