My Tristar was running great with a new engine, a strong 2.1 DJ.  Recently it would start perfectly in the morning but during the day, sometimes the engine would turn over but not start.  A few tries at the key and it would start.  Over the last few days it got worse exponentially.  Now it will not start at all.

I think the spark is OK, though it didn't send me across the parking lot when it got me : ), it sure made me throw the wire.

Again the battery and starter are fine, spark seems to be OK.  Could this be a fuel pump or regulator?  Could it be sensors or switches?

Ever had this before?, where do I "start"? (no pun intended).

Kim Springer
'89 Tristar 2WD