Looking for thoughts on what this might be as I?ve taken it to a
couple different shops and really not gotten any improvement.

The Car:
1997 Neon w/ DOHC and ~90k miles

The Problem:
Car starts really hard on 5-6th time turning over before it goes,
usually with a rough sound and a large smell of exhaust in the car. On
a warm start the car starts fine.

My wife?s uncle works for Chrysler told me that priming the engine
helps. So, for the past year I stick the key in and turn it to check
the gauges and then wait 5-6 sec before trying to start. This seems to
help things, but still not a great start and has seemed to lost its
effect a little.

Attempts to fix:
One place told me it really needed a tune up and decarbonized
(?)--seemed to help at first, but a couple days later was back to
trouble.

At a oil change one guy got curious (I didn?t even tell them about it)
and noticed the fuel filter was in bad shape, so we got that replaced.
It also did seem to help a little, but a few days later as my wife was
driving the car it stalled at a stoplight. Oil and gas leaking all
over the place. After hauling it to a dealer we found out that the cap
to the fuel filter had come off. I got the oil change place to
reimburse me thinking it was there fault, but who knows if it actually
was.

It didn?t start one day in a cold Wisconsin morning after sitting out
for a day or two, so we got AAA to come. He tried an old trick where
you press down the accelerator to the floor before trying to start.

So, all of this has made me think that the problem might be some junk
in the fuel line. I tried two treatments back to back with fuel line
cleaner that you dillute into your gas tank. I didn?t really notice
any effect (good or bad).

The only other engine problems I?ve noticed is some occasional
hesitation on accelerating from a stop (like at a stop light).

I?ve had suggested that it might be a cracked head gasket--but with
only problems with starting that doesn?t seem right. Any thoughts?

Anyway, I?ve thought of (haven?t had checked out yet) bad O2 sensor
and maybe getting the fuel line actually checked over.

ANY THOUGHTS OR IDEA WOULD BE APPRECIATED

Thanks,
Eric