Join Date: Feb 2001
Location: Kansas City, MO
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pepping up a 1.6 16-valve...
Practically-speaking, the two best things that you can do for your engine is:
A complete tuneup with factory specified sparkplugs (you might also buy a new set of sparkplug wires...)
A Doug Thorley exhaust manifold and a 2" exhaust system.
I believe that Thorley is the only seller of a 50-state approved 16-valve exhaust manifold although Calmini might have one...
Beyond that, a complete rebuild is the next step. The 16-valve is the best engine to have in a Tracker/Sidekick outside of an engine swap.
If the engine is running pretty badly, examine the accessory pully for any looseness. If there IS looseness you probably have a wallowed crankshaft timing gear keyway - which is screwing up your timing.
This situation usually happens when someone tries to change the timing belt by removing the crankshaft bolt instead of the five smaller accessory pulley bolts in an effort to remove the timing belt cover...
I hope that this helps!
searchable links to Suzuki/Geo modding and maintenence info - including the Tracker FSM Project!
'88 "SJ-416 Samurai"
'11 Ford Transit Connect XLT