HI all, I'm trying to help my dad figure out what is wrong with his 83
lesabre with 5.0L (307) engine and quadrajet carb.
It starts and runs fine in neutral and park. It'll idle fine in gear but
when you try to accelerate it starts sputtering. When the engine is cold,
it's hard to get 'er above 35 MPH. We checked the timing because it felt
like a timing issue, and the ignition timing is fine. It got a new timing
chain and gears last fall and had been running fine since then until now.
The exhaust does not smell of fuel so I assume it's not an excess of fuel.
The fuel filter was replaced already today.
We did notice during out 'array' of tests that the choke plate on the two
back carb barrels never open (well, unless you open them by hand).
Thanks for any help you can offer.