4000 CS stumble on way to redline

[Eric Henning]

 I was giving my recently acquired 86 4000CS (2.2 l)an
Italian tune up (wind the pi*s of of the engine to
redline) and right at 5000 rpm (redline is 6500 I
beleive) the engnien starts to stumble terribly. 
Otherwise runs very smoothly.  Has new plugs and
wires, new air filter,  cap and rotor look a little
worn, no idea how old timing belt is (yes, I know I
should replace).  Maybe starved for fuel?  tiimg belt
stretching? Any other ideas?  Engine has 155,000
miles.  Engine compression for all 5 cyclinders is
between 153 and 155psi.

EricH
86 4000CS
Doylestown PA


		
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